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  • 1.
    Arakelian, Erebouni
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Sjuksköterskeutbildningar.
    Torkzad, Michael R.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för radiologi, onkologi och strålningsvetenskap, Enheten för radiologi.
    Bergman, Antonina
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för radiologi, onkologi och strålningsvetenskap, Enheten för radiologi.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Mahteme, Haile
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Kolorektalkirurgi.
    Pulmonary influences on early post-operative recovery in patients after cytoreductive surgery and hyperthermic intraperitoneal chemotherapy treatment: a retrospective study2012Ingår i: World Journal of Surgical Oncology, ISSN 1477-7819, E-ISSN 1477-7819, Vol. 10, s. 258-Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background: The combination of cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) is a curative treatment option for peritoneal carcinomatosis (PC). There have been few studies on the pulmonary adverse events (AEs) affecting patient recovery after this treatment, thus this study investigated these factors. Methods: Between January 2005 and December 2006, clinical data on all pulmonary AEs and the recovery progress were reviewed for 76 patients with after CRS and HIPEC. Patients with pulmonary interventions (thoracocenthesis and chest tubes) were compared with the non-intervention patients. Two senior radiologists, blinded to the post-operative clinical course, separately graded the occurrence of pulmonary AEs. Results: Of the 76 patients, 6 had needed thoracocentesis and another 6 needed chest tubes. There were no differences in post-operative recovery between the intervention and non-intervention groups. The total number of days on mechanical ventilation, the length of stay in the intensive care unit, total length of hospital stay, tumor burden, and an American Society of Anesthesiologists (ASA) grade of greater than 2 were correlated with the occurrence of atelectasis and pleural effusion. Extensive atelectasis (grade 3 or higher) was seen in six patients, major pleural effusion (grade 3) in seven patients, and signs of heart failure (grade 1-2) in nine patients. Conclusions: Clinical and radiological post-operative pulmonary AEs are common after CRS and HIPEC. However, most of the pulmonary AEs did not affect post-operative recovery.

  • 2.
    Basu, Samar
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för folkhälso- och vårdvetenskap.
    Nozari, A.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper.
    Liu, X. L.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Wiklund, Lars
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Development of a novel biomarker of free radical damage in reperfusion injury after cardiac arrest2000Ingår i: FEBS Letters, ISSN 0014-5793, E-ISSN 1873-3468, Vol. 470, nr 1, s. 1-6Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In a porcine model of cardiopulmonary resuscitation (CPR), we investigated changes in the plasma levels of 8-iso-PGF(2alpha), a marker for oxidative injury, and 15-keto-dihydro-PGF(2alpha), an inflammatory response indicator during the post-resuscitation period after cardiac arrest. Twelve piglets were subjected to either 2 or 5 min (VF2 and VF5 group) of ventricular fibrillation (VF) followed by 5 min of closed-chest CPR. Six piglets without cardiac arrest were used as controls. In VF5 group, 8-iso-PGF(2alpha) in the jugular bulb plasma (draining the brain) increased four-fold. Jugular bulb 8-iso-PGF(2alpha) in the control group remained unchanged. The 15-keto-dihydro-PGF(2alpha) also increased four-fold in the VF5 group. Thus, 8-iso-PGF(2alpha) and 15-keto-dihydro-PGF(2alpha) measurements in jugular bulb plasma may be used as biomarkers for quantification of free radical catalyzed oxidative brain injury and inflammatory response in reperfusion injury

  • 3. Bullock, A
    et al.
    Wilde, J D
    Bion, J F
    Clutton-Brock, T
    Flaatten, H
    Mathy, B
    van Mook, W
    Schuwirth, L
    Marsh, B
    Phelan, D
    Shippey, B
    Nimmo, G
    Castel, S
    Hillion, Y
    Bonnet, J
    Chaumont, D
    Rothen, H U
    Reay, H
    Krenn, C
    Germann, P
    Ferdinande, P
    de Backer, D
    Smilov, I
    Keremidchieva, N
    Gasparoviae, V
    Radonic, R
    Kyprianou, T
    Kakas, M
    Sramek, V
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    m.fl., (et al)
    International standards for programmes of training in intensive care medicine in Europe2011Ingår i: Intensive Care Medicine, ISSN 0342-4642, E-ISSN 1432-1238, Vol. 37, nr 3, s. 385-393Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    PURPOSE:

    To develop internationally harmonised standards for programmes of training in intensive care medicine (ICM).

    METHODS:

    Standards were developed by using consensus techniques. A nine-member nominal group of European intensive care experts developed a preliminary set of standards. These were revised and refined through a modified Delphi process involving 28 European national coordinators representing national training organisations using a combination of moderated discussion meetings, email, and a Web-based tool for determining the level of agreement with each proposed standard, and whether the standard could be achieved in the respondent's country.

    RESULTS:

    The nominal group developed an initial set of 52 possible standards which underwent four iterations to achieve maximal consensus. All national coordinators approved a final set of 29 standards in four domains: training centres, training programmes, selection of trainees, and trainers' profiles. Only three standards were considered immediately achievable by all countries, demonstrating a willingness to aspire to quality rather than merely setting a minimum level. Nine proposed standards which did not achieve full consensus were identified as potential candidates for future review.

    CONCLUSIONS:

    This preliminary set of clearly defined and agreed standards provides a transparent framework for assuring the quality of training programmes, and a foundation for international harmonisation and quality improvement of training in ICM.

  • 4.
    Carlsson, Markus
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Infektionssjukdomar.
    Lipcsey, Miklós
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Larsson, Anders
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk kemi.
    Tano, Eva
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Klinisk bakteriologi.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Eriksson, Mats
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Sjölin, Jan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Infektionssjukdomar.
    Inflammatory and circulatory effects of the reduction of endotoxin concentration in established porcine endotoxemic shock: a model of endotoxin elimination2009Ingår i: Critical Care Medicine, ISSN 0090-3493, E-ISSN 1530-0293, Vol. 37, nr 3, s. 1031-e4Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Objective:

    To study whether a reduction of the endotoxin load, once a generalized inflammatory state has been established, reduces the inflammatory response and endotoxin-induced effects on circulation, hypoperfusion, and organ dysfunction.

    Design:

    Prospective parallel-grouped placebo-controlled randomized interventional experimental study.

    Setting:

    University research unit.

    Subjects:

    Healthy pigs.

    Interventions:

    The animals were subjected to a continuous endotoxin infusion rate of either 4.0 or 0.063 µg endotoxin × kg-1 × h-1 for 1, 2, or 6 hours. The 1- and 2-hour infusion groups represented the applied therapy by a reduction of the endotoxin load of 5/6 and 2/3, respectively.

    Measurements and Main Results:

    During a 6-hour experiment, laboratory and physiologic parameters were recorded hourly in 26 anesthetized and mechanically ventilated pigs. Primary end point was to detect differences in tumor necrosis factor-[alpha] (TNF-[alpha]) concentration during the last 3 hours of the experiment. Despite the early reduction of the endotoxin load, no effect on TNF-[alpha] concentration was observed. Similarly, in circulatory parameters, such as mean arterial pressure and oxygen delivery, and in platelet count and renal function, no effects were noted. However, there was some improvement in pulmonary compliance and function as determined by Pao2, Paco2, and pH. These changes were associated with slight improvements in leukocyte response and capillary leakage.

    Conclusions:

    Termination of the endotoxin infusion represents an incontestable model of endotoxin concentration reduction. Endotoxin elimination strategies applied at the TNF-[alpha] peak or later will have very little or no effect on TNF-[alpha]–mediated toxicity. Nevertheless, there was an effect on the leukocyte response that was associated with an improvement in respiratory function and microcirculation, making it impossible to rule out fully the beneficial effect of this strategy. However, the effects were limited in relation to the magnitude of the endotoxin concentration reduction and the very early application of the antiendotoxin measure.

  • 5. Castrén, Maaret
    et al.
    Silfvast, T.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Niskanen, M.
    Valsson, F.
    Wanscher, M.
    Sunde, K.
    Scandinavian clinical practice guidelines for therapeutic hypothermia and post-resuscitation care after cardiac arrest2009Ingår i: Acta Anaesthesiologica Scandinavica, ISSN 0001-5172, E-ISSN 1399-6576, Vol. 53, nr 3, s. 280-8Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    BACKGROUND AND AIM: Sudden cardiac arrest survivors suffer from ischaemic brain injury that may lead to poor neurological outcome and death. The reperfusion injury that occurs is associated with damaging biochemical reactions, which are suppressed by mild therapeutic hypothermia (MTH). In several studies MTH has been proven to be safe, with few complications and improved survival, and is recommended by the International Liaison of Committee on Resuscitation. The aim of this paper is to recommend clinical practice guidelines for MTH treatment after cardiac arrest from the Scandinavian Society of Anaesthesiology and Intensive Care Medicine (SSAI). METHODS: Relevant studies were identified after two consensus meetings of the SSAI Task Force on Therapeutic Hypothermia (SSAITFTH) and via literature search of the Cochrane Central Register of Controlled Trials and Medline. Evidence was assessed and consensus opinion was used when high-grade evidence (Grade of Recommendation, GOR) was unavailable. A management strategy was developed as a consensus from the evidence and the protocols in the participating countries. RESULTS AND CONCLUSION: Although proven beneficial only for patients with initial ventricular fibrillation (GOR A), the SSAITFTH also recommend MTH after restored spontaneous circulation, if active treatment is chosen, in patients with initial pulseless electrical activity and asystole (GOR D). Normal ethical considerations, premorbid status, total anoxia time and general condition should decide whether active treatment is required or not. MTH should be part of a standardized treatment protocol, and initiated as early as possible after indication and treatment have been decided (GOR E). There is insufficient evidence to make definitive recommendations among techniques to induce MTH, and we do not know the optimal target temperature, duration of cooling and rewarming time. New studies are needed to address the question as to how MTH affects, for example, prognostic factors.

