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Lars Thomassen

Adjunct Professor
  • E-mailLars.Thomassen@uib.no
  • Visitor Address
    Haukeland Universitetssykehus Laboratoriebygget, 7. etg. Heis øst
  • Postal Address
    Postboks 7804
    5020 Bergen
Journal articles
  • Bjerkreim, Anna Therese; Khanevski, Andrej; Thomassen, Lars; Selvik, Henriette Aurora; Waje-Andreassen, Ulrike; Næss, Halvor; Logallo, Nicola. 2019. Five-year readmission and mortality differ by ischemic stroke subtype. Journal of the Neurological Sciences. 403: 31-37. doi: 10.1016/j.jns.2019.06.007
  • Bjerkreim, Anna Therese; Næss, Halvor; Khanevski, Andrej; Thomassen, Lars; Waje-Andreassen, Ulrike; Logallo, Nicola. 2019. One-year versus five-year hospital readmission after ischemic stroke and TIA. BMC Neurology. 19:15: 1-8. doi: 10.1186/s12883-019-1242-5
  • Bøthun, Marianne Lundervik; Haaland, Øystein Ariansen; Moen, Gunnar; Logallo, Nicola; Svendsen, Frode; Thomassen, Lars; Helland, Christian Andre. 2019. Impaired cerebrovascular reactivity may predict delayed cerebral ischemia after aneurysmal subarachnoid hemorrhage. Journal of the Neurological Sciences. 407:116539: 1-10. doi: 10.1016/j.jns.2019.116539
  • Khanevski, Andrej; Bjerkreim, Anna Therese; Novotny, Vojtech; Næss, Halvor; Thomassen, Lars; Logallo, Nicola; Kvistad, Christopher Elnan. 2019. Recurrent ischemic stroke: Incidence, predictors, and impact on mortality. Acta Neurologica Scandinavica. 140: 3-8. doi: 10.1111/ane.13093
  • Khanevski, Andrej; Kvistad, Christopher Elnan; Novotny, Vojtech; Næss, Halvor; Thomassen, Lars; Logallo, Nicola; Bjerkreim, Anna Therese. 2019. Incidence and etiologies of stroke mimics after incident stroke or transient ischemic attack. Stroke. 50: 2937-2940. doi: 10.1161/STROKEAHA.119.026573
  • Kvistad, Christopher Elnan; Novotny, Vojtech; Kurz, Martin; Rønning, Ole M.; Thommessen, Bente; Carlsson, Maria; Waje-Andreassen, Ulrike; Næss, Halvor; Thomassen, Lars; Logallo, Nicola. 2019. Safety and Outcomes of Tenecteplase in Moderate and Severe Ischemic Stroke. Stroke. 50: 1279-1281. doi: 10.1161/STROKEAHA.119.025041
  • Nawaz, Beenish; Eide, Geir Egil; Fromm, Annette; Øygarden, Halvor; Sand, Kristin Modalsli; Thomassen, Lars; Næss, Halvor; Waje-Andreassen, Ulrike. 2019. Young ischaemic stroke incidence and demographic characteristics - The Norwegian stroke in the young study - A three-generation research program. European Stroke Journal. 1-8. doi: 10.1177/2396987319863601
  • Næss, Halvor; Logallo, Nicola; Waje-Andreassen, Ulrike; Thomassen, Lars; Kvistad, Christopher Elnan. 2019. U-shaped relationship between hemoglobin level and severity of ischemic stroke. Acta Neurologica Scandinavica. 140: 56-61. doi: 10.1111/ane.13100
  • Rønning, Ole M.; Logallo, Nicola; Thommessen, Bente; Tobro, Håkon; Novotny, Vojtech; Kvistad, Christopher Elnan; Aamodt, Anne Hege; Næss, Halvor; Waje-Andreassen, Ulrike; Thomassen, Lars. 2019. Tenecteplase versus alteplase between 3 and 4.5 hours in low national institutes of health stroke scale. Stroke. 50: 498-500. doi: 10.1161/STROKEAHA.118.024223
  • Bjerkreim, Anna Therese; Khanevski, Andrej; Glad, Solveig B; Thomassen, Lars; Næss, Halvor; Logallo, Nicola. 2018. Thirty-day readmission after spontaneous intracerebral hemorrhage. Brain and Behavior. 8:e00935: 1-4. doi: 10.1002/brb3.935
  • Bjerkreim, Anna Therese; Khanevski, Andrej; Selvik, Henriette Aurora; Waje-Andreassen, Ulrike; Thomassen, Lars; Næss, Halvor; Logallo, Nicola. 2018. The impact of ischaemic stroke subtype on 30-day hospital readmissions. Stroke Research and Treatment. 2018. 7 pages. doi: 10.1155/2018/7195369
  • Bøthun, Marianne Lundervik; Haaland, Øystein Ariansen; Logallo, Nicola; Svendsen, Frode; Thomassen, Lars; Helland, Christian Andre. 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. 2018:6489276: 1-9. doi: 10.1155/2018/6489276
