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  • 1.
    Axelson, Hans W.
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Clinical Neurophysiology.
    Hesselager, Göran
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Neurosurgery.
    Flink, Roland
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Clinical Neurophysiology.
    Successful localization of the Broca area with short-train pulses instead of "Penfield" stimulation.2009In: Seizure, ISSN 1059-1311, E-ISSN 1532-2688, Vol. 18, no 5, p. 374-375Article in journal (Refereed)
    Abstract [en]

    Direct electrical stimulation of functional cortical areas is a standard procedure in epilepsy and glioma surgery. Many previous studies support that stimulation of the motor cortex with short-train pulses is a less epileptogenic alternative to the 50–60 Hz ‘Penfield’ technique. However, whether the short-train stimulation is useful also in mapping of speech areas is unclear. In this case report we present a patient with oligodendroglioma near the Broca area. Extraoperative electrical stimulation via a subdural grid electrode was primarily performed to locate the speech area. The cortex was stimulated with short-train pulses (5 pulses, 0.5 pulse duration and 3 ms interpulse interval) in addition to 1–3 s 50 Hz stimulation.The patient had speech arrest from both types of stimulation techniques during a naming task. It was however critical that the short (14.5 ms) train stimulation was synchronized with the presentation of the naming objects. If not, there was no speech arrest. Despite this possible pitfall, this case has encouraged us to further try short-train stimulation in attempts to reduce stimulus-triggered seizures during mapping of eloquent areas.

  • 2. Bialek, Fatima
    et al.
    Rydenhag, Bertil
    Flink, Roland
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Clinical Neurophysiology.
    Malmgren, Kristina
    Outcomes after resective epilepsy surgery in patients over 50 years of age in Sweden 1990-2009-A prospective longitudinal study2014In: Seizure, ISSN 1059-1311, E-ISSN 1532-2688, Vol. 23, no 8, p. 641-645Article in journal (Refereed)
    Abstract [en]

    Purpose: Most epilepsy surgery candidates are young adults. Outcome reports after epilepsy surgery in patients >= 50 years are few and varying. The aim of this study was to describe patient characteristics of older compared to younger adults and analyse seizure, complication and vocational outcomes in a large population-based series. Methods: We analysed data from the Swedish National Epilepsy Surgery Register for 1990-2009 for patients >= 19 years at resective surgery who had completed two-year follow-up. Variables studied were seizure outcome, histo-pathological diagnoses, complications and vocational outcome. Data from patients >= 50 years and 19-49 years at surgery were compared. Results: 558 Adults underwent resective epilepsy surgery 1990-2009 and had two-year follow-up. 12% of the adults (67 patients) were >= 50 years at surgery. Patients >= 50 had longer epilepsy duration, more often had mesial sclerosis and less often had neurodevelopmental tumours and cortical malformations. The proportion of seizure-free patients at two-year follow-up did not differ between those >= 50 and 1949 years (61% versus 61% seizure-free last year, 48% versus 43% completely seizure-free since surgery), neither did the occurrence of major complications (3% in both groups). The vocational situation was mainly stable between baseline and two-year follow-up in both groups, although older patients were less often employed than younger. Conclusion: 12% of adults in the Swedish series were >= 50 years at epilepsy surgery. Seizure outcome was as good for older as for younger adults, and there was no difference in the occurrence of major complications. This constitutes important information in the presurgical counselling process.  

  • 3.
    Dagiasi, Loanna
    et al.
    Univ Gothenburg, Sahlgrenska Acad, Dept Clin Neurosci, Gothenburg, Sweden;NAL Hosp Trollhattan, Trollhattan, Sweden.
    Vall, Victor
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Neurology.
    Kumlien, Eva
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Neurology.
    Burman, Joachim
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Neurology.
    Zelano, Johan
    Univ Gothenburg, Sahlgrenska Acad, Dept Clin Neurosci, Gothenburg, Sweden;Sahlgrens Univ Hosp, Gothenburg, Sweden.
    Treatment of epilepsy in multiple sclerosis2018In: Seizure, ISSN 1059-1311, E-ISSN 1532-2688, Vol. 58, p. 47-51Article in journal (Refereed)
    Abstract [en]