  • 6.
    Covaciu, Lucian
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Allers, M.
    Enblad, Per
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för neurovetenskap, Neurokirurgi.
    Lunderquist, A.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Wieloch, T.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Intranasal selective brain cooling in pigs2008Ingår i: Resuscitation, ISSN 0300-9572, E-ISSN 1873-1570, Vol. 78, nr 1, s. 83-88Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    BACKGROUND: Special clinical situations where general hypothermia cannot be recommended but can be a useful treatment demand a new approach, selective brain cooling. The purpose of this study was to selectively cool the brain with cold saline circulating in balloon catheters introduced into the nasal cavity in pigs. MATERIAL AND METHODS: Twelve anaesthetised pigs were subjected to selective cerebral cooling for a period of 6 h. Cerebral temperature was lowered by means of bilaterally introduced nasal balloon catheters perfused with saline cooled by a heat exchanger to 8-10 degrees C. Brain temperature was measured in both cerebral hemispheres. Body temperature was measured in rectum, oesophagus and the right atrium. The pigs were normoventilated and haemodynamic variables were measured continuously. Acid-base and electrolyte status was measured hourly. RESULTS: Cerebral hypothermia was induced rapidly and within the first 20 min of cooling cerebral temperature was lowered from 38.1+/-0.6 degrees C by a mean of 2.8+/-0.6 to 35.3+/-0.6 degrees C. Cooling was maintained for 6 h and the final brain temperature was 34.7+/-0.9 degrees C. Concomitantly, the body temperature, as reflected by oesophageal temperature was decreased from 38.3+/-0.5 to 36.6+/-0.9 degrees C. No circulatory or metabolic disturbances were noted. CONCLUSIONS: Inducing selective brain hypothermia with cold saline via nasal balloon catheters can effectively be accomplished in pigs, with no major disturbances in systemic circulation or physiological variables. The temperature gradients between brain and body can be maintained for at least 6 h.

  • 7.
    Covaciu, Lucian
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Allers, M.
    Lunderquist, A.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Intranasal cooling with or without intravenous cold fluids during and after cardiac arrest in pigs2010Ingår i: Acta Anaesthesiologica Scandinavica, ISSN 0001-5172, E-ISSN 1399-6576, Vol. 54, nr 4, s. 494-501Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background: Intranasal balloon catheters circulated with cold saline have previously been used for the induction and maintenance of selective brain cooling in pigs with normal circulation. In the present study, we investigated the feasibility of therapeutic hypothermia initiation, maintenance and rewarming using such intranasal balloon catheters with or without addition of intravenous ice-cold fluids during and after cardiac arrest treatment in pigs. Material and methods: Cardiac arrest was induced in 20 anaesthetised pigs. Following 8 min of cardiac arrest and 1 min of cardiopulmonary resuscitation (CPR), cooling was initiated after randomisation with either intranasal cooling (N) or combined with intravenous ice-cold fluids (N+S). Hypothermia was maintained for 180 min, followed by 180 min of rewarming. Brain and oesophageal temperatures, haemodynamic variables and intracranial pressure (ICP) were recorded. Results: Brain temperatures reductions after cooling did not differ (3.8 +/- 0.7 degrees C in the N group and 4.3 +/- 1.5 degrees C in the N+S group; P=0.47). The corresponding body temperature reductions were 3.6 +/- 1.2 degrees C and 4.6 +/- 1.5 degrees C (P=0.1). The resuscitation outcome was similar in both groups. Mixed venous oxygen saturation was lower in the N group after cooling and rewarming (P=0.024 and 0.002, respectively) as compared with the N+S group. ICP was higher after rewarming in the N group (25.2 +/- 2.9 mmHg; P=0.01) than in the N+S group (15.7 +/- 3.3 mmHg). Conclusions: Intranasal balloon catheters can be used for therapeutic hypothermia initiation, maintenance and rewarming during CPR and after successful resuscitation in pigs.

  • 8.
    Covaciu, Lucian
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Ortiz-Nieto, Francisco
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för radiologi.
    Ahlström, Håkan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för radiologi.
    Weis, Jan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för radiologi.
    Human brain MR spectroscopy thermometry using metabolite aqueous-solution calibrations2010Ingår i: Journal of Magnetic Resonance Imaging, ISSN 1053-1807, E-ISSN 1522-2586, Vol. 31, nr 4, s. 807-814Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    PURPOSE: To estimate absolute brain temperature using proton MR spectroscopy ((1)H-MRS) and mean brain-body temperature difference of healthy human volunteers. MATERIALS AND METHODS: Chemical shift difference between temperature-dependent water spectral line position and temperature-stable metabolite spectral reference was used for the estimations of absolute brain temperature. Temperature calibrations constants were obtained from the spectra of the N-acetyl aspartate (NAA line at approximately 2.0 ppm), glycero-phosphocholine (GPC line at approximately 3.2 ppm), and creatine (Cr line at approximately 3.0 ppm) aqueous solutions with pH values within physiologically pertinent ranges. Single-voxel PRESS sequence (TR/TE 2000/80 ms) was used for this purpose. Brain temperature was determined by averaging the temperatures computed from water-Cho, water-Cr, and water-NAA chemical shift differences. RESULTS: The mean brain temperature of 18 healthy volunteers was 38.1 +/- 0.4 degrees C and mean brain-body (rectal) temperature difference was 1.3 +/- 0.4 degrees C. CONCLUSION: Improved accuracy of the temperature constants and averaging the temperatures computed from water-Cho, water-Cr, and water-NAA chemical shift differences increased the reliability of the brain temperature estimations.

  • 9.
    Covaciu, Lucian
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Weis, Jan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för radiologi, onkologi och strålningsvetenskap, Enheten för radiologi.
    Bengtsson, Caroline
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Öron-, näs- och halssjukdomar.
    Allers, M
    Lunderquist, A
    Ahlström, Håkan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för radiologi, onkologi och strålningsvetenskap, Enheten för radiologi.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Brain temperature in volunteers subjected to intranasal cooling2011Ingår i: Intensive Care Medicine, ISSN 0342-4642, E-ISSN 1432-1238, Vol. 37, nr 8, s. 1277-1284Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Intranasal cooling can be used to initiate therapeutic hypothermia. However, direct measurement of brain temperature is difficult and the intra-cerebral distribution of temperature changes with cooling is unknown. The purpose of this study was to measure the brain temperature of human volunteers subjected to intranasal cooling using non-invasive magnetic resonance (MR) methods. Intranasal balloons catheters circulated with saline at 20A degrees C were applied for 60 min in ten awake volunteers. No sedation was used. Brain temperature changes were measured and mapped using MR spectroscopic imaging (MRSI) and phase-mapping techniques. Heart rate and blood pressure were monitored throughout the experiment. Rectal temperature was measured before and after the cooling. Mini Mental State Examination (MMSE) test and nasal inspection were done before and after the cooling. Questionnaires about the subjects' personal experience were completed after the experiment. Brain temperature decrease measured by MRSI was -1.7 +/- A 0.8A degrees C and by phase-mapping -1.8 +/- A 0.9A degrees C (n = 9) at the end of cooling. Spatial distribution of temperature changes was relatively uniform. Rectal temperature decreased by -0.5 +/- A 0.3A degrees C (n = 5). The physiological parameters were stable and no shivering was reported. The volunteers remained alert during cooling and no cognitive dysfunctions were apparent in the MMSE test. Postcooling nasal examination detected increased nasal secretion in nine of the ten volunteers. Volunteers' acceptance of the method was good. Both MR techniques revealed brain temperature reductions after 60 min of intranasal cooling with balloons circulated with saline at 20A degrees C in awake, unsedated volunteers.

  • 10.
    Covaciu, Lucian
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Weis, Jan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för radiologi.
    Bengtsson, Caroline
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Öron-, näs- och halssjukdomar.
    Allers, Mats
    Division of thoracic sciences, Department of clinical sciences, Lund University.
    Lunderquist, Anders
    Department of radiology, Lund University.
    Ahlström, Håkan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för onkologi, radiologi och klinisk immunologi, Enheten för radiologi.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Brain temperature in healthy volunteers subjected to intranasal cooling2011Ingår i: Intensive Care Medicine, ISSN 0342-4642, E-ISSN 1432-1238, Vol. 37, nr 8, s. 1277-1284Artikel i tidskrift (Övrigt vetenskapligt)
    Abstract [en]

    Purpose:

    Intranasal cooling can be used to initiate therapeutic hypothermia. However, direct measurement of brain temperature is difficult and the intra-cerebral distribution of temperature changes with cooling is unknown. The purpose of this study was to measure the brain temperature of human volunteers subjected to intranasal cooling using non-invasive magnetic resonance (MR) methods.

    Methods:

    Intranasal balloons catheters circulated with saline at 20 °C were applied for 60 min in 10 healthy, unsedated volunteers. Brain temperature changes were measured and mapped using MR spectroscopic imaging (MRSI) and phase-mapping techniques. Heart rate and blood pressure were monitored throughout the experiment. Rectal temperature was measured before and after the cooling. Mini Mental State Examination (MMSE) test and nasal inspection were done before and after the cooling. Questionnaires about the subjects personal experience were filled after the experiment.

    Results:

    Brain temperature decrease measured by MRSI was -1.7 ± 0.8°C and by phase-mapping -1.8 ± 0.9°C at the end of cooling. Spatial distribution of temperature changes was relatively uniform. Rectal temperature decreased by -0.5 ± 0.3°C. The physiological parameters were stable and no shivering was reported. The volunteers remained alert during cooling and no cognitive dysfunctions were apparent at MMSE test. Postcooling nasal examination detected increased nasal secretion in 9 of the 10 volunteers. Volunteer’s acceptance of the method was good.   

    Conclusion:

    Both MR techniques revealed brain temperature reductions after 60 min intranasal cooling with balloons circulated with saline at 20 °C in healthy and unsedated volunteers.