  • Khanevski, Andrej; Bjerkreim, Anna Therese; Novotny, Vojtech; Næss, Halvor; Thomassen, Lars; Logallo, Nicola; Kvistad, Christopher Elnan. 2018. Thirty-day recurrence after ischemic stroke or TIA. Brain and Behavior. 8: 1-6. doi: 10.1002/brb3.1108
  • Kvistad, Christopher Elnan; Novotny, Vojtech; Næss, Halvor; Hagberg, Guri; Ihle-Hansen, Hege; Waje-Andreassen, Ulrike; Thomassen, Lars; Logallo, Nicola. 2018. Safety and predictors of stroke mimics in The Norwegian Tenecteplase Stroke Trial (NOR-TEST). International Journal of Stroke. 1-9. doi: 10.1177/1747493018790015
  • Kvistad, Christopher Elnan; Thomassen, Lars; Aamodt, Anne Hege; Logallo, Nicola. 2018. Tenecteplase ved akutt hjerneinfarkt. Tidsskrift for Den norske legeforening. 138: 22-23. doi: 10.4045/tidsskr.17.0992
  • Nzwalo, Hipólito; Félix, Catarina; Nogueira, Jerina; Guilherme, Patrícia; Ferreira, Fátima; Salero, Teresa; Ramalhete, Sara; Martinez, Joana; Mouzinho, Maria; Marreiros, Ana; Thomassen, Lars; Logallo, Nicola. 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. 394: 122-126. doi: 10.1016/j.jns.2018.09.019
  • Nzwalo, Hipólito; Nogueira, Jerina; Guilherme, Patrícia; Abreu, Pedro; Félix, Catarina; Ferreira, Fátima; Ramalhete, Sara; Marreiros, Ana; Tatlisumak, Turgut; Thomassen, Lars; Logallo, Nicola. 2018. Hospital readmissions after spontaneous intracerebral hemorrhage in Southern Portugal. Clinical neurology and neurosurgery (Dutch-Flemish ed. Print). 169: 144-148. doi: 10.1016/j.clineuro.2018.04.015
  • Næss, Halvor; Thomassen, Lars; Waje-Andreassen, Ulrike; Glad, Solveig B; Kvistad, Christopher Elnan. 2018. High risk of early neurological worsening of lacunar infarction. Acta Neurologica Scandinavica. 1-7. doi: 10.1111/ane.13029
  • Sand, Kristin Modalsli; Næss, Halvor; Thomassen, Lars; Hoff, Jana Midelfart. 2018. Visual field defect after ischemic stroke - impact on mortality. Acta Neurologica Scandinavica. 137: 293-298. doi: 10.1111/ane.12870
  • Selvik, Henriette Aurora; Bjerkreim, Anna Therese; Thomassen, Lars; Waje-Andreassen, Ulrike; Næss, Halvor; Kvistad, Christopher Elnan. 2018. When to screen ischaemic stroke patients for cancer. Cerebrovascular Diseases. 45: 42-47. doi: 10.1159/000484668
  • Khanevski, Andrej; Næss, Halvor; Thomassen, Lars; Waje-Andreassen, Ulrike; Nacu, Aliona; Kvistad, Christopher Elnan. 2017. Elevated body temperature in ischemic stroke associated with neurological improvement. Acta Neurologica Scandinavica. 136: 414-418. doi: 10.1111/ane.12743
  • Kvistad, Christopher Elnan; Nacu, Aliona; Novotny, Vojtech; Logallo, Nicola; Waje-Andreassen, Ulrike; Næss, Halvor; Thomassen, Lars. 2017. Contrast‐enhanced sonothrombolysis in acute ischemic stroke patients without intracranial large‐vessel occlusion. Acta Neurologica Scandinavica. 137: 256-261. doi: 10.1111/ane.12861
  • Logallo, Nicola; Novotny, Vojtech; Assmus, Jörg; Kvistad, Christopher Elnan; Alteheld, Lars Holger; Rønning, Ole M.; Thommessen, Bente; Amthor, Karl-Friedrich; Ihle-Hansen, Hege; Kurz, Martin; Tobro, Håkon; Kaur, Kamaljit; Stankiewicz, Magdalena; Carlsson, Maria; Morsund, Åse Hagen; Idicula, Titto; Aamodt, Anne Hege; Lund, Christian; Næss, Halvor; Waje-Andreassen, Ulrike; Thomassen, Lars. 2017. Tenecteplase versus alteplase for management of acute ischaemic stroke (NOR-TEST): a phase 3, randomised, open-label, blinded endpoint trial. Lancet Neurology. 16: 781-788. doi: 10.1016/S1474-4422(17)30253-3
  • Novotny, Vojtech; Nacu, Aliona; Kvistad, Christopher Elnan; Fromm, Annette; Neckelmann, Gesche F; Khanevski, Andrej; Tobro, Håkon; Waje-Andreassen, Ulrike; Næss, Halvor; Thomassen, Lars; Logallo, Nicola. 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. Published ahead of print: 1-7. doi: 10.1007/s12975-017-0583-x
  • Novotny, Vojtech; Thomassen, Lars; Waje-Andreassen, Ulrike; Næss, Halvor. 2017. Acute cerebral infarcts in multiple arterial territories associated with cardioembolism. Acta Neurologica Scandinavica. 135: 346-351. doi: 10.1111/ane.12606