    Purpose: The prevalence of epilepsy is increased in multiple sclerosis (MS), but information on AED treatment and seizure outcome is scarce. We describe epilepsy characteristics including the use of AEDs and proportion of seizure-free patients at two tertiary hospitals in Sweden. Method: We retrospectively studied electronic medical records of all patients with a diagnosis of MS and seizures at Sahlgrenska university hospital and Uppsala university hospital. Clinical data were reviewed until 2017. Results: We identified a total of 62 MS patients with at least one seizure. Median age at the first seizure (before or after MS) was 41 years (range 0-80). The most common MS disease course at the first seizure was secondary progressive MS, the neurological disability was considerable, and most patients had several MRI lesions at their first seizure. The first EEG demonstrated epileptiform discharges in 38% and unspecific pathology in 40%. Current seizure status could be determined for 37 patients. Out of these, 46% had been seizure free for more than one year at last follow-up. The majority of patients (65%) were on monotherapy at last follow-up. Carbamazepine was the most commonly used first AED, with a retention rate of 52%. No individual AED was associated with a particularly high rate of seizure freedom. The most common reason for discontinuation of the first AED was side-effects. Conclusion: Seizure freedom rates were low, perhaps indicating a need for higher ambitions in management. Side effects of AEDs may be a particular concern when treating epilepsy in patients with MS.

  • 4.
    Halawa, Imad
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Neurology.
    Zelano, Johan
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Neurology.
    Kumlien, Eva
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Neurology.
    Hypoglycemia and risk of seizures: A retrospective cross-sectional study2015In: Seizure, ISSN 1059-1311, E-ISSN 1532-2688, Vol. 25, p. 147-149Article in journal (Refereed)
    Abstract [en]

    Purpose: Few studies have been dedicated to assess neurological symptoms in relations to hypoglycemia. In this study we investigated the association between different levels of hypoglycemia and the occurrence of epileptic seizures in patients without a prior diagnosis of epilepsy. Method: A retrospective cross-sectional study. Results: We identified 388 individuals from a laboratory database in Swedish regional hospital who had been found to have a glucose value of <= 3.5 mM between January and December 2009. Medical records were reviewed. Hypoglycemia was defined at three different categories: 0-2 mM (40 patients), 2.1-3 mM (154 patients) and 3.1-3.5 mM (194 patients). 14 patients had disturbance of consciousness including 3 with seizures. The majority of cases had coma, a generalized tonic-clonic seizure was seen only when s-glucose dropped below 2.0 mM. Two cases with focal seizure were noted, one at s-glucose 2.0 mM, and one at s-glucose 3.3 mM. The absolute risks (95% confidence interval) for having major neurological symptoms at glucose levels of <= 2.0 mM were 0.25 (0.13-0.41), 0.02 (0-0.06) at 2.1-3.0 mM and 0.01 (0-0.03) at 3.1-3.5 mM. Conclusion: Coma is the most common neurological symptom related to hypoglycemia. Epileptic seizures are rare and not as common as previously assumed. 

  • 5.
    Kumlien, Eva
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience.
    Lundberg, Per Olov
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience.
    Seizure risk associated with neuroactive drugs: Data from the WHO adverse drug reactions database2010In: Seizure, ISSN 1059-1311, E-ISSN 1532-2688, Vol. 19, no 2, p. 69-73Article in journal (Refereed)
    Abstract [en]

    PURPOSE: To explore the association between the use of neuroactive drugs and reports of epileptic seizures. MATERIAL: Using the WHO adverse drug reactions (ADR) database, VigiBase, we surveyed reports of suspected seizures from 1968 until February 2006. Case reports of ADRs, that were classified as convulsions were collected and compared to the total number of ADRs reported. RESULTS: The total number of ADRs was 7,375,325. The number of convulsive events was 71,471. The ratio of convulsive ADRs to the total number of ADRs reported for each drug was evaluated and expressed as a percentage. The 10 drugs most frequently associated with convulsive ADRs were maprotilene (14.42%), escitaloprame (9.78%), buproprione (9.49%), clozapine (9.0%), chlorprothiexene (8.89%), amoxapine (8.74%), donepezil (8.40%), rivastigmine (6.41%), quetiapine (5.90%) and trimipramine (5.69%). CONCLUSIONS: Based on the reports in VigiBase, ADR reports relating to antidepressants, antipsychotic and cholinomimetic drugs included seizures more often than other neuroactive drugs.

