• Admission C – reactive protein after acute ischemic stroke is associated with stroke severity and mortality: The 'Bergen stroke study' 

      Idicula, Titto T.; Brøgger, Jan C.; Næss, Halvor; Waje-Andreassen, Ulrike; Thomassen, Lars (Peer reviewed; Journal article, 2009-04-28)
      Background: There is growing evidence that inflammation plays an important role in atherogenesis. Previous studies show that C-reactive protein (CRP), an inflammatory marker, is associated with stroke outcomes and future ...
    • Age dependency of ischaemic stroke subtypes and vascular risk factors in western Norway: The Bergen Norwegian Stroke Cooperation Study 

      Nacu, Aliona; Fromm, Annette; Sand, Kristin Modalsli; Waje-Andreassen, Ulrike; Thomassen, Lars; Næss, Halvor (Peer reviewed; Journal article, 2016-03)
      Objectives: Age dependency of acute ischaemic stroke aetiology and vascular risk factors have not been adequately evaluated in stroke patients in Norway. Aims of this study were to evaluate how stroke subtypes and vascular ...
    • Biomarkers related to carotid intima-media thickness and plaques in long-term survivors of ischemic stroke 

      Waje-Andreassen, Ulrike; Næss, Halvor; Thomassen, Lars; Marøy, Tove Helene; Mazengia, Kibret Yimer; Eide, Geir Egil; Vedeler, Christian A. (Peer reviewed; Journal article, 2015-05-08)
      Lifestyle risk factors, inflammation and genetics play a role in the development of atherosclerosis. We therefore studied Fc gamma receptor (FcγR) polymorphisms, interleukin (IL)-10 polymorphisms and other biomarkers related ...
    • Can the cardiovascular family history reported by our patients be trusted? The Norwegian Stroke in the Young Study 

      Øygarden, Halvor; Fromm, Annette; Sand, Kristin Modalsli; Eide, Geir Egil; Thomassen, Lars; Næss, Halvor; Waje-Andreassen, Ulrike (Peer reviewed; Journal article, 2016-01)
      Background and purpose: Family history (FH) is used as a marker for inherited risk. Using FH for this purpose requires the FH to reflect true disease in the family. The aim was to analyse the concordance between young and ...
    • Cancer-Associated stroke: The Bergen NORSTROKE Study 

      Selvik, Henriette Aurora; Thomassen, Lars; Bjerkreim, Anna Therese; Næss, Halvor (Peer reviewed; Journal article, 2015-10-13)
      Background: Underlying malignancy can cause ischemic stroke in some patients. Mechanisms include the affection of the coagulation cascade, tumor mucin secretion, infections and nonbacterial endocarditis. The release of ...
    • Clinical manifestation of acute cerebral infarcts in multiple arterial territories 

      Novotny, Vojtech; Aarli, Sander Johan; Netland Khanevski, Andrej; Bjerkreim, Anna Therese; Kvistad, Christopher Elnan; Fromm, Annette; Waje-Andreassen, Ulrike; Naess, Halvor; Thomassen, Lars; Logallo, Nicola (Journal article; Peer reviewed, 2021)
      Objectives: We aimed to assess frequencies and radiological aspects of single- and multiterritory clinical manifestation among patients with acute cerebral infarcts in multiple arterial territories (MACI). Materials & ...
    • Comparing withdrawal and non-withdrawal of life-sustaining treatment among patients who died from stroke 

      Helvig, Eirik; Thomassen, Lars; Waje-Andreassen, Ulrike; Næss, Halvor (Peer reviewed; Journal article, 2015)
      Background: In severe stroke, a decision to withdraw life-sustaining treatment is sometimes made in cooperation with the family. The aim of this study was to study the time from withdrawing life-sustaining treatment to ...
    • Comparison between Ischemic Stroke Patients <50 Years and ≥50 Years Admitted to a Single Centre: The Bergen Stroke Study 

      Fromm, Annette; Waje-Andreassen, Ulrike; Thomassen, Lars; Næss, Halvor (Peer reviewed; Journal article, 2011)
      Introduction: Young adults are likely to differ from old patients concerning cerebral infarction. Methods: We compared characteristics of patients aged under and above 50 years, admitted to the Department of Neurology with ...
    • Continuous Local Intra-Arterial Nimodipine for the Treatment of Cerebral Vasospasm 

      Logallo, Nicola; Bøthun, Marianne Lundervik; Guttormsen, Anne Berit; Holmaas, Gunhild; Kråkenes, Jostein; Thomassen, Lars; Svendsen, Frode; Helland, Christian Andre (Peer reviewed; Journal article, 2015)
      Vasospasm (VSP) is one of the major causes for prolonged neurologic deficit in patients with aneurysmal subarachnoid hemorrhage. Few case series have reported about continuous local intra-arterial nimodipine administration ...
    • The Course of Carotid Plaque Vulnerability Assessed by Advanced Neurosonology 

      Aarli, Sander Johan; Thomassen, Lars; Waje-Andreassen, Ulrike; Logallo, Nicola; Kvistad, Christopher Elnan; Næss, Halvor; Fromm, Annette (Journal article; Peer reviewed, 2021-08-20)
      Background: Carotid artery atherosclerosis is a major risk factor for ischemic stroke. This risk is related to plaque vulnerability and is characterized by plaque morphology, intraplaque neovascularization, and cerebral ...
    • Does a history of migraine affect the rate of thrombolysis in young stroke patients? 