  • Nzwalo, Hipólito; Nogueira, Jerina; Félix, Ana; Guilherme, Patricia; Abreu, Pedro; Figueiredo, Teresa; Ferreira, Fátima; Marreiros, Ana; Thomassen, Lars; Logallo, Nicola. 2017. Short-term outcome of spontaneous intracerebral hemorrhage in Algarve, Portugal: retrospective hospital-based study. Journal of Stroke & Cerebrovascular Diseases. 27: 346-351. doi: 10.1016/j.jstrokecerebrovasdis.2017.09.006
  • Nzwalo, Hipólito; Nogueira, Jerina; Félix, Catarina; Guilherme, Patricia; Baptista, Alexandre; Figueiredo, Teresa; Ferreira, Fátima; Marreiros, Ana; Thomassen, Lars; Logallo, Nicola. 2017. Incidence and case-fatality from spontaneous intracerebral hemorrhage in a southern region of Portugal. Journal of the Neurological Sciences. 380: 74-78. doi: 10.1016/j.jns.2017.07.006
  • Næss, Halvor; Waje-Andreassen, Ulrike; Thomassen, Lars; Kvistad, Christopher Elnan. 2017. A score for paroxysmal atrial fibrillation in acute ischemic stroke. International Journal of Stroke. 13: 496-502. doi: 10.1177/1747493017724623
  • Søndergaard, Lars; Kasner, Scott E.; Rhodes, John F.; Andersen, Grethe; Iversen, Helle K.; Nielsen-Kudsk, Jens E.; Settergren, Magnus; Sjöstrand, Christina; Roine, Risto O.; Hildick-Smith, David; Spence, J. David; Thomassen, Lars. 2017. Patent foramen ovale closure or antiplatelet therapy for cryptogenic stroke. New England Journal of Medicine. 377: 1033-1042. doi: 10.1056/NEJMoa1707404
  • Bjerkreim, Anna Therese; Thomassen, Lars; Waje-Andreassen, Ulrike; Selvik, Henriette Aurora; Næss, Halvor. 2016. Hospital Readmission after Intracerebral Hemorrhage. Journal of Stroke & Cerebrovascular Diseases. 25: 157-162. doi: 10.1016/j.jstrokecerebrovasdis.2015.09.009
  • Bringeland, Gerd Haga; Nacu, Aliona; Waje-Andreassen, Ulrike; Thomassen, Lars; Næss, Halvor. 2016. U-curve relation between cholesterol and prior ischemic stroke. Brain and Behavior. 6:e00574. doi: 10.1002/brb3.574
  • Bøthun, Marianne Lundervik; Haaland, Øystein Ariansen; Logallo, Nicola; Svendsen, Frode; Thomassen, Lars; Helland, Christian Andre. 2016. Cerebrovascular reactivity after treatment of unruptured intracranial aneurysms - a transcranial Doppler sonography and acetazolamide study. Journal of the Neurological Sciences. 363: 97-103. doi: 10.1016/j.jns.2015.12.024
  • Fromm, Annette; Haaland, Øystein Ariansen; Næss, Halvor; Thomassen, Lars; Waje-Andreassen, Ulrike. 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. 25: 825-830. doi: 10.1016/j.jstrokecerebrovasdis.2015.12.019
  • Kvistad, Christopher Elnan; Øygarden, Halvor; Logallo, Nicola; Thomassen, Lars; Waje-Andreassen, Ulrike; Moen, Gunnar; Næss, Halvor. 2016. A stress-related explanation to the increased blood pressure and its course following ischemic stroke. Vascular Health and Risk Management. 12: 435-442. doi: 10.2147/VHRM.S109032
  • Logallo, Nicola; Kvistad, Christopher Elnan; Nacu, Aliona; Thomassen, Lars. 2016. Novel thrombolytics for acute ischemic stroke: Challenges and opportunities. CNS Drugs. 30: 101-108. doi: 10.1007/s40263-015-0307-2
  • Mørch-Rasmussen, Anja Cathrin; Nacu, Aliona; Waje-Andreassen, Ulrike; Thomassen, Lars; Næss, Halvor. 2016. Recurrent ischemic stroke is associated with the burden of risk factors. Acta Neurologica Scandinavica. 133: 289-294. doi: 10.1111/ane.12457
  • Nacu, Aliona; Bringeland, Gerd Haga; Khanevski, Andrej; Thomassen, Lars; Waje-Andreassen, Ulrike; Næss, Halvor. 2016. Early neurological worsening in acute ischaemic stroke patients. Acta Neurologica Scandinavica. 133: 25-29. doi: 10.1111/ane.12418
  • Nacu, Aliona; Fromm, Annette; Sand, Kristin Modalsli; Waje-Andreassen, Ulrike; Thomassen, Lars; Næss, Halvor. 2016. Age dependency of ischaemic stroke subtypes and vascular risk factors in western Norway: The Bergen Norwegian Stroke Cooperation Study. Acta Neurologica Scandinavica. 133: 202-207. doi: 10.1111/ane.12446
