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Lars Thomassen

Guest Researcher
  • E-maillars.thomassen@uib.no
  • Visitor Address
    Haukeland Universitetssykehus Laboratoriebygget, 7. etg. Heis øst
    5009 Bergen
  • Postal Address
    Postboks 7804
    5020 Bergen
Academic article
  • Show author(s) (2022). Vascular risk factors and staging of atherosclerosis in patients and controls: The Norwegian Stroke in the Young Study. European Stroke Journal. 289-298.
  • Show author(s) (2022). Tenecteplase versus alteplase for the management of acute ischaemic stroke in Norway (NOR-TEST 2, part A): a phase 3, randomised, open-label, blinded endpoint, non-inferiority trial. Lancet Neurology. 511-519.
  • Show author(s) (2021). The Course of Carotid Plaque Vulnerability Assessed by Advanced Neurosonology. Frontiers in Neurology. 1-7.
  • Show author(s) (2021). Sonothrombolysis in patients with acute ischemic stroke with large vessel occlusion: An individual patient data meta-analysis. Stroke. 3786-3795.
  • Show author(s) (2021). Prevalence of atherosclerosis and association with 5-year outcome: The Norwegian Stroke in the Young Study. European Stroke Journal. 374-384.
  • Show author(s) (2021). Clinical manifestation of acute cerebral infarcts in multiple arterial territories. Brain and Behavior. 1-7.
  • Show author(s) (2020). Vision-related quality of life in patients with occipital stroke. Acta Neurologica Scandinavica. 509-518.
  • Show author(s) (2020). Tenecteplase versus alteplase after acute ischemic stroke at high age. International Journal of Stroke. 5 pages.
  • Show author(s) (2020). Clinical outcomes and safety profile of Tenecteplase in wake-up stroke. Acta Neurologica Scandinavica. 1-5.
  • Show author(s) (2019). Young ischaemic stroke incidence and demographic characteristics - The Norwegian stroke in the young study - A three-generation research program. European Stroke Journal. 347-354.
  • Show author(s) (2019). U-shaped relationship between hemoglobin level and severity of ischemic stroke. Acta Neurologica Scandinavica. 56-61.
  • Show author(s) (2019). Tenecteplase versus alteplase between 3 and 4.5 hours in low national institutes of health stroke scale. Stroke. 498-500.
  • Show author(s) (2019). Short-term outcome and in-hospital complications after acute cerebral infarcts in multiple arterial territories. Stroke. 3625-3627.
  • Show author(s) (2019). Safety and Outcomes of Tenecteplase in Moderate and Severe Ischemic Stroke. Stroke. 1279-1281.
  • Show author(s) (2019). Recurrent ischemic stroke: Incidence, predictors, and impact on mortality. Acta Neurologica Scandinavica. 3-8.
  • Show author(s) (2019). Persistent microembolic signals in the cerebral circulation on transcranial Doppler after intravenous sulfur hexafluoride microbubble infusion. Journal of Neuroimaging (JON). 1-4.
  • Show author(s) (2019). One-year versus five-year hospital readmission after ischemic stroke and TIA. BMC Neurology. 1-8.
  • Show author(s) (2019). Incidence and etiologies of stroke mimics after incident stroke or transient ischemic attack. Stroke. 2937-2940.
  • Show author(s) (2019). Impaired cerebrovascular reactivity may predict delayed cerebral ischemia after aneurysmal subarachnoid hemorrhage. Journal of the Neurological Sciences. 1-10.
  • Show author(s) (2019). Five-year readmission and mortality differ by ischemic stroke subtype. Journal of the Neurological Sciences. 31-37.
  • Show author(s) (2018). When to screen ischaemic stroke patients for cancer. Cerebrovascular Diseases. 42-47.
  • Show author(s) (2018). Visual field defect after ischemic stroke - impact on mortality. Acta Neurologica Scandinavica. 293-298.
  • Show author(s) (2018). Visual field defect after ischemic stroke - impact on mortality. Acta Neurologica Scandinavica. 293-298.
  • Show author(s) (2018). Time course of cerebrovascular reactivity in patients treated for unruptured intracranial aneurysms: A one-year transcranial Doppler and acetazolamide follow-up study. BioMed Research International. 1-9.
  • Show author(s) (2018). Thirty-day recurrence after ischemic stroke or TIA. Brain and Behavior. 1-6.
  • Show author(s) (2018). Thirty-day readmission after spontaneous intracerebral hemorrhage. Brain and Behavior. 1-4.