      Øygarden, Halvor; Kvistad, Christopher Elnan; Thomassen, Lars; Waje-Andreassen, Ulrike; Næss, Halvor (Peer reviewed; Journal article, 2013)
      Background. Migraine is prevalent in young patients and a frequent stroke mimic. To distinguish stroke mimics from true stroke can be difficult, and there is a possibility of misdiagnosing a stroke as a migrainous attack ...
    • Early neurological worsening in acute ischaemic stroke patients 

      Nacu, Aliona; Bringeland, Gerd Haga; Khanevski, Andrej; Thomassen, Lars; Waje-Andreassen, Ulrike; Næss, Halvor (Peer reviewed; Journal article, 2016-01)
      Objectives: Neurological worsening in acute ischaemic stroke patients is common with significant morbidity and mortality. Aims: To determine the factors associated with early neurological worsening within the first 9 h ...
    • A family history of stroke is associated with increased intima-media thickness in young ischemic Stroke - The norwegian stroke in the young study (NOR-SYS) 

      Øygarden, Halvor; Fromm, Annette; Sand, Kristin Modalsli; Kvistad, Christopher Elnan; Eide, Geir Egil; Thomassen, Lars; Næss, Halvor; Waje-Andreassen, Ulrike (Peer reviewed; Journal article, 2016-08-09)
      Background and Purpose: Positive family history (FH+) of cardiovascular disease (CVD) is a risk factor for own CVD. We aimed to analyze the effect of different types of FH (stroke, coronary heart disease (CHD), peripheral ...
    • The impact of ischaemic stroke subtype on 30-day hospital readmissions 

      Bjerkreim, Anna Therese; Khanevski, Andrej; Selvik, Henriette Aurora; Waje-Andreassen, Ulrike; Thomassen, Lars; Næss, Halvor; Logallo, Nicola (Peer reviewed; Journal article, 2018-12-03)
      Background. Stroke aetiologymay affect the risk and causes of readmission after ischaemic stroke (IS) and transient ischaemic attack (TIA) due to differences in risk factors, functional outcome, and treatment.We aimed to ...
    • Impaired cerebrovascular reactivity may predict delayed cerebral ischemia after aneurysmal subarachnoid hemorrhage 

      Bøthun, Marianne Lundervik; Haaland, Øystein Ariansen; Moen, Gunnar; Logallo, Nicola; Svendsen, Frode; Thomassen, Lars; Helland, Christian Andre (Peer reviewed; Journal article, 2019)
      Introduction: Delayed cerebral ischemia (DCI) is a major cause of disability and death after aneurysmal subarachnoid hemorrhage. The literature suggests that impaired cerebrovascular reactivity (CVR) may be a predictor for ...
    • Microemboli-monitoring during the acute phase of ischemic stroke: Is it worth the time? 

      Idicula, Titto T.; Næss, Halvor; Thomassen, Lars (Peer reviewed; Journal article, 2010-09-10)
      Background The prevalence of microembolic signals (MES) during the acute phase of ischemic stroke and its influence on outcome is not well studied. The aim of our study was to determine the prevalence of MES, the different ...
    • NOR-SASS (Norwegian Sonothrombolysis in Acute Stroke Study): Randomized controlled contrast-enhanced sonothrombolysis in an unselected acute ischemic stroke population 

      Nacu, Aliona; Kvistad, Christopher Elnan; Næss, Halvor; Øygarden, Halvor; Logallo, Nicola; Assmus, Jörg; Waje-Andreassen, Ulrike; Kurz, Kathinka Dæhli; Neckelmann, Gesche F; Thomassen, Lars (Peer reviewed; Journal article, 2016-02)
      Background and Purpose—The NOR-SASS (Norwegian Sonothrombolysis in Acute Stroke Study) aimed to assess effect and safety of contrast-enhanced ultrasound treatment in an unselected acute ischemic stroke population. ...
    • The Norwegian Stroke in the Young Study (NOR-SYS): rationale and design 

      Fromm, Annette; Thomassen, Lars; Næss, Halvor; Meijer, Rudy; Eide, Geir Egil; Kråkenes, Jostein; Vedeler, Christian A.; Gerdts, Eva; Larsen, Terje H.; Kuiper, Karel Kier-Jan; Laxdal, Elin Hanna; Russell, David; Tatlisumak, Turgut; Waje-Andreassen, Ulrike (Peer reviewed; Journal article, 2013-07-17)
      Background: Ischemic stroke in young adults is a major health problem being associated with a higher vascular morbidity and mortality compared to controls, and a stroke recurrence rate of 25% during the first decade. The ...
    • The Norwegian tenecteplase stroke trial (NOR-TEST): randomised controlled trial of tenecteplase vs. alteplase in acute ischaemic stroke 

      Logallo, Nicola; Kvistad, Christopher Elnan; Nacu, Aliona; Næss, Halvor; Waje-Andreassen, Ulrike; Asmuss, Jörg; Aamodt, Anne Hege; Lund, Christian; Kurz, Martin; Rønning, Ole Morten; Salvesen, Rolf; Idicula, Titto T.; Thomassen, Lars (Peer reviewed; Journal article, 2014-05-15)
      Background: Alteplase is the only approved thrombolytic agent for acute ischaemic stroke. The overall benefit from alteplase is substantial, but some evidence indicates that alteplase also has negative effects on the ...
    • One-year versus five-year hospital readmission after ischemic stroke and TIA 

      Bjerkreim, Anna Therese; Næss, Halvor; Khanevski, Andrej; Thomassen, Lars; Waje-Andreassen, Ulrike; Logallo, Nicola (Peer reviewed; Journal article, 2019-01-29)
      Background: The burden of hospital readmission after stroke is substantial, but little knowledge exists on factors associated with long-term readmission after stroke. In a cohort comprising patients with ischemic stroke ...