  • Nacu, Aliona; Kvistad, Christopher Elnan; Næss, Halvor; Øygarden, Halvor; Logallo, Nicola; Assmus, Jörg; Waje-Andreassen, Ulrike; Kurz, Kathinka Dæhli; Neckelmann, Gesche F; Thomassen, Lars. 2016. NOR-SASS (Norwegian Sonothrombolysis in Acute Stroke Study): Randomized controlled contrast-enhanced sonothrombolysis in an unselected acute ischemic stroke population. Stroke. 48: 335-341. doi: 10.1161/STROKEAHA.116.014644
  • Novotny, Vojtech; Khanevski, Andrej; Thomassen, Lars; Waje-Andreassen, Ulrike; Næss, Halvor. 2016. Time patterns in multiple acute cerebral infarcts. International Journal of Stroke. doi: /10.1177/1747493016677979
  • Næss, Halvor; Kurz, Friedrich Martin W.; Thomassen, Lars; Waje-Andreassen, Ulrike. 2016. Serial NIHSS scores in patients with acute cerebral infarction. Acta Neurologica Scandinavica. 133: 415-420. doi: 10.1111/ane.12477
  • Sand, Kristin Modalsli; Næss, Halvor; Nilsen, Roy Miodini; Thomassen, Lars; Hoff, Jana Midelfart. 2016. Less thrombolysis in posterior circulation infarction—a necessary evil? Acta Neurologica Scandinavica. 135: 546-552. doi: 10.1111/ane.12627
  • Sand, Kristin Modalsli; Wilhelmsen, Gunvor B.; Næss, Halvor; Midelfart, Anna; Thomassen, Lars; Hoff, Jana Midelfart. 2016. Vision problems in ischaemic stroke patients: effects on life quality and disability. European Journal of Neurology. 23: 1-7. doi: 10.1111/ene.12848
  • Øygarden, Halvor; Fromm, Annette; Sand, Kristin Modalsli; Eide, Geir Egil; Thomassen, Lars; Næss, Halvor; Waje-Andreassen, Ulrike. 2016. Can the cardiovascular family history reported by our patients be trusted? The Norwegian Stroke in the Young Study. European Journal of Neurology. 23: 154-159. doi: 10.1111/ene.12824
  • Øygarden, Halvor; Fromm, Annette; Sand, Kristin Modalsli; Kvistad, Christopher Elnan; Eide, Geir Egil; Thomassen, Lars; Næss, Halvor; Waje-Andreassen, Ulrike. 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. 11:e0159811. doi: 10.1371/journal.pone.0159811
  • Bjerkreim, Anna Therese; Thomassen, Lars; Brøgger, Jan C; Waje-Andreassen, Ulrike; Næss, Halvor. 2015. Causes and Predictors for Hospital Readmission after Ischemic Stroke. Journal of Stroke & Cerebrovascular Diseases. 24: 2095-2101. doi: 10.1016/j.jstrokecerebrovasdis.2015.05.019
  • Fromm, Annette; Thomassen, Lars. 2015. Store blodpropper i hjernen bør fjernes med trombektomi. Tidsskrift for Den norske legeforening. 135: 2139-2140. doi: 10.4045/tidsskr.15.0985
  • Helvig, Eirik; Thomassen, Lars; Waje-Andreassen, Ulrike; Næss, Halvor. 2015. Comparing withdrawal and non-withdrawal of life-sustaining treatment among patients who died from stroke. Vascular Health and Risk Management. 11: 507-510. doi: 10.2147/VHRM.S85814
  • Kvistad, Christopher Elnan; Thomassen, Lars. 2015. C.E. Kvistad & L. Thomassen svarer. Tidsskrift for Den norske legeforening. 135: 1106-1106. doi: 10.4045/tidsskr.15.0656
  • Kvistad, Christopher Elnan; Thomassen, Lars; Moen, Gunnar; Næss, Halvor. 2015. Diffusjonsvektet MR ved transitorisk iskemisk anfall. Tidsskrift for Den norske legeforening. 135: 835-836. doi: 10.4045/tidsskr.15.0016
  • Logallo, Nicola; Bøthun, Marianne Lundervik; Guttormsen, Anne Berit; Holmaas, Gunhild; Kråkenes, Jostein; Thomassen, Lars; Svendsen, Frode; Helland, Christian Andre. 2015. Continuous Local Intra-Arterial Nimodipine for the Treatment of Cerebral Vasospasm. Journal of Neurological Surgery Reports. 76: e75-78. doi: 10.1055/s-0034-1543976
  • Logallo, Nicola; Kvistad, Christopher Elnan; Thomassen, Lars. 2015. Therapeutic Potential of Tenecteplase in the Management of Acute Ischemic Stroke. CNS Drugs. 29: 811-818. doi: 10.1007/s40263-015-0280-9
  • Nacu, Aliona; Kvistad, Christopher Elnan; Logallo, Nicola; Næss, Halvor; Waje-Andreassen, Ulrike; Aamodt, Anne Hege; Solhoff, Ragnar Håkon; Lund, Christian; Tobro, Håkon; Rønning, Ole M.; Salvesen, Rolf; Idicula, Titto; Thomassen, Lars. 2015. A pragmatic approach to sonothrombolysis in acute ischaemic stroke: The Norwegian randomised controlled sonothrombolysis in acute stroke study (NOR-SASS). BMC Neurology. 15:110. 12 pages. doi: 10.1186/s12883-015-0359-4