  • Show author(s) (2018). The impact of ischaemic stroke subtype on 30-day hospital readmissions. Stroke Research and Treatment. 7 pages.
  • Show author(s) (2018). Safety and predictors of stroke mimics in The Norwegian Tenecteplase Stroke Trial (NOR-TEST). International Journal of Stroke. 1-9.
  • Show author(s) (2018). Hospital readmissions after spontaneous intracerebral hemorrhage in Southern Portugal. Clinical neurology and neurosurgery (Dutch-Flemish ed. Print). 144-148.
  • Show author(s) (2018). High risk of early neurological worsening of lacunar infarction. Acta Neurologica Scandinavica. 1-7.
  • Show author(s) (2017). Tenecteplase versus alteplase for management of acute ischaemic stroke (NOR-TEST): a phase 3, randomised, open-label, blinded endpoint trial. Lancet Neurology. 781-788.
  • Show author(s) (2017). Short-term outcome of spontaneous intracerebral hemorrhage in Algarve, Portugal: retrospective hospital-based study. Journal of Stroke & Cerebrovascular Diseases. 346-351.
  • Show author(s) (2017). Patent foramen ovale closure with GORE HELEX or CARDIOFORM Septal Occluder vs. antiplatelet therapy for reduction of recurrent stroke or new brain infarct in patients with prior cryptogenic stroke: Design of the randomized Gore REDUCE Clinical Study. International Journal of Stroke. 998-1004.
  • Show author(s) (2017). Patent foramen ovale closure or antiplatelet therapy for cryptogenic stroke. New England Journal of Medicine. 1033-1042.
  • Show author(s) (2017). Elevated body temperature in ischemic stroke associated with neurological improvement. Acta Neurologica Scandinavica. 414-418.
  • Show author(s) (2017). Contrast‐enhanced sonothrombolysis in acute ischemic stroke patients without intracranial large‐vessel occlusion. Acta Neurologica Scandinavica. 256-261.
  • Show author(s) (2017). Clinical importance of temporal bone features for the efficacy of contrast-enhanced sonothrombolysis: a retrospective analysis of the NOR-SASS Trial. Translational Stroke Research. 1-7.
  • Show author(s) (2017). Acute cerebral infarcts in multiple arterial territories associated with cardioembolism. Acta Neurologica Scandinavica. 346-351.
  • Show author(s) (2017). A score for paroxysmal atrial fibrillation in acute ischemic stroke. International Journal of Stroke. 496-502.
  • Show author(s) (2016). Vision problems in ischaemic stroke patients: effects on life quality and disability. European Journal of Neurology. 1-7.
  • Show author(s) (2016). U-curve relation between cholesterol and prior ischemic stroke. Brain and Behavior.
  • Show author(s) (2016). Time patterns in multiple acute cerebral infarcts. International Journal of Stroke.
  • Show author(s) (2016). Serial NIHSS scores in patients with acute cerebral infarction. Acta Neurologica Scandinavica. 415-420.
  • Show author(s) (2016). Recurrent ischemic stroke is associated with the burden of risk factors. Acta Neurologica Scandinavica. 289-294.
  • Show author(s) (2016). NOR-SASS (Norwegian Sonothrombolysis in Acute Stroke Study): Randomized controlled contrast-enhanced sonothrombolysis in an unselected acute ischemic stroke population. Stroke. 335-341.
  • Show author(s) (2016). Less thrombolysis in posterior circulation infarction—a necessary evil? Acta Neurologica Scandinavica. 546-552.
  • Show author(s) (2016). Hospital Readmission after Intracerebral Hemorrhage. Journal of Stroke & Cerebrovascular Diseases. 157-162.
  • Show author(s) (2016). Early neurological worsening in acute ischaemic stroke patients. Acta Neurologica Scandinavica. 25-29.
  • Show author(s) (2016). Cerebrovascular reactivity after treatment of unruptured intracranial aneurysms - a transcranial Doppler sonography and acetazolamide study. Journal of the Neurological Sciences. 97-103.
  • Show author(s) (2016). Can the cardiovascular family history reported by our patients be trusted? The Norwegian Stroke in the Young Study. European Journal of Neurology. 154-159.
  • Show author(s) (2016). Atherosclerosis in trial of org 10172 in acute stroke treatment subtypes among young and middle-aged stroke patients: The Norwegian stroke in the young study. Journal of Stroke & Cerebrovascular Diseases. 825-830.
  • Show author(s) (2016). Age dependency of ischaemic stroke subtypes and vascular risk factors in western Norway: The Bergen Norwegian Stroke Cooperation Study. Acta Neurologica Scandinavica. 202-207.
