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Thorbjörnsen, Knut
Publications (3 of 3) Show all publications
Linder, F., Holmberg, L., Björck, M., Juhlin, C., Thorbjörnsen, K., Wisinger, J., . . . Mani, K. (2019). A prospective stepped wedge cohort evaluation of the new national trauma team activation criteria in Sweden - the TRAUMALERT study.. Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine, 27(1), Article ID 52.
Open this publication in new window or tab >>A prospective stepped wedge cohort evaluation of the new national trauma team activation criteria in Sweden - the TRAUMALERT study.
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2019 (English)In: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine, ISSN 1757-7241, E-ISSN 1757-7241, Vol. 27, no 1, article id 52Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Trauma triage based on prehospital information facilitates correct allocation of in-hospital resources. The Swedish national two-tier trauma team activation (TTA) criteria were revised in 2016. The current study aimed to evaluate the safety and efficacy of the new criteria.

METHODS: Five centres covering trauma care for 1.2 million inhabitants registered all trauma patients prospectively in the Swedish trauma registry (SweTrau) prior to and after stepwise introduction of new TTA criteria within the cohort (a prospective stepped-wedge cohort study design; period August 2016-November 2017). Evaluation of full- and limited-TTA frequency, under- and overtriage were performed at equal duration before and after this change.

RESULTS: The centres registered 1948 patients, 1882 (96.6%) of which were included in the study. With new criteria, frequency of full-TTA was unchanged, while limited-TTA decreased with 46.3% (from 988 to 531). 30-day trauma mortality was unchanged. The overtriage was 107/150 (71.3%) with former criteria, and 104/144 (72.2%) with new criteria, p = 0.866. Undertriage was 50/1037 (4.8%) versus 39/551 (7.1%), p = 0.063. Undertriage was consistently > 20% in patients with fall injury. Among patients with Injury Severity Score (ISS) > 15, 50/93 (53.8%) did not initiate full-TTA with former, vs 39/79 (49.4%) with new criteria, p = 0.565. Age > 60-years was a risk factor for undertriage (OR 2.89, p < 0.001), while low fall injuries indicated a trend (OR 2.70, p = 0.051).

CONCLUSIONS: The newly implemented Swedish TTA criteria result in a reduction in limited TTA frequency, indicating an increased efficiency in use of resources. The over- and undertriage is unchanged compared to former criteria, thus upholding patient safety.

Epidemiology, Patient safety, Prospective stepped wedge cohort design, Trauma, Triage, Wounds and injuries
National Category
urn:nbn:se:uu:diva-383430 (URN)10.1186/s13049-019-0619-1 (DOI)000466508600002 ()31039800 (PubMedID)
Available from: 2019-05-14 Created: 2019-05-14 Last updated: 2019-11-21Bibliographically approved
Thorbjörnsen, K., Svensjö, S., Gidlund, K. D., Gilgen, N.-P. & Wanhainen, A. (2019). Prevalence and natural history of and risk factors for subaneurysmal aorta among 65-year-old men. Upsala Journal of Medical Sciences, 124(3), 180-186
Open this publication in new window or tab >>Prevalence and natural history of and risk factors for subaneurysmal aorta among 65-year-old men
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2019 (English)In: Upsala Journal of Medical Sciences, ISSN 0300-9734, E-ISSN 2000-1967, Vol. 124, no 3, p. 180-186Article in journal (Refereed) Published
Abstract [en]

Background: The aims of this study were to determine the prevalence of screening-detected subaneurysmal aorta (SAA), i.e. an aortic diameter of 2.5-2.9 cm, its associated risk factors, and natural history among 65-year-old men.

Methods: A total of 14,620 men had their abdominal aortas screened with ultrasound and completed a health questionnaire containing information on smoking habits and medical history. They were categorized based on the aortic diameter: normal aorta (n = 14,129), SAA (2.5-2.9 cm; n = 258), and abdominal aortic aneurysm (AAA) (>= 3.0 cm; n = 233). The SAA-group was rescanned after 5 years. Associated risk factors were analyzed.

Results: The SAA-prevalence was 1.9% (95% confidence interval 1.7%-2.1%), with 57.0% (50.7%-63.3%) expanding to >= 3.0 cm within 5 years. Frequency of smoking, coronary artery disease, hypertension, hyperlipidemia, and claudication were significantly higher in those with SAA and AAA compared to those with normal aortic diameter. Current smoking was the strongest risk factor for SAA (odds ratio [OR] 2.8; P < 0.001) and even stronger for AAA (OR 3.6; P < 0.001). Men with SAA expanding to AAA within 5 years presented pronounced similarities to AAA at baseline.