  • Selvik, Henriette Aurora; Thomassen, Lars; Bjerkreim, Anna Therese; Næss, Halvor. 2015. Cancer-Associated Stroke: The Bergen NORSTROKE Study. Cerebrovascular Diseases. 107-113. doi: 10.1159/000440730
  • Thomassen, Lars; Næss, Halvor; Waje-Andreassen, Ulrike. 2015. Re: Hva er god behandling ved akutt hjerneslag? Tidsskrift for Den norske legeforening. 135: 1010-1011. doi: 10.4045/tidsskr.15.0596
  • Øygarden, Halvor; Fromm, Annette; Sand, Kristin Modalsli; Eide, Geir Egil; Thomassen, Lars; Næss, Halvor; Waje-Andreassen, Ulrike. 2015. Stroke patients' knowledge about cardiovascular family history - the Norwegian Stroke in the Young Study (NOR-SYS). BMC Neurology. 15:30: 1-8. doi: 10.1186/s12883-015-0276-6
  • Bøthun, Marianne Lundervik; Fromm, Annette; Haaland, Øystein; Waje-Andreassen, Ulrike; Svendsen, Frode; Thomassen, Lars; Helland, Christian Andre. 2014. Carotid intima-media thickness - a potential predictor for rupture risk of intracranial aneurysms. International Journal of Stroke. 9: 866-872. doi: 10.1111/ijs.12159
  • Jusufovic, Mirza; Thomassen, Lars; Skjelland, Mona. 2014. Hjerneinfarkt ved åpent foramen ovale. Tidsskrift for Den norske legeforening. 134: 180-184. doi: 10.4045/tidsskr.13.0038
  • Kvistad, Christopher Elnan; Khanevski, Andrej; Nacu, Aliona; Thomassen, Lars; Waje-Andreassen, Ulrike; Næss, Halvor. 2014. Is higher body temperature beneficial in ischemic stroke patients with normal admission CT angiography of the cerebral arteries? Vascular Health and Risk Management. 10: 49-54. doi: 10.2147/VHRM.S55423
  • Kvistad, Christopher Elnan; Logallo, Nicola; Thomassen, Lars; Moen, Gunnar; Waje-Andreassen, Ulrike; Næss, Halvor. 2014. Diffusion-weighted lesions in stroke patients with transient symptoms - Where are they located? Cerebrovascular Diseases. 38: 219-225. doi: 10.1159/000366264
  • Kvistad, Christopher Elnan; Thomassen, Lars; Waje-Andreassen, Ulrike; Logallo, Nicola; Næss, Halvor. 2014. Body temperature and major neurological improvement in tPA-treated stroke patients. Acta Neurologica Scandinavica. 129: 325-329. doi: 10.1111/ane.12184
  • Kvistad, Christopher Elnan; Øygarden, Halvor; Logallo, Nicola; Moen, Gunnar; Thomassen, Lars; Waje-Andreassen, Ulrike; Næss, Halvor. 2014. A dark Side of subcortical diffusion-weighted lesions? Characteristics, cause, and outcome in large subcortical infarction: The Bergen Norwegian Stroke Cooperation Study. Stroke. 45: 2710-2716. doi: 10.1161/STROKEAHA.114.005781
  • Kvistad, Christopher Elnan; Øygarden, Halvor; Logallo, Nicola; Thomassen, Lars; Waje-Andreassen, Ulrike; Næss, Halvor. 2014. Is smoking associated with favourable outcome in tPA‐treated stroke patients? Acta Neurologica Scandinavica. 130: 299-304. doi: 10.1111/ane.12225
  • Logallo, Nicola; Fromm, Annette; Waje-Andreassen, Ulrike; Thomassen, Lars; Matre, Knut. 2014. Effect of microbubble contrast on intracranial blood flow velocity assessed by transcranial Doppler. Journal of Ultrasound. 17: 21-26. doi: 10.1007/s40477-014-0065-x
  • Logallo, Nicola; Kvistad, Christopher Elnan; Nacu, Aliona; Næss, Halvor; Waje-Andreassen, Ulrike; Assmus, Jørg; Aamodt, Anne Hege; Lund, Christian; Kurz, Friedrich Martin W.; Rønning, Ole M.; Salvesen, Rolf; Idicula, Titto; Thomassen, Lars. 2014. The Norwegian tenecteplase stroke trial (NOR-TEST): Randomised controlled trial of tenecteplase vs. alteplase in acute ischaemic stroke. BMC Neurology. 14. doi: 10.1186/1471-2377-14-106
  • Logallo, Nicola; Kvistad, Christopher Elnan; Næss, Halvor; Waje-Andreassen, Ulrike; Thomassen, Lars. 2014. Mild stroke: Safety and outcome in patients receiving thrombolysis. Acta Neurologica Scandinavica. 129: 37-40. doi: 10.1111/ane.12235
  • Logallo, Nicola; Næss, Halvor; Waje-Andreassen, Ulrike; Thomassen, Lars. 2014. Prevalence of intracranial stenosis in a Norwegian ischemic stroke population. Journal of Stroke & Cerebrovascular Diseases. 23: 1611-1615. doi: 10.1016/j.jstrokecerebrovasdis.2013.12.049