  • 11. Cronberg, T.
    et al.
    Brizzi, M.
    Liedholm, L. J.
    Rosén, I.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Rylander, C.
    Friberg, H.
    Nya riktlinjer för neurologisk bedömning av prognos efter hjärtstopp: Hypotermibehandling ändrar förutsättningarna - HLR-rådet har uppdaterat2012Ingår i: Läkartidningen, ISSN 0023-7205, E-ISSN 1652-7518, Vol. 109, nr 41, s. 1-5Artikel, forskningsöversikt (Refereegranskat)
  • 12. Cronberg, T.
    et al.
    Brizzi, M.
    Liedholm, L. J.
    Rosén, I.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Rylander, C.
    Friberg, H.
    Nytt stöd för bedömning av neurologisk prognos efter hjärtstopp2012Ingår i: Läkartidningen, ISSN 0023-7205, E-ISSN 1652-7518, Vol. 109, nr 47, s. 2146-2150Artikel i tidskrift (Refereegranskat)
  • 13. Cronberg, Tobias
    et al.
    Brizzi, Marco
    Liedholm, Lars Johan
    Rosén, Ingmar
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Rylander, Christian
    Friberg, Hans
    Neurological prognostication after cardiac arrest: Recommendations from the Swedish Resuscitation Council2013Ingår i: Resuscitation, ISSN 0300-9572, E-ISSN 1873-1570, Vol. 84, nr 7, s. 867-872Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Cardiopulmonary resuscitation is started in 5000 victims of out-of-hospital cardiac arrest in Sweden each year and the survival rate is approximately 10%. The subsequent development of a global ischaemic brain injury is the major determinant of the neurological prognosis for those patients who reach the hospital alive. Induced hypothermia is a recommended treatment after cardiac arrest and has been implemented in most Swedish hospitals.

    Recent studies indicate that induced hypothermia may affect neurological prognostication and previous international recommendations are therefore no longer valid when hypothermia is applied. An expert group from the Swedish Resuscitation Council has reviewed the literature and made recommendations taking into account the effects of induced hypothermia and concomitant sedation.

    A delayed neurological evaluation at 72h after rewarming is recommended for hypothermia treated patients. This evaluation should be based on several independent methods and the possibility of lingering pharmacological effects should be considered.

  • 14. Cronberg, Tobias
    et al.
    Brizzi, Marco
    Liedholm, Lars Johan
    Rosén, Ingmar
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Rylander, Christian
    Friberg, Hans
    Nytt stöd för bedömning av neurologisk prognos efter hjärtstopp: Rekommendationer från svenska HLR-rådets expertgrupp2012Ingår i: Läkartidningen, ISSN 0023-7205, E-ISSN 1652-7518, Vol. 109, nr 47, s. 2146-2150Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Cardiopulmonary resuscitation is started in 4000 victims of out-of-hospital cardiac arrest in Sweden each year and the survival rate is approximately 10%. The subsequent development of a global ischemic brain injury is the major determinant of the neurological prognosis for those patients who reach the hospital alive. Induced hypothermia is a recommended treatment after cardiac arrest and has been implemented in most Swedish centres. Recent studies indicate that induced hypothermia may affect several methods for neurological prognostication and previous international recommendations are therefore no longer valid when hypothermia is applied. An expert group from the Swedish Resuscitation Council has reviewed the literature and made recommendations taking into account the effects of induced hypothermia and concomitant sedation. A delayed neurological evaluation at 72 hours after rewarming is recommended for hypothermia treated patients. This evaluation should be based on several independent methods and the possibility of lingering pharmacological effects should be considered.

  • 15. Dankiewicz, Josef
    et al.
    Schmidbauer, Simon
    Nielsen, Niklas
    Kern, Karl B.
    Mooney, Michael R.
    Stammet, Pascal
    Riker, Richard R.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Seder, David
    Smid, Ondrej
    Sunde, Kjetil
    Soreide, Eldar
    Unger, Barbara T.
    Friberg, Hans
    Safety, Feasibility, and Outcomes of Induced Hypothermia Therapy Following In-Hospital Cardiac Arrest-Evaluation of a Large Prospective Registry2014Ingår i: Critical Care Medicine, ISSN 0090-3493, E-ISSN 1530-0293, Vol. 42, nr 12, s. 2537-2545Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Objectives: Despite a lack of randomized trials, practice guidelines recommend that mild induced hypothermia be considered for comatose survivors of in-hospital cardiac arrest. This study describes the safety, feasibility, and outcomes of mild induced hypothermia treatment following in-hospital cardiac arrest. Design: Prospective, observational, registry-based study. Setting: Forty-six critical care facilities in eight countries in Europe and the United States reporting in the Hypothermia Network Registry and the International Cardiac Arrest Registry. Patients: A total of 663 patients with in-hospital cardiac arrest and treated with mild induced hypothermia were included between January 2004 and February 2012. Interventions: None. Measurements and Main Results: A cerebral performance category of 1 or 2 was considered a good outcome. At hospital discharge 41% of patients had a good outcome. At median 6-month follow-up, 34% had a good outcome. Among in-hospital deaths, 52% were of cardiac causes and 44% of cerebral cause. A higher initial body temperature was associated with reduced odds of a good outcome (odds ratio, 0.79; 95% CI, 0.68-0.92). Adverse events were common; bleeding requiring transfusion (odds ratio, 0.56; 95% CI, 0.31-1.00) and sepsis (odds ratio, 0.52; 95% CI, 0.30-0.91) were associated with reduced odds for a good outcome. Conclusions: In this registry study of an in-hospital cardiac arrest population treated with mild induced hypothermia, we found a 41% good outcome at hospital discharge and 34% at follow-up. Infectious complications occurred in 43% of cases, and 11% of patients required a transfusion for bleeding. The majority of deaths were of cardiac origin.

  • 16. Eiriksson, K.
    et al.
    Fors, Diddi
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Arvidsson, Dag
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Gastrointestinalkirurgi.
    High intra-abdominal pressure during experimental laparoscopic liver resection reduces bleeding but increases the risk of gas embolism2011Ingår i: British Journal of Surgery, ISSN 0007-1323, E-ISSN 1365-2168, Vol. 98, nr 6, s. 845-852Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background: Various recommendations exist regarding intra-abdominal pressure (IAP) during laparoscopic liver resection. A high IAP may reduce bleeding but at the same time increase the risk of gas embolism. This study investigated the effects of two different IAPs during laparoscopic left liver lobe resection in piglets. Methods: Sixteen piglets underwent laparoscopic left liver lobe resection using carbon dioxide pneumoperitoneum of either 8 or 16 mmHg (8 per group). A combination of CUSA System 200 (TM) and LigaSure (TM) instruments was used for parenchymal division. During resection, a standard injury to the left liver vein was also created to increase the risk of bleeding and/or gas embolism during the operation. Heart rate, cardiac output, and arterial, pulmonary arterial, pulmonary capillary wedge and central venous pressures were measured. Arterial blood gases were monitored continuously. Transoesophageal echocardiography was video recorded to detect and quantify gas embolism within the right cardiac ventricle. The duration of operation and bleeding were noted. Results: High IAP resulted in reduced bleeding (P = 0.016), but gas embolism occurred more frequently (P = 0.001) than with low IAP. Gas embolism disturbed gas exchange, with an increase in arterial pressure of carbon dioxide, and a decrease in arterial partial pressure of oxygen and pH. These effects were sustained for at least 30 min after surgery. Conclusion: High IAP reduces the amount of bleeding but increases the risk of gas embolism. Monitoring for gas embolism is therefore indicated if a high IAP is used during laparoscopic liver resection.

  • 17.
    Eiriksson, Kristinn
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper.
    Fors, Diddi
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Arvidsson, Dag
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Gastrointestinalkirurgi.
    Is there a difference between carbon dioxide and argon gas embolisms in laparoscopic liver resection?2012Artikel i tidskrift (Övrigt vetenskapligt)
    Abstract [en]

    Background:

    Several methods are available to control bleeding during laparoscopic liver resection (LLR).  One of these techniques, argon enhanced coagulation (AEC), could be hazardous because of the argon gas.  Argon gas has poorer solubility in blood than CO2.  Previous animal studies have shown the danger of gas embolism during LLR.  The aim of this study was to compare the effects of Argon gas embolism and CO2 embolism, with special emphasis on pulmonary circulation and gas exchange, during laparoscopic liver surgery.

    Method:

    Sixteen piglets underwent laparoscopic left lateral liver resection and were randomised to either CO2 or argon pneumoperitoneum, at 16 mmHg.  The pulmonary circulation of the animals was monitored with a pulmonary arterial catheter.  Paratrend® was used to continuously measure PaCO2, PaO2, and pH, and transoesophageal ultrasound was used to detect embolisms on the right side of the heart.

    Results:

    Equal amount of embolism were seen in both groups.  The mean pulmonary arterial pressure (MPAP) increased in the Argon-group (P=0.050) as did the pulmonary vascular resistance (PVR) (P=0.015) compared with the CO2-group, correlating with the amount of embolism.  The gas exchange was then affected with an decrease in PaO2 and increase in PaCO2 , resulting  in acidosis.

    Conclusion:

    Argon gas embolism has more effects on pulmonary circulation and gas exchange than CO2.  If used, great care should be taken with argon gas and the patient should be carefully monitored during LLR.

  • 18. Eiriksson, Kristinn
    et al.
    Fors, Diddi
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Arvidsson, Dag
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Gastrointestinalkirurgi.
    Laparoscopic left lobe liver resection in a porcine model: a study of the efficacy and safety of different surgical techniques2009Ingår i: Surgical Endoscopy, ISSN 0930-2794, E-ISSN 1432-2218, Vol. 23, nr 5, s. 1038-1042Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    INTRODUCTION: Laparoscopic liver surgery is evolving and the best technique for dividing the liver parenchyma is currently under debate. The aim of this study was to study different techniques during a full laparoscopic lobe resection, and determine the efficacy and risks of bleeding and gas embolism. METHODS: Sixteen pigs were randomized to two groups: group US underwent an operation with Ultracision shears (AutoSonix) and ultrasonic dissector (CUSA) and group VS with a vessel sealing system (Ligasure) and ultrasonic dissector. A left lobe resection was performed. Transesophageal endoscopic echocardiography (TEE) was used to detect gas emboli in the right side of the heart and pulmonary artery. The operations and TEE were recorded for later assessment. RESULTS: Compared with group VS, group US exhibited significantly more intraoperative bleeding (p = 0.02), a trend towards a longer operation time (p = 0.08), and a trend towards more embolization for grade I emboli. In total, 10 of 15 animals had emboli during the operation. CONCLUSIONS: This study showed that a laparoscopic left lobe resection can be performed with a combination of AutoSonix and CUSA as well as with Ligasure and CUSA instrumentation. In our hands, less bleeding was incurred with Ligasure than with AutoSonix.