  • 6.
    Kumlien, Eva
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience.
    Mattsson, Peter
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience.
    Attitudes towards epilepsy surgery: A nationwide survey among Swedish neurologists2010In: Seizure, ISSN 1059-1311, E-ISSN 1532-2688, Vol. 19, no 4, p. 253-255Article in journal (Refereed)
    Abstract [en]

    Purpose: Epilepsy surgery is safe and effective for epilepsy that is refractory to medical treatment. However, only a minority of candidates for epilepsy surgery are referred for surgical evaluation. We investigated Swedish neurologists' views on and criteria for referral for epilepsy surgery. Materials and methods: A survey was sent out to neurologists who treat patients with epilepsy. We received responses from 81% of referring hospitals and 57% of private practices. Results: Sixty-one percent of respondents considered that epilepsy surgery reduced seizure frequency and 53% that it improved quality of life. Surgical treatment was thought to be cost-effective by 90% of respondents. Referral for surgery was considered if three or more antiepileptic drugs had failed. Seizure frequency and severity and, the patient's own wishes were regarded as the most important criteria for surgical referral. MRI and EEG findings were also important whereas duration of illness was considered less important. Age below 65 years and lack of mental retardation were important for considering referral. Conclusion: In general Swedish neurologists have a cautious but positive attitude towards epilepsy surgery. Uncertainties about eligibility criteria among referring clinicians may contribute to the underutilization of epilepsy surgery.

  • 7.
    Larsson, David
    et al.
    Univ Gothenburg, Sahlgrenska Acad, Dept Clin Neurosci, Gothenburg, Sweden; Sahlgrens Univ Hosp, Gothenburg, Sweden.
    Åsberg, Signild
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Clinical Epidemiology.
    Kumlien, Eva
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Neurology.
    Zelano, Johan
    Univ Gothenburg, Sahlgrenska Acad, Dept Clin Neurosci, Gothenburg, Sweden; Sahlgrens Univ Hosp, Gothenburg, Sweden.
    Retention rate of first antiepileptic drug in poststroke epilepsy: A nationwide study2019In: Seizure, ISSN 1059-1311, E-ISSN 1532-2688, Vol. 64, p. 29-33Article in journal (Refereed)
    Abstract [en]

    Purpose: To describe the retention rates of first antiepileptic drugs (AEDs) in patients with poststroke epilepsy on a nationwide scale.

    Methods: The Swedish Stroke Register, which has 94% coverage and high-resolution data on stroke, comorbidities, and disability, was cross-referenced to the National Patient Register, Drug Register, and Cause-of-Death Register. Patients with onset of AED-treated epilepsy after stroke in 2005–2010 were included. An algorithm based on prescription renewal intervals was used to analyze treatment data until the end of 2014.

    Results: A total of 4991 patients were included. First AEDs analyzed were carbamazepine (n = 2373), valproic acid (n = 943), levetiracetam (n = 555), lamotrigine (n = 519), phenytoin (n = 176), and oxcarbazepine (n = 89). The five-year retention rate was highest for lamotrigine (75%, 95%CI:70.4–79.4), followed by levetiracetam (69%, 95%CI:62.9–74.3), oxcarbazepine (68%, 95%CI:55.2–79.8), valproic acid (62%, 95%CI:57.8–66.4), carbamazepine (60%, 95%CI:57.6–62.4), and phenytoin (55%, 95%CI:45.2–64.0). There were minor differences in baseline characteristics with low levels of disability being slightly more common in patients treated with lamotrigine and levetiracetam. Atrial fibrillation and hypertension were more common in patients treated with levetiracetam, and atrial fibrillation was less common in patients treated with carbamazepine. In a Cox model adjusted for baseline characteristics, the risk of discontinuation was lower for lamotrigine (HR 0.53, 95%CI:0.43-0.67) and levetiracetam (HR 0.75, 95%CI:0.60-0.94) when compared to carbamazepine.

    Conclusions: Lamotrigine and levetiracetam have higher retention rates than carbamazepine in poststroke epilepsy. This is in agreement with existing small RCTs in this patient group.