  • Selvik, Henriette Aurora; Thomassen, Lars; Logallo, Nicola; Næss, Halvor. 2014. Prior cancer in patients with ischemic stroke: The Bergen NORSTROKE Study. Journal of Stroke & Cerebrovascular Diseases. 23: 919-925. doi: 10.1016/j.jstrokecerebrovasdis.2013.07.041
  • Sørensen, Tove; Dyb, Kari; Rygh, Ellen; Salvesen, Rolf; Thomassen, Lars. 2014. A qualitative description of telemedicine for acute stroke care in Norway: technology is not the issue. BMC Health Services Research. 14. doi: 10.1186/s12913-014-0643-9
  • Øygarden, Halvor; Kvistad, Christopher Elnan; Bjørk, Marte Helene; Thomassen, Lars; Waje-Andreassen, Ulrike; Næss, Halvor. 2014. Diffusion-weighted lesions in acute ischaemic stroke patients with migraine. Acta Neurologica Scandinavica. 129: 41-46. doi: 10.1111/ane.12236
  • Barlas, Nilüfer Yeşilot; Putaala, Jukka; Waje-Andreassen, Ulrike; Vassilopoulou, Sofia; Nardi, Katiuscia; Odier, Celine; Hofgart, Gergely; Engelter, Stefan; Burow, Annika; Mihalka, Laszlo; Kloss, Manja; Ferrari, Julia; Lemmens, Robin; Coban, Oguzhan; Haapaniemi, Elena; Maaijwee, Noortje; Rutten-Jacobs, Loes; Bersano, Anna; Cereda, Carlo; Baron, Pierluigi; Borellini, Linda; Valcarenghi, Caterina; Thomassen, Lars; Grau, Armin J.; Palm, Frederick; Urbanek, Christian; Tuncay, Rezzan; Durukan Tolvanen, Aysan; van Dijk, Ewoud J.; de Leeuw, Frank-Erik; Thijs, Vincent; Greisenegger, Stefan; Vemmos, Konstantinos; Lichy, Christoph; Bereczki, Daniel; Csiba, Laszlo; Michel, Patrik; Leys, Didier; Spengos, Konstantinos; Næss, Halvor; Tatlisumak, Turgut; Bahar, Sara Zarko. 2013. Etiology of first-ever ischaemic stroke in European young adults: the 15 cities young stroke study. European Journal of Neurology. 20: 1431-1439. doi: 10.1111/ene.12228
  • Fromm, Annette; Lundervold, Astri; Moen, Gunnar; SKULSTAD, SIRI; Thomassen, Lars. 2013. A vascular approach to mild amnestic cognitive impairment: a pilot study. Acta Neurologica Scandinavica, Supplementum. 127: 73-76. doi: 10.1111/ane.12054
  • 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. 2013. The Norwegian stroke in the young study (NOR-SYS): rationale and design. BMC Neurology. 13. 12 pages. doi: 10.1186/1471-2377-13-89
  • Henriksen, Endre; Ljøstad, Unn; Tveiten, Arnstein; Næss, Halvor; Thomassen, Lars; Mygland, Åse. 2013. Response to letter to the editor; ANE-O-03-12-096. Acta Neurologica Scandinavica. 128: e19-e19. doi: 10.1111/ane.12072
  • Henriksen, Endre; Ljøstad, Unn; Tveiten, Arnstein; Næss, Halvor; Thomassen, Lars; Mygland, Åse. 2013. TPA for ischemic stroke in patients ≥80 years. Acta Neurologica Scandinavica. 127: 309-315. doi: 10.1111/ane.12008
  • Kvistad, Christopher Elnan; Logallo, Nicola; Thomassen, Lars; Waje-Andreassen, Ulrike; Brøgger, Jan C; Næss, Halvor. 2013. Safety of off-label stroke treatment with tissue plasminogen activator. Acta Neurologica Scandinavica. 128: 48-53. doi: 10.1111/ane.12076
  • Kvistad, Christopher Elnan; Logallo, Nicola; Øygarden, Halvor; Thomassen, Lars; Waje-Andreassen, Ulrike; Næss, Halvor. 2013. Elevated Admission Blood Pressure and Stroke Severity in Acute Ischemic Stroke: The Bergen NORSTROKE Study. Cerebrovascular Diseases. 36: 351-354. doi: 10.1159/000355685
  • Kvistad, Christopher Elnan; Thomassen, Lars; Waje-Andreassen, Ulrike; Moen, Gunnar; Logallo, Nicola; Næss, Halvor. 2013. Clinical implications of increased use of MRI in TIA. Acta Neurologica Scandinavica. 128: 32-38. doi: 10.1111/ane.12068
  • Kvistad, Christopher Elnan; Øygarden, Halvor; Thomassen, Lars; Waje-Andreassen, Ulrike; Næss, Halvor. 2013. Persistent middle cerebral artery occlusion associated with lower body temperature on admission. Vascular Health and Risk Management. 9: 297-302. doi: 10.2147/VHRM.S44570
  • Nacu, Aliona; Kvistad, Christopher Elnan; Waje-Andreassen, Ulrike; Næss, Halvor; Thomassen, Lars. 2013. The Norwegian Sonothrombolysis in Acute Stroke study NOR-SASS. Cerebrovascular Diseases. 35: 64-64.