  • 19.
    Eiriksson, Kristinn
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Fors, Diddi
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Waage, Anne
    University of Oslo, Norway.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Arvidsson, Dag
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Gastrointestinalkirurgi.
    Faster and safer resection with a stapler device: randomised, controlled trial of laparoscopic liver resection in a porcine modelArtikel i tidskrift (Övrigt vetenskapligt)
    Abstract [en]

    Introduction. Many surgeons use stapling during liver resection. The stapler has the potential to close all luminal structures in the liver tissue and thus result in minimal bleeding, reduced danger of gas embolism, and a faster surgery.

    Material. Sixteen piglets where randomised into two groups receiving either laparoscopic liver resection with a vessel sealing system and an ultrasonic dissector (group-L) or with stapling (group-S). Pneumoperitoneum at 16 mmHg pressure was used. Gas embolism was detected with transesophageal ultrasound and intra-operative bleeding estimated. Monitoring of gas exchange with continuous recording of PaCO2, PaO2, end-tidal CO2, and pH was used. Invasive monitoring of systemic and pulmonary circulation was performed.

    Results. Stapling resulted in less bleeding (P = 0.026), less gas embolism (P = 0.001), and a shorter operating time (P = 0.004).

    Conclusion. In this animal model, stapling of the liver parenchyma led to a faster and safer resection compared to the use of a vessel sealing system and an ultrasonic dissector.

  • 20.
    Elfwen, Ludvig
    et al.
    Karolinska Inst, Soder Sjukhuset, Dept Clin Sci & Educ, Solna, Sweden.
    Lagedal, Rickard
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    James, Stefan K
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Kardiologi. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, Uppsala kliniska forskningscentrum (UCR).
    Jonsson, Martin
    Karolinska Inst, Ctr Resuscitat Sci, Dept Med, Solna, Sweden.
    Jensen, Ulf
    Karolinska Inst, Soder Sjukhuset, Dept Clin Sci & Educ, Solna, Sweden.
    Ringh, Mattias
    Karolinska Inst, Ctr Resuscitat Sci, Dept Med, Solna, Sweden.
    Claesson, Andreas
    Karolinska Inst, Ctr Resuscitat Sci, Dept Med, Solna, Sweden.
    Oldgren, Jonas
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Kardiologi. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, Uppsala kliniska forskningscentrum (UCR).
    Herlitz, Johan
    Univ Boras, Ctr Prehosp Res Western Sweden, Boras, Sweden;Univ Boras, Sch Hlth Sci, Boras, Sweden;Sahlgrens Univ Hosp, Gothenburg, Sweden.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Nordberg, Per
    Karolinska Inst, Ctr Resuscitat Sci, Dept Med, Solna, Sweden.
    Coronary angiography in out-of-hospital cardiac arrest without ST elevation on ECG-Short- and long-term survival2018Ingår i: American Heart Journal, ISSN 0002-8703, E-ISSN 1097-6744, Vol. 200, s. 90-95Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background: The potential benefit of early coronary angiography in out-of-hospital cardiac arrest (OHCA) patients without ST elevation on ECG is unclear. The aim of this study was to evaluate the association between early coronary angiography and survival in these patients.

    Methods: Nationwide observational study between 2008 and 2013. Included were patients admitted to hospital after witnessed OHCA, with shockable rhythm, age 18 to 80 years and unconscious. Patients with ST-elevation on ECG were excluded. Patients that underwent early CAG (within 24 hours) were compared with no early CAG (later during the hospital stay or not at all). Outcomes were survival at 30 days, 1 year, and 3 years. Multivariate analysis included pre-hospital factors, comorbidity and ECG-findings.

    Results: In total, 799 OHCA patients fulfilled the inclusion criteria, of which 275 (34%) received early CAG versus 524 (66%) with no early CAG. In the early CAG group, the proportion of patients with an occluded coronary artery was 27% and 70% had at least one significant coronary stenosis (defined as narrowing of coronary lumen diameter of >= 50%). The 30-day survival rate was 65% in early CAG group versus 52% with no early CAG (P < .001). The adjusted OR was 1.42 (95% CI 1.00-2.02). The one-year survival rate was 62% in the early CAG group versus 48% in the no early CAG group with the adjusted hazard ratio of 1.35 (95% CI 1.04-1.77).

    Conclusion: In this population of bystander-witnessed cases of out-of-hospital cardiac arrest with shockable rhythm and ECG without ST elevation, early coronary angiography may be associated with improved short and long term survival.

  • 21.
    Elfwen, Ludvig
    et al.
    Karolinska Inst, Soder Sjukhuset, Dept Clin Sci & Educ, Stockholm, Sweden.
    Lagedal, Rickard
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Nordberg, Per
    Karolinska Inst, Ctr Resuscitat Sci, Dept Med, Solna, Sweden.
    James, Stefan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Kardiologi. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, Uppsala kliniska forskningscentrum (UCR).
    Oldgren, Jonas
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Kardiologi. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, Uppsala kliniska forskningscentrum (UCR).
    Bohm, Felix
    Karolinska Inst, Karolinska Univ Hosp, Dept Med, Div Cardiol, Stockholm, Sweden.
    Lundgren, Peter
    Univ Gothenburg, Sahlgrenska Acad, Inst Med, Dept Mol & Clin Med, Gothenburg, Sweden;Univ Boras, Prehospen Ctr Prehosp Res, Boras, Sweden.
    Rylander, Christian
    Univ Gothenburg, Sahlgrenska Acad, Inst Clin Sci, Dept Anaesthesiol & Intens Care Med, Gothenburg, Sweden.
    van der Linden, Jan
    Karolinska Inst, Dept Mol Med & Surg, Stockholm, Sweden.
    Hollenberg, Jacob
    Karolinska Inst, Ctr Resuscitat Sci, Dept Med, Solna, Sweden.
    Erlinge, David
    Lund Univ, Clin Sci, Dept Cardiol, Lund, Sweden.
    Cronberg, Tobias
    Lund Univ, Skane Univ Hosp, Dept Clin Sci, Div Neurol, Lund, Sweden.
    Jensen, Ulf
    Karolinska Inst, Soder Sjukhuset, Dept Clin Sci & Educ, Stockholm, Sweden.
    Friberg, Hans
    Lund Univ, Skane Univ Hosp, Dept Anesthesiol & Intens Care Med, Lund, Sweden.
    Lilja, Gisela
    Lund Univ, Skane Univ Hosp, Dept Clin Sci, Div Neurol, Lund, Sweden.
    Larsson, Ing-Marie
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Wallin, Ewa
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Svensson, Leif
    Karolinska Inst, Ctr Resuscitat Sci, Dept Med, Solna, Sweden.
    Direct or subacute coronary angiography in out-of-hospital cardiac arrest (DISCO)-An initial pilot-study of a randomized clinical trial2019Ingår i: Resuscitation, ISSN 0300-9572, E-ISSN 1873-1570, Vol. 139, s. 253-261Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background: The clinical importance of immediate coronary angiography, with potentially subsequent percutaneous coronary intervention (PCI), in out-of-hospital cardiac arrest (OHCA) patients without ST-elevation on the ECG is unclear. In this study, we assessed feasibility and safety aspects of performing immediate coronary angiography in a pre-specified pilot phase of the 'DIrect or Subacute Coronary angiography in Out-of-hospital cardiac arrest' (DISCO) randomized controlled trial (ClinicalTrials.gov ID: NCT02309151). Methods: Resuscitated bystander witnessed OHCA patients > 18 years without ST-elevation on the ECG were randomized to immediate coronary angiography versus standard of care. Event times, procedure related adverse events and safety variables within 7 days were recorded. Results: In total, 79 patients were randomized to immediate angiography (n = 39) or standard of care (n = 40). No major differences in baseline characteristics between the groups were found. There were no differences in the proportion of bleedings and renal failure. Three patients randomized to immediate angiography and six patients randomized to standard care died within 24 h. The median time from EMS arrival to coronary angiography was 135 min in the immediate angiography group. In patients randomized to immediate angiography a culprit lesion was found in 14/38 (36.8%) and PCI was performed in all these patients. In 6/40 (15%) patients randomized to standard of care, coronary angiography was performed before the stipulated 3 days. Conclusion: In this out-of-hospital cardiac arrest population without ST-elevation, randomization to a strategy to perform immediate coronary angiography was feasible although the time window of 120 min from EMS arrival at the scene of the arrest to start of coronary angiography was not achieved. No significant safety issues were reported.

  • 22. Engdahl, Johan
    et al.
    Hollenberg, Jacob
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Holmgren, Christina
    Rosenqvist, Mårten
    [In Process Citation].2015Ingår i: Läkartidningen, ISSN 0023-7205, E-ISSN 1652-7518, Vol. 112Artikel i tidskrift (Refereegranskat)
  • 23. Esibov, Alexander
    et al.
    Banville, Isabelle
    Chapman, Fred W.
    Boomars, Rene
    Box, Martyn
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Mechanical chest compressions improved aspects of CPR in the LINC trial2015Ingår i: Resuscitation, ISSN 0300-9572, E-ISSN 1873-1570, Vol. 91, s. 116-121Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Aim: We studied resuscitation process metrics in patients with out-of-hospital cardiac arrest enrolled in a randomized trial comparing one protocol designed to best use a mechanical CPR device, with another based on the 2005 European Resuscitation Council guidelines for manual CPR. Methods: We analyzed clinical data, ECG signals, and transthoracic impedance signals for a subset of the patients in the LUCAS in Cardiac Arrest (LINC) trial, including 124 patients randomized to mechanical and 82 to manual CPR. Chest compression fraction (CCF) was defined as the fraction of time during cardiac arrest that chest compressions were administered. Results: Patients in the mechanical CPR group had a higher CCF than those in the manual CPR group [0.84 (0.78, 0.91) vs. 0.79 (0.70, 0.86), p < 0.001]. The median duration of their pauses for defibrillation was also shorter [0 s (0, 6.0) vs. 10.0 s (7.0, 14.3), p < 0.001]. Compressions were interrupted for a median of 36.0 s to apply the compression device. There was no difference between groups in duration of the longest pause in compressions [32.5 s vs. 26.0 s, p = 0.24], number of compressions received per minute [86.5 vs. 88.3, p = 0.47], defibrillation success rate [73.2% vs. 81.0%, p = 0.15], or refibrillation rate [74% vs. 77%, p = 0.79]. Conclusions: A protocol using mechanical chest compression devices reduced interruptions in chest compressions, and enabled defibrillation during ongoing compressions, without adversely affecting other resuscitation process metrics. Future emphasis on optimizing device deployment may be beneficial.