Conclusions: Men with SAA and AAA presented marked similarities in the risk factor profile. Smoking was the strongest risk factor with an incremental association with disease severity, and disease progression. This indicates that SAA and AAA may have the same pathophysiological origin and that SAA should be considered as an early stage of aneurysm formation. Further research on the cost-effectiveness and potential benefits of surveillance as well as smoking cessation and secondary cardiovascular prevention in this subgroup is warranted.

Place, publisher, year, edition, pages
Abdominal aortic aneurysm, prevention and control, screening, smoking, subaneurysmal aorta, ultrasonography
National Category
Cardiac and Cardiovascular Systems
urn:nbn:se:uu:diva-396108 (URN)10.1080/03009734.2019.1648611 (DOI)000484518700001 ()31460822 (PubMedID)
Swedish Heart Lung Foundation
Available from: 2019-11-01 Created: 2019-11-01 Last updated: 2019-11-01Bibliographically approved
Thorbjörnsen, K., Gidlund, K. D., Björck, M., Kragsterman, B. & Wanhainen, A. (2016). Editor's Choice - Long-term Outcome After EndoVAC Hybrid Repair of Infected Vascular Reconstructions. European Journal of Vascular and Endovascular Surgery, 51(5), 724-732
Open this publication in new window or tab >>Editor's Choice - Long-term Outcome After EndoVAC Hybrid Repair of Infected Vascular Reconstructions
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2016 (English)In: European Journal of Vascular and Endovascular Surgery, ISSN 1078-5884, E-ISSN 1532-2165, Vol. 51, no 5, p. 724-732Article in journal (Refereed) Published
Abstract [en]

Objective/Background: Vascular graft infection is a serious and challenging complication. In situations when neither traditional radical surgery nor conservative negative pressure wound therapy (VAC) alone, are considered feasible or safe, for example due to bleeding, adverse anatomy, or severe comorbidity, a novel hybrid procedure was developed. The EndoVAC technique consists of (i) relining of the infected reconstruction with a stent graft; (ii) surgical revision (without clamping the reconstruction); and (iii) VAC therapy, to permit granulation and secondary delayed healing, and long-term antibiotic treatment. The aim of the study is to report long-term follow up data of this new treatment modality. Methods: From November 2007 to June 2015, 17 EndoVAC procedures were performed in 16 patients (eight men, aged 16-91 years): six infected carotid patches after carotid endarterectomy, three infected neck deviations, two infected femoro-popliteal bypasses, three infected patches after femoral thrombo-endarterectomy, and two infected vascular accesses. Surveillance was performed routinely every 3-6 months and included clinical examination, hematologic tests, duplex ultrasonography, and imaging techniques, including 18F-fluorodeoxyglucose positron emission tomography/computed tomography. Results: Primary technical success rate was 100%. Antibiotics were prescribed for a median of 3 months (range 1-20 months). The median duration of VAC treatment was 14 days (range 9-57 days). Complications included early, transient stroke (n = 1), temporary hypoglossal palsy (n = 1), and late, asymptomatic occluded bypasses (n = 2), stent graft thrombosis (n = 1), and moderate carotid stenosis (n = 1). After a median of 5 years (range 1-90 months) of follow up, all patients had healed graft infections with no recurrence was observed. Eight patients died as a result of severe comorbidities, unrelated to the infection or hybrid procedure, 1 month 7 years after treatment. Conclusion: The EndoVAC technique is an alternative, less invasive, option for treatment of infected vascular reconstructions in selected cases, when neither traditional radical surgery, nor conservative simple negative pressure wound therapy are considered feasible or safe. The exact indications for this alternative hybrid treatment need to be established.

Access site infection, Hybrid technique, Negative pressure wound therapy, Stent graft, Vacuum assisted wound closure, Vascular graft infection
National Category
Cardiac and Cardiovascular Systems
urn:nbn:se:uu:diva-298230 (URN)10.1016/j.ejvs.2016.01.011 (DOI)000376213600023 ()26944600 (PubMedID)
Available from: 2016-07-01 Created: 2016-07-01 Last updated: 2017-11-28Bibliographically approved

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