  • Ringelstein, E. Bernd; Chamorro, Angel; Kaste, Markku; Langhorne, Peter; Leys, Didier; Lyrer, Phillippe; Thijs, Vincent; Thomassen, Lars; Toni, Danilo. 2013. European Stroke Organisation Recommendations to Establish a Stroke Unit and Stroke Center. Stroke. 44: 828-840. doi: 10.1161/STROKEAHA.112.670430
  • Sand, Kristin Modalsli; Midelfart, Anna; Thomassen, Lars; Melms, Arthur; Wilhelm, Helmut; Hoff, Jana Midelfart. 2013. Visual impairment in stroke patients - a review. Acta Neurologica Scandinavica. 127: 52-56. Published 2012-11-29. doi: 10.1111/ane.12050
  • Waje-Andreassen, Ulrike; Thomassen, Lars; Jusufovic, Mirza; Power, Kjersti; Eide, Geir Egil; Vedeler, Christian A.; Næss, Halvor. 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. 20: 818-823. doi: 10.1111/ene.12073
  • Øygarden, Halvor; Kvistad, Christopher Elnan; Thomassen, Lars; Waje-Andreassen, Ulrike; Næss, Halvor. 2013. Does a history of migraine affect the rate of thrombolysis in young stroke patients? Stroke Research and Treatment. 2013:351064. 5 pages. doi: 10.1155/2013/351064
  • Aamodt, Anne Hege; Thomassen, Lars; Hoff, Jana Midelfart; Midelfart, Anna; Bråthen, Geir. 2012. Non-arteritisk sentralarterieokklusjon (CRAO). Oftalmolog. 32: 14-17.
  • Fromm, Annette; Thomassen, Lars; Næss, Halvor; Waje-Andreassen, Ulrike. 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. 19: 490-490. doi: 10.1111/j.1468-1331.2012.03889.x
  • Idicula, Titto; Logallo, Nicola; Brøgger, Jan C; Næss, Halvor; Thomassen, Lars. 2012. Statins after stroke: how good are we with secondary prevention? European Journal of Neurology. 19: 65-65.
  • Kvistad, Christopher Elnan; Thomassen, Lars; Waje-Andreassen, Ulrike; Næss, Halvor. 2012. Severe ischemic stroke associated with low body temperature within 6 hours of onset. The Bergen NORSTROKE study. European Journal of Neurology. 19: 27-27.
  • Logallo, Nicola; Lind, Jonas Anders; Næss, Halvor; Idicula, Titto; Brøgger, Jan C; Waje-Andreassen, Ulrike; Thomassen, Lars. 2012. Middle cerebral artery stenosis: transcranial color-coded sonography based on continuity equation versus CT-angiography. Ultraschall in der Medizin. 33: E326-332. doi: 10.1055/s-0032-1313076
  • Logallo, Nicola; Næss, Halvor; Waje-Andreassen, Ulrike; Thomassen, Lars. 2012. Intracranial atherosclerosis in Norway. Preliminary results from the Norwegian intracranial atherosclerosis study. European Journal of Neurology. 19: 51-51. doi: 10.1111/j.1468-1331.2012.03887.x
  • Thomassen, Lars; Waje-Andreassen, Ulrike; Brøgger, Jan C; Næss, Halvor. 2012. Acute stroke centre - the changing focus of stroke unit care. The Bergen NORSTROKE Study. Acta Neurologica Scandinavica. 125: 410-415. doi: 10.1111/j.1600-0404.2011.01582.x
  • Tveiten, Arnstein; Ljøstad, Unn; Mygland, Åse; Thomassen, Lars; Pripp, Are Hugo; Næss, Halvor. 2012. Intracerebral hemorrhage in Southern Norway - a Hospital-based incidence study. European Neurology. 67: 240-245. doi: 10.1159/000336299
  • Bjørk, Marte Helene; Thomassen, Lars; Waje-Andreassen, Ulrike. 2011. Brev til redaktørenMarte-Helene Bjørk og medarbeidere svarer:. Tidsskrift for Den norske legeforening. 131: 2334. doi: 10.4045/tidsskr.11.1118
  • Bjørk, Marte Helene; Thomassen, Lars; Waje-Andreassen, Ulrike. 2011. Cerebrale arterielle karspasmer. Tidsskrift for Den norske legeforening. 131: 1558. doi: 10.4045/tidsskr.10.1427
  • Fromm, Annette; Waje-Andreassen, Ulrike; Thomassen, Lars; Næss, Halvor. 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. doi: 10.4061/2011/183256