  • 24.
    Fors, Diddi
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Eiriksson, K.
    Arvidsson, Dan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Gas embolism during laparoscopic liver resection in a pig model: frequency and severity2010Ingår i: British Journal of Anaesthesia, ISSN 0007-0912, E-ISSN 1471-6771, Vol. 105, nr 3, s. 282-288Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background. Laparoscopic liver surgery is evolving rapidly. Carbon dioxide embolism is a potential complication. The aim of this work was to study the frequency and severity of gas embolism (GE) during laparoscopic liver lobe resection in a pig model and the resulting cardiovascular and respiratory changes. Methods. Fifteen anaesthetized piglets underwent laparoscopic left liver lobe resection. Haemodynamic and respiratory variables were monitored, including systemic and pulmonary arterial pressures, end-tidal CO2, and pulmonary dead space. Online blood gas monitoring and a transoesophageal echocardiography (TOE) were used. GE was graded semi-quantitatively as grade 0 (none), grade 1 (minor), or grade 2 (major), depending on the TOE results. Results. In 10 of 15 piglets, GE occurred. In total, 33 separate episodes of GE were recorded. All 13 episodes of grade 2 and three of grade 1 were serious enough to cause mainly respiratory, but also haemodynamic effects. Mostly, grade 1 GE caused only minor respiratory or haemodynamic changes. Most variables were affected during grade 2 GE; the most important were Pa-O2, Pa-CO2, end-tidal CO2, Vd/Vt, and mean pulmonary arterial pressure. Conclusions. GE occurred frequently during laparoscopic liver resection in this experimental study. Approximately half of the embolisms were serious enough to cause respiratory or haemodynamic disturbances or both. Pending further human studies, a combination of several monitoring techniques, with narrow limits for the alarm settings, will ensure correct interpretation of the complex physiological response to GE and reveal it early enough to alert the anaesthetist and the surgeon to the ongoing problem.

  • 25.
    Fors, Diddi
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Eiriksson, K.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper.
    Waage, A.
    Arvidsson, D.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    High-frequency jet ventilation shortened the duration of gas embolization during laparoscopic liver resection in a porcine model2014Ingår i: British Journal of Anaesthesia, ISSN 0007-0912, E-ISSN 1471-6771, Vol. 113, nr 3, s. 484-490Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background. Positive pressure mechanical ventilation causes rhythmic changes in thoracic pressure and central blood flow. If entrainment occurs, it could be easier for carbon dioxide to enter through a wounded vein during laparoscopic liver lobe resection (LLR). High-frequency jet ventilation (HFJV) is a ventilating method that does not cause pronounced pressure or blood flow changes. This study aimed to investigate whether HFJV could influence the frequency, severity, or duration of gas embolism (GE) during LLR. Methods. Twenty-four anaesthetized piglets underwent lobe resection and were randomly assigned to either normal frequency ventilation (NFV) or HFJV (n=12 per group). During resection, a standardized injury to the left hepatic vein was created to increase the risk of GE. Haemodynamic and respiratory variables were monitored. Online blood gas monitoring and transoesophageal echocardiography were used. GE occurrence and severity were graded as 0 (none), 1 (minor), or 2 (major), depending on the echocardiography results. Results. GE duration was shorter in the HFJV group (P=0.008). However, no differences were found between the two groups in the frequency or severity of embolism. Incidence of Grade 2 embolism was less than that found in previous studies and physiological responses to embolism were variable. Conclusion. HFJV shortened the mean duration of GE during LLR and was a feasible ventilation method during the procedure. Individual physiological responses to GE were unpredictable.

  • 26.
    Fors, Diddi
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Eiriksson, Kristinn
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Arvidsson, Dag
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Gastrointestinalkirurgi.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Elevated PEEP without effect upon gas embolism frequency or severity in experimental laparoscopic liver resection2012Ingår i: British Journal of Anaesthesia, ISSN 0007-0912, E-ISSN 1471-6771, Vol. 109, nr 2, s. 272-278Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Carbon dioxide (CO2) embolism is a potential complication in laparoscopic liver surgery. Gas embolism (GE) is thought to occur when central venous pressure (CVP) is lower than the intra-abdominal pressure (IAP). This study aimed to investigate whether an increased CVP due to induction of PEEP could influence the frequency and severity of GE during laparoscopic liver resection. Twenty anaesthetized piglets underwent laparoscopic left liver lobe resection and were randomly assigned to either 5 or 15 cm H2O PEEP (n10 per group). During resection, a standardized injury to the left hepatic vein [venous cut (VC)] was created to increase the risk of GE. Haemodynamic and respiratory variables were monitored, and online arterial blood gas monitoring and transoesophageal echocardiography (TOE) were used. The occurrence and severity of embolism was graded as 0 (none), 1 (minor), or 2 (major), depending on the TOE results. No differences were found between the two groups regarding the frequency or severity of GE, during either the VC (P0.65) or the rest of the surgery (P0.24). GE occurred irrespective of the CVPIAP gradient. Mechanisms other than the CVPIAP gradient seemed during laparoscopic liver surgery to contribute to the formation of CO2 embolism. This is of clinical importance to the anaesthetists.

  • 27.
    Fors, Diddi
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Eiriksson, Kristinn
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Waage, A.
    Arvidsson, Dag
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Gastrointestinalkirurgi.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    High Frequency Jet Ventilation shortened the duration of gas embolisation during experimental laparoscopic liver resection Artikel i tidskrift (Refereegranskat)
  • 28. Friberg, Hans
    et al.
    Forsberg, Sune
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Scherstén, Fredrik
    Tornvall, Per
    Cronberg, Tobias
    Internationell och nationell konsensus om bästa vård efter hävt hjärtstopp: Många patienter blir helt återställda2010Ingår i: Läkartidningen, ISSN 0023-7205, E-ISSN 1652-7518, Vol. 107, nr 8, s. 510-515Artikel i tidskrift (Refereegranskat)
  • 29. Friberg, Hans
    et al.
    Herlitz, Johan
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Wieloch, Tadeusz
    Terapeutisk hypotermi efter hjärtstopp: ny länk i kedjan som kan rädda liv2004Ingår i: Läkartidningen, ISSN 0023-7205, E-ISSN 1652-7518, Vol. 101, nr 30-31, s. 2412-6Artikel i tidskrift (Refereegranskat)
    Abstract [sv]

    Sudden, unexpected cardiac arrest is a common cause of death. Among patients who are successfully resuscitated, a majority dies without regaining consciousness. Therapeutic hypothermia has recently been shown to improve neurological outcome in two randomized studies and to improve survival in one of them. Based on the two studies, international evidence-based recommendations have been proposed and published (ILCOR). In this review we discuss the theoretical background of hypothermic neuroprotection and therapeutic implications. We propose that victims of cardiac arrest with return of spontaneous circulation and persistent unconsciousness are considered for hypothermia treatment and that data from treated patients are collected in a common website database (see: www.scctg.org) to allow further evaluation of the use of ICU resources, efficacy of hypothermia treatment and potential risks.

  • 30. Friberg, Hans
    et al.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Kylterapi efter hävt hjärtstopp tycks skydda hjärnan: Behandling bör ske enligt protokoll och behandlingsdata registreras2007Ingår i: Läkartidningen, ISSN 0023-7205, E-ISSN 1652-7518, Vol. 104, nr 8, s. 570-571Artikel i tidskrift (Refereegranskat)
    Abstract [sv]

    SBU menar i en Alert-rapport att det vetenskapliga underlaget är otillräckligt för att hävda att en sänkning av kroppstemperaturen efter hävt hjärtstopp leder till förbättrad överlevnad eller minskad risk för neurologisk funktionsnedsättning.

    SBU gör en annan bedömning av bevisvärdet av gjorda studier än internationella expertgrupper, vilka i stället rekommenderar behandling av utvalda patienter.

    Vi tolkar SBUs Alert-rapport så att behandling kan och bör ske i Sverige. Behandling bör dock ske enligt protokoll som styr inklusion och terapi, och behandlingsdata bör insamlas.