  • 8.
    Rauramaa, Tuomas
    et al.
    Univ Eastern Finland, Inst Clin Med, Unit Pathol, Kuopio, Finland;Kuopio Univ Hosp, Dept Pathol, POB 1777, FIN-70211 Kuopio, Finland.
    Saxlin, Anna
    Tampere Univ Hosp, Dept Pathol, Fimlab Labs, Tampere, Finland.
    Lohvansuu, Kaisa
    Univ Jyvaskyla, Ctr Interdisciplinary Brain Res, Jyvaskyla, Finland;Univ Jyvaskyla, Dept Psychol, Jyvaskyla, Finland.
    Alafuzoff, Irina
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Clinical and experimental pathology.
    Pitkanen, Asla
    Univ Eastern Finland, AI Virtanen Inst Mol Sci, Kuopio, Finland.
    Soininen, Hilkka
    Univ Eastern Finland, Sch Med, Dept Neurol, Kuopio, Finland.
    Epilepsy in neuropathologically verified Alzheimer's disease2018In: Seizure, ISSN 1059-1311, E-ISSN 1532-2688, Vol. 58, p. 9-12Article in journal (Refereed)
    Abstract [en]

    Purpose: Subjects with Alzheimer's disease (AD) have been shown to be at a higher risk for epilepsy. The vast majority of the previous studies have not included a full neuropathological examination. Methods: The objective of this study was to assess the prevalence of epilepsy and clinicopathological characteristics in a well-defined study group of 64 subjects with AD. We evaluated the clinicopathological findings in 64 subjects (mean age at death 85 +/- 8.6 years) from a longitudi-nal study cohort of patients with dementia. Results: Eleven out of the 64 subjects (17%) had a history of epilepsy, which is comparable to previous studies. The subjects with AD and epilepsy were significantly younger at the time of AD diagnosis and at the time of hospitalisation. In addition, their duration of AD was longer. Concomitant neuropathology in addition to AD was common in both groups and the ApoE genotypes did not differ significantly between the groups. Conclusion: The strength of this study is a thorough neuropathological examination of all study subjects. Our findings support the previous literature regarding the prevalence of epilepsy in subjects with AD. We have shown that the subjects with AD and epilepsy differ significantly from the subjects without epilepsy.

  • 9.
    Weber, Johan
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Landtblom: Neurology.
    Gustafsson, Cecilia
    Univ Gothenburg, Sahlgrenska Acad, Inst Neurosci & Physiol, Dept Clin Neurosci, Gothenburg, Sweden;Sahlgrens Univ Hosp, Gothenburg, Sweden.
    Malmgren, Kristina
    Univ Gothenburg, Sahlgrenska Acad, Inst Neurosci & Physiol, Dept Clin Neurosci, Gothenburg, Sweden;Sahlgrens Univ Hosp, Gothenburg, Sweden.
    Strandberg, Moa
    Lund Univ Hosp, Dept Clin Sci, Dept Neurol, Lund, Sweden.
    Can, Umran
    Lund Univ Hosp, Dept Clin Sci, Dept Neurol, Lund, Sweden.
    Strandberg, Maria Compagno
    Lund Univ Hosp, Dept Clin Sci, Dept Neurol, Lund, Sweden.
    Kumlien, Eva
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Landtblom: Neurology.
    Evaluation for epilepsy surgery - Why do patients not proceed to operation?2019In: Seizure, ISSN 1059-1311, E-ISSN 1532-2688, Vol. 69, p. 241-244Article in journal (Refereed)
    Abstract [en]

    Purpose: To investigate the reasons for not proceeding to surgery in patients undergoing presurgical evaluation for epilepsy. Methods: A retrospective cohort study of 401 consecutive patients who were evaluated for but did not proceed to surgery for epilepsy between 1990 and 2016 at three Swedish epilepsy surgery centers was performed. Reasons for not proceeding to surgery were categorized as inconclusive investigation, seizure onset within eloquent cortex, evidence of multiple seizure foci, infrequent seizures, risk of postoperative severe cognitive decline, patient or caregiver declining surgery or invasive investigation, severe psychiatric or somatic comorbidity, patient death during evaluation and complications during the evaluation. Chi-square tests were performed to compare ordered categorical variables. Results: During the entire time period the main reasons for rejection were inconclusive investigation (34,4%) and multifocal seizure onset (20,0%). The risk for severe cognitive decline postoperatively was more often a cause for rejection in more recent years. Patients declining invasive EEG or surgery accounted for a minor but not insignificant proportion (14,2%) of rejections. Conclusions: Inconclusive results from the presurgical evaluation and multifocal epilepsy were the main causes for not proceeding to surgery. The proportion of patients opting to abstain from surgery was low compared to other recent studies.