  • Show author(s) (2016). A stress-related explanation to the increased blood pressure and its course following ischemic stroke. Vascular Health and Risk Management. 435-442.
  • Show author(s) (2015). Therapeutic Potential of Tenecteplase in the Management of Acute Ischemic Stroke. CNS Drugs. 811-818.
  • Show author(s) (2015). Stroke patients' knowledge about cardiovascular family history - the Norwegian Stroke in the Young Study (NOR-SYS). BMC Neurology. 1-8.
  • Show author(s) (2015). Continuous Local Intra-Arterial Nimodipine for the Treatment of Cerebral Vasospasm. Journal of Neurological Surgery Reports. e75-78.
  • Show author(s) (2015). Comparing withdrawal and non-withdrawal of life-sustaining treatment among patients who died from stroke. Vascular Health and Risk Management. 507-510.
  • Show author(s) (2015). Causes and Predictors for Hospital Readmission after Ischemic Stroke. Journal of Stroke & Cerebrovascular Diseases. 2095-2101.
  • Show author(s) (2015). Cancer-Associated Stroke: The Bergen NORSTROKE Study. Cerebrovascular Diseases. 107-113.
  • Show author(s) (2015). A pragmatic approach to sonothrombolysis in acute ischaemic stroke: The Norwegian randomised controlled sonothrombolysis in acute stroke study (NOR-SASS). BMC Neurology. 12 pages.
  • Show author(s) (2014). The Norwegian tenecteplase stroke trial (NOR-TEST): Randomised controlled trial of tenecteplase vs. alteplase in acute ischaemic stroke. BMC Neurology.
  • Show author(s) (2014). Prior cancer in patients with ischemic stroke: The Bergen NORSTROKE Study. Journal of Stroke & Cerebrovascular Diseases. 919-925.
  • Show author(s) (2014). Prevalence of intracranial stenosis in a Norwegian ischemic stroke population. Journal of Stroke & Cerebrovascular Diseases. 1611-1615.
  • Show author(s) (2014). Mild stroke: Safety and outcome in patients receiving thrombolysis. Acta Neurologica Scandinavica. 37-40.
  • Show author(s) (2014). Is smoking associated with favourable outcome in tPA‐treated stroke patients? Acta Neurologica Scandinavica. 299-304.
  • Show author(s) (2014). Is higher body temperature beneficial in ischemic stroke patients with normal admission CT angiography of the cerebral arteries? Vascular Health and Risk Management. 49-54.
  • Show author(s) (2014). Effect of microbubble contrast on intracranial blood flow velocity assessed by transcranial Doppler. Journal of Ultrasound. 21-26.
  • Show author(s) (2014). Diffusion-weighted lesions in stroke patients with transient symptoms - Where are they located? Cerebrovascular Diseases. 219-225.
  • Show author(s) (2014). Diffusion-weighted lesions in acute ischaemic stroke patients with migraine. Acta Neurologica Scandinavica. 41-46.
  • Show author(s) (2014). Carotid intima-media thickness - a potential predictor for rupture risk of intracranial aneurysms. International Journal of Stroke. 866-872.
  • Show author(s) (2014). Body temperature and major neurological improvement in tPA-treated stroke patients. Acta Neurologica Scandinavica. 325-329.
  • Show author(s) (2014). A qualitative description of telemedicine for acute stroke care in Norway: technology is not the issue. BMC Health Services Research.
  • Show author(s) (2014). A dark Side of subcortical diffusion-weighted lesions? Characteristics, cause, and outcome in large subcortical infarction: The Bergen Norwegian Stroke Cooperation Study. Stroke. 2710-2716.
  • Show author(s) (2013). Visual impairment in stroke patients - a review. Acta Neurologica Scandinavica. 52-56.
  • Show author(s) (2013). The Norwegian stroke in the young study (NOR-SYS): rationale and design. BMC Neurology. 12 pages.
  • Show author(s) (2013). TPA for ischemic stroke in patients ≥80 years. Acta Neurologica Scandinavica. 309-315.
  • Show author(s) (2013). Safety of off-label stroke treatment with tissue plasminogen activator. Acta Neurologica Scandinavica. 48-53.
  • Show author(s) (2013). Persistent middle cerebral artery occlusion associated with lower body temperature on admission. Vascular Health and Risk Management. 297-302.
  • Show author(s) (2013). Ischaemic stroke at a young age is a serious event final results of a population-based long-term follow-up in Western Norway. European Journal of Neurology. 818-823.
  • Show author(s) (2013). European Stroke Organisation Recommendations to Establish a Stroke Unit and Stroke Center. Stroke. 828-840.