  • 31. Friberg, Hans
    et al.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Nya data vid hypotermi vid hjärtstopp: tillgänglig behandling skall erbjudas2004Ingår i: Läkartidningen, ISSN 0023-7205, E-ISSN 1652-7518, Vol. 101, nr 17, s. 1540-2Artikel i tidskrift (Refereegranskat)
  • 32.
    Gagnon, David J.
    et al.
    Maine Med Ctr, Dept Pharm, Portland, ME, USA.
    Nielsen, Niklas
    Helsingborg Hosp, Dept Anesthesia & Intens Care, Helsingborg, Sweden.
    Fraser, Gilles L.
    Maine Med Ctr, Dept Pharm, Portland, ME 04102 USA.;Maine Med Ctr, Dept Crit Care Serv, Portland, ME 04102 USA..
    Riker, Richard R.
    Maine Med Ctr, Dept Crit Care Serv, Portland, ME 04102 USA.;Maine Med Ctr, Neurosci Inst, Portland, ME 04102 USA.;Maine Med Ctr, Div Pulm Med, Portland, ME 04102 USA..
    Dziodzio, John
    Maine Med Ctr, Dept Crit Care Serv, Portland, ME 04102 USA..
    Sunde, Kjetil
    Oslo Univ Hosp Ulleval, Dept Anesthesiol, Div Emergencies & Crit Care, Oslo, Norway..
    Hovdenes, Jan
    Natl Hosp Norway, Oslo Univ Hosp, Dept Anesthesiol, Div Emergencies & Crit Care, Oslo, Norway..
    Stammet, Pascal
    Ctr Hosp Luxembourg, Dept Anesthesia & Intens Care, Luxembourg, Luxembourg..
    Friberg, Hans
    Lund Univ, Dept Clin Sci, Lund, Sweden..
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Wanscher, Michael
    Rigshosp, Copenhagen Univ Hosp, Dept Cardiothorac Anesthesia, DK-2100 Copenhagen, Denmark..
    Seder, David B.
    Maine Med Ctr, Dept Crit Care Serv, Portland, ME 04102 USA.;Maine Med Ctr, Neurosci Inst, Portland, ME 04102 USA.;Maine Med Ctr, Div Pulm Med, Portland, ME 04102 USA..
    Prophylactic antibiotics are associated with a lower incidence of pneumonia in cardiac arrest survivors treated with targeted temperature management2015Ingår i: Resuscitation, ISSN 0300-9572, E-ISSN 1873-1570, Vol. 92, s. 154-159Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Introduction: Prophylactic antibiotics (PRO) reduce the incidence of early-onset pneumonia in comatose patients with structural brain injury, but have not been examined in cardiac arrest survivors undergoing targeted temperature management (TTM). We investigated the effect of PRO on the development of pneumonia in that population. Methods: We conducted a retrospective cohort study comparing patients treated with PRO to those not receiving PRO (no-PRO) using Northern Hypothermia Network registry data. Cardiac arrest survivors >= 18 years of age with a GCS < 8 at hospital admission and treated with TTM at 32-34 degrees C were enrolled in the registry. Differences were analyzed in univariate analyses and with logistic regression models to evaluate independent associations of clinical factors with incidence of pneumonia and good functional outcome. Results: 416 of 1240 patients (33.5%) received PRO. Groups were similar in age, gender, arrest location, initial rhythm, and time from collapse to return of spontaneous circulation. PRO patients had less pneumonia (12.6% vs. 54.9%, p < 0.001) and less sepsis (1.2 vs. 5.7%, p < 0.001) compared to no-PRO patients. ICU length of stay (98 vs. 100 h, p = 0.2) and incidence of a good functional outcome (41.1 vs. 36.6%, p = 0.19) were similar between groups. Backwards stepwise logistic regression demonstrated PRO were independently associated with a lower incidence of pneumonia (OR 0.09, 95% 0.06-0.14, p < 0.001) and a similar incidence of good functional outcome. Conclusions: Prophylactic antibiotics were associated with a reduced incidence of pneumonia but a similar rate of good functional outcome.

  • 33.
    Gedeborg, Rolf
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, Uppsala kliniska forskningscentrum (UCR).
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Wiklund, Lars
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Improved haemodynamics and restoration of spontaneous circulation with constant aortic occlusion during experimental cardiopulmonary resuscitation.1999Ingår i: Resuscitation, ISSN 0300-9572, E-ISSN 1873-1570, Vol. 40, nr 3, s. 171-180Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Continuous balloon occlusion of the descending aorta is an experimental method that may improve blood flow to the myocardium and the brain during cardiopulmonary resuscitation (CPR). The aim of the present investigation was to evaluate the effects of this intervention on haemodynamics and the frequency of restoration of spontaneous circulation. Ventricular fibrillation was induced in 39 anaesthetised piglets, followed by an 8-min non-intervention interval. In a haemodynamic study (n = 10), closed chest CPR was performed for 7 min before the intra-aortic balloon was inflated. This intervention increased mean arterial blood pressure by 20%, reduced cardiac output by 33%, increased coronary artery blood flow by 86%, and increased common carotid artery blood flow by 62%. All these changes were statistically significant. Administration of epinephrine further increased mean arterial blood pressure and coronary artery blood flow, while cardiac output and common carotid artery blood flow decreased. In a study of short-term survival, nine out of 13 animals (69%) in the balloon group and in three out of 13 animals (23%) in the control group had spontaneous circulation restored. The difference between these two proportions was 0.46, which was statistically significant with a 95% confidence interval from 0.12 to 0.80. In conclusion, balloon occlusion of the descending aorta increased coronary and common carotid artery blood flow and the frequency of restoration of spontaneous circulation. It was also noted that epinephrine appears to augment the redistribution of blood flow caused by the aortic occlusion.

  • 34.
    Gedeborg, Rolf
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Silander, H C
    Ronne-Engström, Elisabeth
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för neurovetenskap, Neurokirurgi.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Wiklund, Lars
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Adverse effects of high-dose epinephrine on cerebral blood flow during experimental cardiopulmonary resuscitation2000Ingår i: Critical Care Medicine, ISSN 0090-3493, E-ISSN 1530-0293, Vol. 28, nr 5, s. 1423-1430Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    OBJECTIVE:

    To study the effects of high-dose epinephrine, compared with standard-dose epinephrine, on the dynamics of superficial cortical cerebral blood flow as well as global cerebral oxygenation during experimental cardiopulmonary resuscitation. We hypothesized that high-dose epinephrine might be unable to improve cerebral blood flow during cardiopulmonary resuscitation as compared with standard-dose epinephrine.

    DESIGN:

    Randomized controlled study.

    SETTING:

    University hospital research laboratory.

    SUBJECTS:

    A total of 20 male anesthetized piglets.

    INTERVENTIONS:

    Ventricular fibrillation was induced. A nonintervention interval of 8 mins was followed by open-chest cardiopulmonary resuscitation. The animals were randomized to receive repeated bolus injections of either 20 microg/kg (standard-dose group, n = 10) or 200 microg/kg (high-dose group, n = 10) of epinephrine.

    MEASUREMENTS AND MAIN RESULTS:

    Focal cortical cerebral blood flow was measured continuously by using laser Doppler flowmetry. The duration of blood flow increase was significantly shorter in the high-dose group after the second dose of epinephrine. In the high-dose group there was also a consistent tendency for lower peak levels and shorter duration of flow increase in response to repeated bolus doses of epinephrine. Cerebral oxygen extraction ratio was significantly lower in the high-dose group after administration of epinephrine.

    CONCLUSIONS:

    Repeated bolus doses of epinephrine 200 microg/kg, as compared with 20 microg/kg, do not improve superficial cortical cerebral blood flow during experimental open-chest cardiopulmonary resuscitation. High-dose epinephrine appears to induce vasoconstriction of cortical cerebral blood vessels resulting in redistribution of blood flow from superficial cortex. This might be one explanation for the failure of high-dose epinephrine to improve overall outcome in clinical trials.

  • 35.
    Gedeborg, Rolf
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, Uppsala kliniska forskningscentrum (UCR).
    Silander, H C
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Wiklund, Lars
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Cerebral ischaemia in experimental cardiopulmonary resuscitation--comparison of epinephrine and aortic occlusion.2001Ingår i: Resuscitation, ISSN 0300-9572, E-ISSN 1873-1570, Vol. 50, nr 3, s. 319-29Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The apparent inability of epinephrine to improve outcome after cardiopulmonary resuscitation (CPR) could be caused by direct negative effects on the cerebral circulation. Constant aortic occlusion with a balloon catheter could be an alternative way to improve coronary and cerebral perfusion during CPR. The objective of the present study was to compare the effects of standard-dose epinephrine with balloon occlusion of the descending aorta on cortical cerebral blood flow augmentation during CPR. Ventricular fibrillation was induced in 24 anaesthetised piglets. A non-intervention interval of 9 min was followed by open-chest CPR. The animals were randomised to receive repeated intravenous bolus doses of epinephrine 20 microg/kg or balloon occlusion of the descending aorta. Focal cortical cerebral blood flow was measured continuously using laser-Doppler flowmetry. Balloon occlusion of the aorta resulted in a significantly higher mean cortical cerebral blood flow and a lower cerebral oxygen extraction ratio than epinephrine during CPR. After restoration of spontaneous circulation the cerebral perfusion appeared compromised to the same extent in both groups, with lower blood flow compared to baseline, high cerebral oxygen extraction and cerebral tissue acidosis. No difference in cerebral cortical vascular resistance between the two groups could be detected. It is concluded that aortic balloon occlusion was superior to epinephrine in cerebral blood flow augmentation during resuscitation and did not generate adverse effects on cerebral blood flow, oxygenation or tissue pH after restoration of spontaneous circulation. No evidence of cerebral vasoconstriction induced by standard-dose epinephrine was found.