  • 10. Zanello, Marc
    et al.
    Meyer, Bernhard
    Still, Megan
    Goodden, John R
    Colle, Henry
    Schichor, Christian
    Bello, Lorenzo
    Wager, Michel
    Smits, Anja
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Neurology.
    Rydenhag, Bertil
    Tate, Matthew
    Metellus, Philippe
    Hamer, Philip De Witt
    Spena, Giannantonio
    Capelle, Laurent
    Mandonnet, Emmanuel
    Robles, Santiago Gil
    Sarubbo, Silvio
    Martino González, Juan
    Fontaine, Denys
    Reyns, Nicolas
    Krieg, Sandro M
    Huberfeld, Gilles
    Wostrack, Maria
    Colle, David
    Robert, Erik
    Noens, Bonny
    Muller, Peter
    Yusupov, Natan
    Rossi, Marco
    Conti Nibali, Marco
    Papagno, Costanza
    Visser, Victoria
    Baaijen, Hans
    Galbarritu, Lara
    Chioffi, Franco
    Bucheli, Carlos
    Roux, Alexandre
    Dezamis, Edouard
    Duffau, Hugues
    Pallud, Johan
    Surgical resection of cavernous angioma located within eloquent brain areas: International survey of the practical management among 19 specialized centers.2019In: Seizure, ISSN 1059-1311, E-ISSN 1532-2688, Vol. 69, p. 31-40, article id S1059-1311(18)30815-XArticle in journal (Refereed)
    Abstract [en]

    PURPOSE: The practical management of cavernous angioma located within eloquent brain area before, during and after surgical resection is poorly documented. We assessed the practical pre-operative, intra-operative, and post-operative management of cavernous angioma located within eloquent brain area.

    METHOD: An online survey composed of 61 items was sent to 26 centers to establish a multicenter international retrospective cohort of adult patients who underwent a surgical resection as the first-line treatment of a supratentorial cavernous angioma located within or close to eloquent brain area.

    RESULTS: 272 patients from 19 centers (mean 13.6 ± 16.7 per center) from eight countries were included. The pre-operative management varied significantly between centers and countries regarding the pre-operative functional assessment, the pre-operative epileptological assessment, the first given antiepileptic drug, and the time to surgery. The intra-operative environment varied significantly between centers and countries regarding the use of imaging systems, the use of functional mapping with direct electrostimulations, the extent of resection of the hemosiderin rim, the realization of a post-operative functional assessment, and the time to post-operative functional assessment. The present survey found a post-operative improvement, as compared to pre-operative evaluations, of the functional status, the ability to work, and the seizure control.

    CONCLUSIONS: We observed a variety of practice between centers and countries regarding the management of cavernous angioma located within eloquent regions. Multicentric prospective studies are required to solve relevant questions regarding the management of cavernous angioma-related seizures, the timing of surgery, and the optimal extent of hemosiderin rim resection.

  • 11.
    Zelano, Johan
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Neurology.
    Kumlien, Eva
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Neurology.
    Levetiracetam as alternative stage two antiepileptic drug in status epilepticus: A systematic review2012In: Seizure, ISSN 1059-1311, E-ISSN 1532-2688, Vol. 21, no 4, p. 233-236Article, review/survey (Refereed)
    Abstract [en]

    Background: The role of new antiepileptic drugs (AED) in the treatment of status epilepticus (SE) is of interest, especially in benzodiazepine-resistant status epilepticus where phenytoin is deemed inappropriate due to allergy or comorbidity. Levetiracetam (LEV) is a new AED with few side effects. It is easy to administer. Reports exist of its use in SE in adults.

    Aims: To clarify the evidence for use of LEV as an alternative stage two AED in treatment of SE by a systematic review of the literature.

    Method: An online MEDLINE search identified 118 articles. The abstracts were screened for studies written in English, in which (1) at least two adults had been treated, and (2) LEV had been administered intravenously as the first AED, on its own or together with benzodiazepines. Ten studies were included.