  • Show author(s) (2013). Etiology of first-ever ischaemic stroke in European young adults: the 15 cities young stroke study. European Journal of Neurology. 1431-1439.
  • Show author(s) (2013). Elevated Admission Blood Pressure and Stroke Severity in Acute Ischemic Stroke: The Bergen NORSTROKE Study. Cerebrovascular Diseases. 351-354.
  • Show author(s) (2013). Does a history of migraine affect the rate of thrombolysis in young stroke patients? Stroke Research and Treatment. 5 pages.
  • Show author(s) (2013). Clinical implications of increased use of MRI in TIA. Acta Neurologica Scandinavica. 32-38.
  • Show author(s) (2013). A vascular approach to mild amnestic cognitive impairment: a pilot study. Acta Neurologica Scandinavica, Supplementum. 73-76.
  • Show author(s) (2012). Non-arteritisk sentralarterieokklusjon (CRAO). Oftalmolog. 14-17.
  • Show author(s) (2012). Middle cerebral artery stenosis: transcranial color-coded sonography based on continuity equation versus CT-angiography. Ultraschall in der Medizin. E326-332.
  • Show author(s) (2012). Intracerebral hemorrhage in Southern Norway - a Hospital-based incidence study. European Neurology. 240-245.
  • Show author(s) (2012). Acute stroke centre - the changing focus of stroke unit care. The Bergen NORSTROKE Study. Acta Neurologica Scandinavica. 410-415.
  • Show author(s) (2011). Serum uri acid: neuroprotection in thrombolysis. The Bergen NORSTROKE study. BMC Neurology. 6 pages.
  • Show author(s) (2011). High Proportion of Lacunar Strokes at Night: The Bergen Stroke Study. Journal of Stroke & Cerebrovascular Diseases. 424-428.
  • Show author(s) (2011). En kvinne med tilbakevendende arteriovenøse tromboser. Tidsskrift for Den norske legeforening. 1303-1306.
  • Show author(s) (2011). Decline of arterial cerebral infarction among young women: the Bergen Stroke Study. Vascular Health and Risk Management. 81-84.
  • Show author(s) (2011). Comparison between Ischemic Stroke Patients <50 Years and ≥50 Years Admitted to a Single Centre: The Bergen Stroke Study. Stroke Research and Treatment. 8 pages.
  • Show author(s) (2011). Cerebral arterial vasospasm. . Tidsskrift for Den norske legeforening. 1558.
  • Show author(s) (2009). Trombolytisk behandling ved hjerneinfarkt. Tidsskrift for Den norske legeforening. 2214-2217.
  • Show author(s) (2009). Trombolytisk behandling ved arterielt hjerneinfarkt hos barn. Tidsskrift for Den norske legeforening. 2219-2222.
  • Show author(s) (2009). Serum Albumin in Ischemic Stroke Patients: The Higher the Better. Cerebrovascular Diseases. 13-17.
  • Show author(s) (2009). Preadmission use of warfarin improves short-term outcome in patients with acute cerebral infarction. Cerebrovascular Diseases. 8-12.
  • Show author(s) (2009). Intravenous thrombolysis for ischaemic stroke: short delays and high community-based treatment rates after organisational changes in a previously inexperienced centre. Emergency Medicine Journal. 324-326.
  • Show author(s) (2009). Disappearing hyperdense middle cerebral artery sign in ischaemic stroke patients treated with intravenous thrombolysis: clinical course and prognostic significance. Journal of Neurology, Neurosurgery and Psychiatry. 273-278.
  • Show author(s) (2009). Clinical presentation and diffusion weighted MRI of acute cerebral infarction. The Bergen Stroke Study. BMC Neurology. 5 pages.
  • Show author(s) (2009). Case Report of a Patient Who Underwent Thrombolysis of a "Silent" Thrombus in the Middle Cerebral Artery. The Neurologist. 142-143.
  • Show author(s) (2009). Admission C - reactive protein after acute ischemic stroke is associated with stroke severity and mortality: The 'Bergen stroke study'. BMC Neurology. 9 pages.
  • Show author(s) (1990). Bilateral non-traumatic carotid cavernous sinus fistula with spontaneous closure. Acta Ophthalmologica. 743-747.
Academic lecture
  • Show author(s) (2017). THE FEATURES OF THE TEMPORAL BONE WINDOW AND THEIR IMPLICATIONS FOR CONTRAST-ENHANCED SONOTHROMBOLYSIS IN ACUTE ISCHEMIC STROKE.