  • 36.
    Gedeborg, Rolf
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, Uppsala kliniska forskningscentrum (UCR).
    Silander, H
    Ronne-Engstrom, E
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Wiklund, Lars
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Effects of "high dose" epinephrine on cerebral blood flow during experimental open chest cardiopulmonary resuscitation.1997Ingår i: Crit Care Med, Vol. 25, s. 32-Artikel i tidskrift (Refereegranskat)
  • 37.
    Gedeborg, Rolf
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, Uppsala kliniska forskningscentrum (UCR).
    Silander, HC
    Ronne-Engstrom, E
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Wiklund, Lars
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Adverse effects of high-dose epinephrine on cerebral blood flow duringexperimental cardiopulmonary resuscitation.2000Ingår i: Crit Care Med, Vol. 28, s. 1423-Artikel i tidskrift (Refereegranskat)
  • 38.
    Gedeborg, Rolf
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, Uppsala kliniska forskningscentrum (UCR).
    Silander, HC
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Wiklund, Lars
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Cerebral ischaemia in experimental cardiopulmonaryresuscitation--comparison of epinephrine and aortic occlusion.2001Ingår i: Resuscitation, Vol. 50, s. 319-Artikel i tidskrift (Refereegranskat)
  • 39.
    Hardig, Bjarne Madsen
    et al.
    Physio Control, Lund, Sweden..
    Lindgren, Erik
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Östlund, Ollie
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, Uppsala kliniska forskningscentrum (UCR).
    Herlitz, Johan
    Univ Boras, Prehosp Res Ctr Western Sweden, Res Ctr PreHospen, Sch Hlth Sci, Boras, Sweden..
    Karlsten, Rolf
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Outcome among VF/VT patients in the LINC (LUCAS IN cardiac arrest) trial-A randomised, controlled trial2017Ingår i: Resuscitation, ISSN 0300-9572, E-ISSN 1873-1570, Vol. 115, s. 155-162Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Introduction: The LINC trial evaluated two ALS-CPR algorithms for OHCA patients, consisting of 3 min' mechanical chest compression (LUCAS) cycles with defibrillation attempt through compressions vs. 2 min' manual compressions with compression pause for defibrillation. The PARAMEDIC trial, using 2 min' algorithm found worse outcome for patients with initial VF/VT in the LUCAS group and they received more adrenalin compared to the manual group. We wanted to evaluate if these algorithms had any outcome effect for patients still in VF/VT after the initial defibrillation and how adrenalin timing impacted it. Method: Both groups received manual chest compressions first. Based on non-electronic CPR process documentation, outcome, neurologic status and its relation to CPR duration prior to the first detected return of spontaneous circulation (ROSC), time to defibrillation and adrenalin given were analysed in the subgroup of VF/VT patients. Results: Seven hundred and fifty-seven patients had still VF/VT after initial chest compressions combined with a defibrillation attempt (374 received mechanical CPR) or not (383 received manual CPR). No differences were found for ROSC (mechanical CPR 58.3% vs. manual CPR 58.6%, p = 0.94), or 6-month survival with good neurologic outcome (mechanical CPR 25.1% vs. manual CPR 23.0%, p = 0.50). A significant difference was found regarding the time from start of manual chest compression to the first defibrillation (mechanical CPR: 4 (2-5) min vs manual CPR 3 (2-4) min, P < 0.001). The time from the start of manual chest compressions to ROSC was longer in the mechanical CPR group. Conclusions: No difference in short-or long-term outcomes was found between the 2 algorithms for patients still in VF/VT after the initial defibrillation. The time to the 1st defibrillation and the interval between defibrillations were longer in the mechanical CPR group without impacting the overall outcome. The number of defibrillations required to achieve ROSC or adrenalin doses did not differ between the groups.

  • 40. Hedlund, A
    et al.
    Lichtwarck-Aschoff, Michael
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper.
    Guttmann, J
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Sjostrand, UH
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper.
    Experimental evaulation of procedures to optimize ventilatory strategy in clinical studies of pressure- and volume- controlled ventilation in burn intensive care.1998Ingår i: Nordic Burn 98Artikel, recension (Övrigt vetenskapligt)
  • 41. Horna Strand, A
    et al.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Huss, Fredrik
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Plastikkirurgi.
    Mani, Maria
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Plastikkirurgi.
    Epidermal exfoliation of over 95 % after a burn in an 18-month-old boy: a case report and a literature review.2015Ingår i: Annals of Burns and Fire Disasters, ISSN 1121-1539, E-ISSN 1592-9558, Vol. 28Artikel i tidskrift (Refereegranskat)
  • 42.
    Horna Strand, Angelica
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Plastikkirurgi.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Huss, Fredrik
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Plastikkirurgi.
    Mani, Maria
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Plastikkirurgi.
    Epidermal exfoliation of over 95% after a burn in an 18-month-old boy: Case report and review of the literature2016Ingår i: Burns, ISSN 0305-4179, E-ISSN 1879-1409, Vol. 42, nr 2, s. E18-E23Artikel, forskningsöversikt (Refereegranskat)
    Abstract [en]

    This report concerns an 18-month-old boy who presented with a 6% total body surface area scald. The subject of this report is unique in that he developed the largest exfoliation described in literature. After 3 days an epidermal exfoliation with the appearance of a deliberately inflicted scald developed. As the exfoliation progressed to over 95% total body surface area the suspicion of child abuse or neglect could be abandoned. The diagnosis Staphylococcal scalded skin syndrome was set, due to the finding of Staphylococcus aureus on swabs, the lack of mucosal engagement, and the patient's age. The boy's skin healed within 3 weeks. The few reports published are all case reports and most frequently described visually infected burns with smaller epidermal exfoliations, and clinically based exfoliation diagnosis. S. aureus often cause burn wound infections that can lead to complications caused by cross-infection. It is important for burn surgeons and intensive care specialists to be aware of the increased possibility of Staphylococcal scalded skin syndrome occurring in patients who have a reduced barrier to infection such as burn patients and also, that the diagnosis can be difficult to make.

  • 43. Jersenius, U.
    et al.
    Fors, Diddi
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Arvidsson, Dag
    Laparoscopic parenchymal division of the liver in a porcine model: comparison of the efficacy and safety of three different techniques2007Ingår i: Surgical Endoscopy, ISSN 0930-2794, E-ISSN 1432-2218, Vol. 21, nr 2, s. 315-320Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    BACKGROUND: Bleeding is a known and CO2 embolization a suggested risk factor for increased morbidity after laparoscopic liver resection. Devices for laparoscopic liver parenchymal transection must be evaluated for safety in this context. METHOD: Twelve piglets underwent laparoscopic surgery during CO2 pneumoperitoneum, each animal receiving three 6 cm long transections into the liver parenchyma made with ultrasonic dissector, ultrasonic shears and vessel sealing system, respectively. Endpoints were bleeding, operation time and gas embolization. The transections and embolization events, evaluated with transesophageal echocardiography, were video recorded. Bleeding and embolization were also assessed on video tapes and operating time measured. Arterial blood gases were recorded on line. RESULTS: The ultrasonic dissector was least advantageous in terms of bleeding and operation time. Gas embolization was more frequent with the vessel sealing system than with the ultrasonic dissector and ultrasonic shears. During two episodes of gas embolization, pCO2 increased and pO2 and pH decreased. CONCLUSIONS: Use of all three devices is feasible. Bleeding and operation time are greatest with the ultrasonic dissector. Gas embolization occurs during transection, though in most instances it is completely harmless. Laparoscopic liver surgery with these techniques used may pose a risk of gas embolization with clinical implications. Monitoring for such events is probably to be recommended.

  • 44.
    Jersenius, Ulf
    et al.
    Karolinska institutet.
    Fors, Diddi
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Arvidsson, Dag
    Karolinska institutet.
    The effects of experimental venous carbon dioxide embolization on hemodynamic and respiratory variables2006Ingår i: Acta Anaesthesiologica Scandinavica, ISSN 0001-5172, E-ISSN 1399-6576, Vol. 50, nr 2, s. 156-162Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background:  Laparoscopic liver resection is a relatively new surgical procedure. Carbon dioxide (CO2) pneumoperitoneum and laparoscopic liver dissection are recognized as risk factors for CO2 embolism to the pulmonary circulation. The embolization can be difficult to detect and can theoretically increase peri-operative morbidity. The aim of this study was to evaluate the cardiopulmonary effects in a pig model during a time period of 4 h after an experimental CO2 embolization.

    Methods:  Eleven piglets were anesthesized. Nine were embolized with a single intravenous injection of 0.4 ml/kg CO2 and two served as controls. Respiratory and cardiovascular variables, including pulmonary artery pressure and cardiac output, were monitored for 4 h after embolization, and arterial blood gases were monitored on-line.

    Results:  The embolized piglets had an increase in ventilatory dead space, pulmonary vascular resistance and pulmonary artery pressure and a decrease in cardiac output that lasted throughout the 4-h observation time. The mean arterial pressure and heart rate were unchanged. An early sign of embolization was a rapid fall in end-tidal CO2 and Pao2 and a rise in Paco2.

    Conclusion:  Negative changes in cardiopulmonary physiology persisted for at least 4 h after a single intravenous CO2 injection, in spite of this gas being highly soluble in blood. This is a more prolonged influence of CO2 embolization than previously described. Extensive monitoring for early detection of an embolization may be recommended to limit morbidity in patients undergoing laparoscopic liver surgery.

  • 45.
    Johansson, Anna
    et al.
    Natl Board Forens Med, Dept Forens Genet & Forens Toxicol, Linkoping, Sweden..
    Lindstedt, Daniel
    Natl Board Forens Med, Dept Forens Genet & Forens Toxicol, Linkoping, Sweden..
    Roman, Markus
    Natl Board Forens Med, Dept Forens Genet & Forens Toxicol, Linkoping, Sweden..
    Thelander, Gunilla
    Natl Board Forens Med, Dept Forens Genet & Forens Toxicol, Linkoping, Sweden..
    Nielsen, Elisabet I.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Farmaceutiska fakulteten, Institutionen för farmaceutisk biovetenskap.
    Lennborn, Ulrica
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Sandler, Håkan
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Rättsmedicin. Natl Board Forens Med, Dept Forens Med, Uppsala, Sweden.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Ahlner, Johan
    Natl Board Forens Med, Dept Forens Genet & Forens Toxicol, Linkoping, Sweden.;Linkoping Univ, Dept Med & Hlth Sci, Div Drug Res, Linkoping, Sweden..
    Kronstrand, Robert
    Natl Board Forens Med, Dept Forens Genet & Forens Toxicol, Linkoping, Sweden.;Linkoping Univ, Dept Med & Hlth Sci, Div Drug Res, Linkoping, Sweden..
    Kugelberg, Fredrik C.
    Natl Board Forens Med, Dept Forens Genet & Forens Toxicol, Linkoping, Sweden.;Linkoping Univ, Dept Med & Hlth Sci, Div Drug Res, Linkoping, Sweden..
    A non-fatal intoxication and seven deaths involving the dissociative drug 3-MeO-PCP2017Ingår i: Forensic Science International, ISSN 0379-0738, E-ISSN 1872-6283, Vol. 275, s. 76-82Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Introduction: 3-methoxyphencyclidine (3-MeO-PCP) appeared on the illicit drug market in 2011 and is an analogue of phencyclidine, which exhibits anesthetic, analgesic and hallucinogenic properties. In this paper, we report data from a non-fatal intoxication and seven deaths involving 3-MeO-PCP in Sweden during the period March 2014 until June 2016. Case descriptions: The non-fatal intoxication case, a 19-year-old male with drug problems and a medical history of depression, was found awake but tachycardic, hypertensive, tachypnoeic and catatonic at home. After being hospitalized, his condition worsened as he developed a fever and lactic acidosis concomitant with psychomotor agitation and hallucinations. After 22 h of intensive care, the patient had made a complete recovery. During his hospitalization, a total of four blood samples were collected at different time points. The seven autopsy cases, six males and one female, were all in their twenties to thirties with psychiatric problems and/or an ongoing drug abuse. Methods: 3-MeO-PCP was identified with liquid chromatography (LC)/time-of-flight technology and quantified using LC-tandem mass spectrometry. Results: In the clinical case, the concentration of 3-MeO-PCP was 0.14 mu g/g at admission, 0.08 mu g/g 2.5 h after admission, 0.06 mu g/g 5 h after admission and 0.04 mu g/g 17 h after admission. The half-life of 3-MeO-PCP was estimated to 11 h. In the autopsy cases, femoral blood concentrations ranged from 0.05 mu g/g to 0.38 mu g/g. 3-MeO-PCP was the sole finding in the case with the highest concentration and the cause of death was established as intoxication with 3-MeO-PCP. In the remaining six autopsy cases, other medications and drugs of abuse were present as well. Conclusion: Despite being scheduled in January 2015, 3-MeO-PCP continues to be abused in Sweden. Exposure to 3-MeO-PCP may cause severe adverse events and even death, especially if the user does not receive life-supporting treatment.