    Results: Out of the ten studies, seven were retrospective observational, two prospective observational, and one prospective randomized. The studies described a total of 334 patients. The most common reason for administrating LEV was that standard treatment was deemed inappropriate. The efficacy ranged from 44% to 94%, with higher efficacy reported in the retrospective studies.

    Conclusions: The evidence for use of LEV as an alternative stage two AED in SE is limited. The higher efficacy reported in retrospective studies indicates possible publication bias, and caution is advised when the results of these retrospective studies are considered in clinical decision-making.

  • 12.
    Zelano, Johan
    et al.
    Univ Gothenburg, Sahlgrenska Univ Hosp, Dept Neurol, Gothenburg, Sweden.;Univ Gothenburg, Sahlgrenska Acad, Gothenburg, Sweden..
    Larsson, David
    Univ Gothenburg, Sahlgrenska Univ Hosp, Dept Neurol, Gothenburg, Sweden.;Univ Gothenburg, Sahlgrenska Acad, Gothenburg, Sweden..
    Kumlien, Eva
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Neurology.
    Åsberg, Signild
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Cardiovascular epidemiology.
    Pre-stroke seizures: A nationwide register-based investigation2017In: Seizure, ISSN 1059-1311, E-ISSN 1532-2688, Vol. 49, p. 25-29Article in journal (Refereed)
    Abstract [en]

    Purpose: The relationship between cerebroyascular disease and seizures is clearly illustrated by poststroke epilepsy. Seizures can also be the first manifestation of cerebrovascular disease and case control studies have demonstrated that seizures carry an increased risk of subsequent stroke. Thus, seizures could serve as a marker for vascular risk that merits intervention, but more data is needed before proper trials can be conducted. The occurrence of pre-stroke seizures has not been assessed on a national scale. We asked what proportion of strokes in middle-aged and elderly patients was preceded by seizures. Methods: All patients over 60 years of age with first-ever stroke in 2005-2010 (n = 92,596) were identified in the Swedish stroke register (Riksstroke) and cross-sectional data on a history of a first seizure or epilepsy diagnosis in the ten years preceding stroke were collected from national patient registers with mandatory reporting. Results: 1372 patients (1.48%) had a first seizure or epilepsy diagnosis registered less than ten years prior to the index stroke. The mean latency between seizure and stroke was 1474 days (SD 1029 days). Conclusions: Seizures or epilepsy preceded 1.48% of strokes in patients > 60 years of age. Based on recent national incidence figures, 5-20% of incident cases of seizures or epilepsy after 60 years of age could herald stroke, depending on age group. These proportions are of a magnitude that merit further study on how to reduce the risk of stroke in patients with late-onset seizures or epilepsy.

  • 13.
    Zelano, Johan
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Neurology.
    Moller, Fredrik
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Neurology.
    Dobesberger, Judith
    Trinka, Eugen
    Kumlien, Eva
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Neurology.
    Infections in status epilepticus: A retrospective 5-year cohort study2014In: Seizure, ISSN 1059-1311, E-ISSN 1532-2688, Vol. 23, no 8, p. 603-606Article in journal (Refereed)
    Abstract [en]

    Purpose: Status epilepticus (SE) has attracted renewed interest lately, and efforts are made to optimize every treatment stage. For refractory SE, optimal supporting care involves mechanical ventilation and intensive care unit (ICU) admission. Infections often complicate SE and recently a single-centre observational study demonstrated an association between infections and poor short-term outcome of SE in a cohort of severely ill patients. We have here attempted to replicate those findings in a different cohort. Method: We performed a retrospective observational study and included all patients with a diagnosis of SE during 2008-2012 at a Swedish tertiary referral centre. Results: The cohort consisted of 103 patients (53% female, 47% male, median age 62 years, range 19-87 years). In house mortality was less than 2 and 70% of the patients' were discharged home. The most common aetiologies of SE were uncontrolled epilepsy (37%) and brain tumours (16%). A total of 39 patients suffered infections during their stay. Presence of infection was associated with mechanical ventilation (OR 3.344, 95% Cl 1.44-7.79) as well as not being discharged home (OR2.705, 95% Cl 1.14-6.44), and duration of SE was significantly longer in patients with infection (median 1 day vs. 2.5 days, p < 0.001). Conclusion: We conclude that the previously described association between infections, a longer SE duration, and an unfavourable outcome of SE seems valid also in SE of less severe aetiology.  

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