Reader opinion piece
  • Show author(s) (2018). Tenecteplase ved akutt hjerneinfarkt. Tidsskrift for Den norske legeforening. 22-23.
  • Show author(s) (2018). Indikasjonsstillingen ved trombektomi : . Tidsskrift for Den norske legeforening. 1592.
  • Show author(s) (2015). Store blodpropper i hjernen bør fjernes med trombektomi. Tidsskrift for Den norske legeforening. 2139-2140.
  • Show author(s) (2015). Re: Hva er god behandling ved akutt hjerneslag? Tidsskrift for Den norske legeforening. 1010-1011.
  • Show author(s) (2015). Diffusjonsvektet MR ved transitorisk iskemisk anfall. Tidsskrift for Den norske legeforening. 835-836.
  • Show author(s) (2015). C.E. Kvistad & L. Thomassen svarer. Tidsskrift for Den norske legeforening. 1106-1106.
  • Show author(s) (2013). Response to letter to the editor; ANE-O-03-12-096. Acta Neurologica Scandinavica. e19-e19.
  • Show author(s) (2011). Brev til redaktørenMarte-Helene Bjørk og medarbeidere svarer:. Tidsskrift for Den norske legeforening. 2334.
Short communication
  • Show author(s) (2021). Transkranial ultralydovervåking ved hjerneslag. Tidsskrift for Den norske legeforening. 1-5.
  • Show author(s) (2021). Sex differences in the Norwegian Tenecteplase Trial (NOR-TEST). European Journal of Neurology. 609-614.
  • Show author(s) (2021). Hjerneslag som eget fagfelt. Tidsskrift for Den norske legeforening.
  • Show author(s) (2018). Predictors of long-term survival after spontaneous intracerebral hemorrhage in southern Portugal: A retrospective study of a community representative population. Journal of the Neurological Sciences. 122-126.
  • Show author(s) (2017). Incidence and case-fatality from spontaneous intracerebral hemorrhage in a southern region of Portugal. Journal of the Neurological Sciences. 74-78.
Doctoral dissertation
  • Show author(s) (2017). The Norwegian Sonothrombolysis in Acute Stroke Study (NOR-SASS). Randomised controlled contrast-enhanced sonothrombolysis in a general acute ischaemic stroke population.
  • Show author(s) (2015). Structural and Functional Brain Imaging and Cognition in Aging and Stroke.
  • Show author(s) (2005). Acute Stroke – The first six hours.
Abstract
  • Show author(s) (2013). The Norwegian Sonothrombolysis in Acute Stroke study NOR-SASS. Cerebrovascular Diseases. 64-64.
  • Show author(s) (2012). Statins after stroke: how good are we with secondary prevention? European Journal of Neurology. 65-65.
  • Show author(s) (2012). Severe ischemic stroke associated with low body temperature within 6 hours of onset. The Bergen NORSTROKE study. European Journal of Neurology. 27-27.
  • Show author(s) (2012). Intracranial atherosclerosis in Norway. Preliminary results from the Norwegian intracranial atherosclerosis study. European Journal of Neurology. 51-51.
  • Show author(s) (2012). Generalized atherosclerotic disease among young ischemic stroke patients. Assessment by the NOR-SYS research protocol. The NORwegian Stroke in the Young study. European Journal of Neurology. 490-490.
  • Show author(s) (2009). A prospective study of serum albumin in ischemic stroke patients; albumin is likely to be neuroprotective. European Journal of Neurology. 39-39.
Poster
  • Show author(s) (2014). The Norwegian Sonothrombolysis in Acute Stroke Study (NORSASS): A randomised controlled trial of contrast enhanced ultrasound treatment in acute ischaemic stroke .
  • Show author(s) (2014). Longitudinal changes in visual working memory performance and frontoparietal intrinsic connectivity network synchronization non-cortical stroke.
Errata
  • Show author(s) (2020). Corrigendum to “Cerebrovascular reactivity after treatment of unruptured intracranial aneurysms - A transcranial Doppler sonography and acetazolamide study” (Journal of the Neurological Sciences (2016) 363 (97–103), (S0022510X15300903), (10.1016/j.jns.2015.12.024)). Journal of the Neurological Sciences.
Academic literature review
  • Show author(s) (2016). Novel thrombolytics for acute ischemic stroke: Challenges and opportunities. CNS Drugs. 101-108.
  • Show author(s) (2016). 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). PLOS ONE.
  • Show author(s) (2014). Hjerneinfarkt ved åpent foramen ovale. Tidsskrift for Den norske legeforening. 180-184.

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