  • 46.
    Johansson, Jakob
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Gedeborg, Rolf
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, Uppsala kliniska forskningscentrum (UCR).
    Basu, Samar
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för folkhälso- och vårdvetenskap.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Increased cortical cerebral blood flow by continuous infusion of epinephrine during experimental cardiopulmonary resuscitation2003Ingår i: Resuscitation, ISSN 0300-9572, E-ISSN 1873-1570, Vol. 57, nr 3, s. 299-307Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    OBJECTIVE: To study the effects of continuously administered adrenaline (epinephrine), compared to bolus doses, on the dynamics of cortical cerebral blood flow during experimental cardiopulmonary resuscitation (CPR), and after restoration of spontaneous circulation (ROSC).

    METHODS: Ventricular fibrillation was induced in 24 anaesthetised pigs. After a 5-min non-intervention interval, closed-chest CPR was started. The animals were randomised into two groups. One group received three boluses of adrenaline (20 microg/kg) at 3-min intervals. The other group received an initial bolus of adrenaline (20 microg/kg) followed by an infusion of adrenaline (10 microg/kg x min). After 9 min of CPR, defibrillation was attempted, and if spontaneous circulation was achieved the adrenaline infusion was stopped. Cortical cerebral blood flow was measured continuously using Laser-Doppler flowmetry. Jugular bulb oxygen saturation was measured to reflect global cerebral oxygenation. Repeated measurements of 8-iso-prostaglandin F(2alpha) (8-iso-PGF(2alpha)) in jugular bulb plasma were performed to evaluate cerebral oxidative injury.

    RESULTS: During CPR mean cortical cerebral blood flow was significantly higher (P=0.009) with a continuous adrenaline infusion than with repeated bolus doses. Following ROSC there was no significant difference in cortical cerebral blood flow between the two study groups. No differences in coronary perfusion pressure, rate of ROSC, jugular bulb oxygen saturation or 8-iso-PGF(2alpha) were seen between the study groups.

    CONCLUSIONS: Continuous infusion of adrenaline (10 microg/kg x min) generated a more sustained increase in cortical cerebral blood flow during CPR as compared to intermittent bolus doses (20 microg/kg every third minute). Thus, continuous infusion might be a more appropriate way to administer adrenaline as compared to bolus doses during CPR.

  • 47.
    Johansson, Jakob
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Gedeborg, Rolf
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Vasopressin versus continuous adrenaline during experimental cardiopulmonary resuscitation2004Ingår i: Resuscitation, ISSN 0300-9572, E-ISSN 1873-1570, Vol. 62, nr 1, s. 61-69Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Objective: To evaluate the effects of a bolus dose of vasopressin compared to continuous adrenaline (epinephrine) infusion on vital organ blood flow during cardiopulmonary resuscitation (CPR). Methods: Ventricular fibrillation was induced in 24 anaesthetised pigs. After a 5-min non-intervention interval, CPR was started. After 2 min of CPR the animals were randomly assigned to receive either vasopressin (0.4 U/kg) or adrenaline (bolus of 20 μg/kg followed by continuous infusion of 10 μg/(kg min)). Defibrillation was attempted after 9 min of CPR. Results: Vasopressin generated higher cortical cerebral blood flow (P<0.001) and lower cerebral oxygen extraction (P<0.001) during CPR compared to continuous adrenaline. Coronary perfusion pressure during CPR was higher in vasopressin-treated pigs (P<0.001) and successful resuscitation was achieved in 12/12 in the vasopressin group versus 5/12 in the adrenaline group (P=0.005). Conclusions: In this experimental model, vasopressin caused a greater increase in cortical cerebral blood flow and lower cerebral oxygen extraction during CPR compared to continuous adrenaline. Furthermore, vasopressin generated higher coronary perfusion pressure and increased the likelihood of restoring spontaneous circulation.

  • 48.
    Johansson, Jakob
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Hammerby, Rutger
    Oldgren, Jonas
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Kardiologi.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Gedeborg, Rolf
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Adrenaline administration during cardiopulmonary resuscitation: poor adherence to clinical guidelines2004Ingår i: Acta Anaesthesiologica Scandinavica, ISSN 0001-5172, E-ISSN 1399-6576, Vol. 48, nr 7, s. 909-913Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    BACKGROUND: Adrenaline does not appear to improve the outcome after cardiac arrest in clinical trials in spite of beneficial effects in experimental studies. The objective of this study was to determine whether adrenaline was administered in accordance with advanced cardiac life support (ACLS) guidelines during adult cardiopulmonary resuscitation (CPR). METHODS: From 15 January to 31 December 2000, all patients at Uppsala University Hospital in whom CPR was attempted were registered prospectively. The duration of CPR was documented in the register and the total dose of adrenaline was retrieved retrospectively from patient records. From these data the average interval between adrenaline doses was calculated. RESULTS: Data for evaluation of the between-dose interval of adrenaline was available in 53 of 107 registered cardiac arrests. In 68% (36/53) the average between-dose interval was longer than the 3-5 min recommended in the guidelines, and 8% (4/53) received no adrenaline. The median interval between adrenaline doses during CPR was 6.5 min (25th-75th percentile: 5.1-10.4). Adherence to guidelines was lower in out-of-hospital cardiac arrest than in in-hospital cardiac arrest (P = 0.01). CONCLUSIONS: In the majority of cases adrenaline did not appear to be administered according to current ACLS guidelines.

  • 49.
    Johansson, Jakob
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Ridefelt, Peter
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper.
    Basu, Samar
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för folkhälso- och vårdvetenskap.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Antithrombin administration during experimental cardiopulmonary resuscitation2004Ingår i: Resuscitation, ISSN 0300-9572, E-ISSN 1873-1570, Vol. 62, nr 1, s. 71-78Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    OBJECTIVE: To determine whether antithrombin (AT) administration during cardiopulmonary resuscitation (CPR) increased cerebral circulation and reduced reperfusion injury.

    METHODS: Ventricular fibrillation was induced in 24 anaesthetised pigs. After a 5-min non-intervention interval, CPR was started. The animals were randomised into two groups. The treatment group received AT (250 U/kg) and the control group received placebo, after 7 min of CPR. Defibrillation was attempted after 9 min of CPR. If restoration of spontaneous circulation (ROSC) was achieved, the animals were observed for 4 h. Cortical cerebral blood flow was measured using laser-Doppler flowmetry. Cerebral oxygen extraction was calculated to reflect the relation between global cerebral circulation and oxygen demand. Measurements of eicosanoids (8-iso-PGF(2alpha) and 15-keto-dihydro-PGF(2alpha)), AT, thrombin-antithrombin complex (TAT) and soluble fibrin in jugular bulb plasma were performed to detect any signs of cerebral oxidative injury, inflammation and coagulation.

    RESULTS: There was no difference between the groups in cortical cerebral blood flow, cerebral oxygen extraction, or levels of eicosanoids, TAT or soluble fibrin in jugular bulb plasma after ROSC. In the control group reduction of AT began 15 min after ROSC and continued throughout the entire observation period (P < 0.05). Eicosanoids and TAT were increased compared to baseline in all animals (P < 0.01).

    CONCLUSIONS: In this experimental model of CPR, AT administration did not increase cerebral circulation or reduce reperfusion injury after ROSC.

  • 50.
    Johansson, Jakob
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Ridefelt, Peter
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper.
    Basu, Samar
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för folkhälso- och vårdvetenskap.
    Rubertsson, Sten
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Anestesiologi och intensivvård.
    Antithrombin reduction after experimental cardiopulmonary resuscitation2003Ingår i: Resuscitation, ISSN 0300-9572, E-ISSN 1873-1570, Vol. 59, nr 2, s. 229-236Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    OBJECTIVE: To determine whether activation of coagulation and inflammation during cardiac arrest results in a reduction of antithrombin (AT) and an increase in thrombin-antithrombin (TAT) complex during reperfusion.

    METHODS: Ventricular fibrillation (VF) was induced in ten anaesthetized pigs. After a 5-min non-intervention interval, closed-chest cardiopulmonary resuscitation (CPR) was performed for 9 min before defibrillation was attempted. If restoration of spontaneous circulation (ROSC) was achieved, the animals were observed for 4 h and repeated blood samples were taken for assay of AT, TAT and eicosanoids (8-iso-PGF(2alpha) and 15-keto-dihydro-PGF(2alpha)).

    RESULTS: AT began to decrease 15 min after ROSC and the reduction continued throughout the observation period (P<0.05). The lowest mean value (79%) occurred 60 min after ROSC. The TAT level was increased during the first 3 h after ROSC (P<0.05), indicating thrombin generation. The eicosanoids were increased throughout the observation period (P<0.05).

    CONCLUSIONS: AT is reduced and TAT and eicosanoids are increased after cardiac arrest, indicating activation of coagulation and inflammation.

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