  • Logallo, Nicola; Næss, Halvor; Idicula, Titto; Brøgger, Jan C; Waje-Andreassen, Ulrike; Thomassen, Lars. 2011. Serum uri acid: neuroprotection in thrombolysis. The Bergen NORSTROKE study. BMC Neurology. 11. 6 pages. doi: 10.1186/1471-2377-11-114
  • Næss, Halvor; Fromm, Annette; Iversen, Ole-Erik; Thomassen, Lars; Waje-Andreassen, Ulrike. 2011. Decline of arterial cerebral infarction among young women: the Bergen Stroke Study. Vascular Health and Risk Management. 7: 81-84. doi: 10.2147/VHRM.S17219
  • Næss, Halvor; Idicula, Titto; Brøgger, Jan C; Waje-Andreassen, Ulrike; Thomassen, Lars. 2011. High Proportion of Lacunar Strokes at Night: The Bergen Stroke Study. Journal of Stroke & Cerebrovascular Diseases. 20: 424-428. doi: 10.1016/j.jstrokecerebrovasdis.2010.02.014
  • Thomassen, Lars; Storstein, Anette; Jusufovic, Mirza; Rotevatn, Svein; Lehmann, Sverre; Waje-Andreassen, Ulrike. 2011. En kvinne med tilbakevendende arteriovenøse tromboser. Tidsskrift for Den norske legeforening. 13-14. 1303-1306.
  • Idicula, Titto; Brøgger, Jan; Næss, Halvor; Waje-Andreassen, Ulrike; Thomassen, Lars. 2009. Admission C - reactive protein after acute ischemic stroke is associated with stroke severity and mortality: The 'Bergen stroke study'. BMC Neurology. 9. 9 pages. doi: 10.1186/1471-2377-9-18
  • Idicula, Titto; Thomassen, Lars. 2009. Case Report of a Patient Who Underwent Thrombolysis of a "Silent" Thrombus in the Middle Cerebral Artery. The Neurologist. 15: 142-143. doi: 10.1097/NRL.0b013e3181824741
  • Idicula, Titto; Waje-Andreassen, Ulrike; Brøgger, Jan; Næss, Halvor; Thomassen, Lars. 2009. A prospective study of serum albumin in ischemic stroke patients; albumin is likely to be neuroprotective. European Journal of Neurology. 16: 39-39.
  • Idicula, Titto; Waje-Andreassen, Ulrike; Brøgger, Jan; Næss, Halvor; Thomassen, Lars. 2009. Serum Albumin in Ischemic Stroke Patients: The Higher the Better. Cerebrovascular Diseases. 28: 13-17. doi: 10.1159/000215938
  • Kharitonova, Tatiana; Thoren, Margareta Molin; Ahmed, Niaz; Wardlaw, Joanna M.; von Kummer, Rüdiger; Thomassen, Lars; Wahlgren, Nils. 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. 80: 273-278. doi: 10.1136/jnnp.2008.150185
  • Næss, Halvor; Brøgger, Jan C; Idicula, Titto; Waje-Andreassen, Ulrike; Moen, Gunnar; Thomassen, Lars. 2009. Clinical presentation and diffusion weighted MRI of acute cerebral infarction. The Bergen Stroke Study. BMC Neurology. 9. 5 pages. doi: 10.1186/1471-2377-9-44
  • Næss, Halvor; Brøgger, Jan; Waje-Andreassen, Ulrike; Idicula, Titto; Thomassen, Lars. 2009. Preadmission use of warfarin improves short-term outcome in patients with acute cerebral infarction. Cerebrovascular Diseases. 28: 8-12. doi: 10.1159/000215937
  • Tveiten, Arnstein; Mygland, Åse; Ljøstad, Unn; Thomassen, Lars. 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. 26: 324-326. doi: 10.1136/emj.2008.063610
  • Varga, Viktoria; Waje-Andreassen, Ulrike; Næss, Halvor; Lundstadsveen, Maria Therese; Thomassen, Lars. 2009. Trombolytisk behandling ved hjerneinfarkt. Tidsskrift for Den norske legeforening. 129: 2214-2217. doi: 10.4045/tidsskr.08.0093
  • Waje-Andreassen, Ulrike; Thomassen, Lars; Aarli, Ånen; Kråkenes, Jostein; Norgård, Gunnar; Russell, David. 2009. Trombolytisk behandling ved arterielt hjerneinfarkt hos barn. Tidsskrift for Den norske legeforening. 129: 2219-2222. doi: 10.4045/tidsskr.09.0098
Reports and theses
  • Thomassen, Lars. 2005. Acute Stroke – The first six hours.

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