Blar i Faculty of Medicine på forfatter "Næss, Halvor"

Viser treff 21-40 av 50

    • Immunophenotyping in post-giardiasis functional gastrointestinal disease and chronic fatigue syndrome 

      Hanevik, Kurt; Kristoffersen, Einar K.; Sørnes, Steinar; Mørch, Kristine; Næss, Halvor; Rivenes, Ann Christin; Bødtker, Jørn; Hausken, Trygve; Langeland, Nina (Peer reviewed; Journal article, 2012-10-14)
      Background: A Giardia outbreak was associated with development of post-infectious functional gastrointestinal disorders (PI-FGID) and chronic fatigue syndrome (PI-CFS). Markers of immune dysfunction have given conflicting ...

    • Impact of different methods defining post-stroke neurocognitive disorder: The Nor-COAST study 

      Munthe-Kaas, Ragnhild; Aam, Stina; Ihle-Hansen, Hege; Lydersen, Stian; Knapskog, Anne Brita; Wyller, Torgeir Bruun; Fure, Brynjar; Thingstad, Pernille; Askim, Torunn; Beyer, Mona K.; Næss, Halvor; Seljeseth, Yngve Müller; Ellekjær, Hanne; Pendlebury, Sarah T.; Saltvedt, Ingvild (Journal article; Peer reviewed, 2020-03-16)
      Introduction Post‐stroke neurocognitive disorder (NCD) is common; prevalence varies between studies, partially related to lack of consensus on how to identify cases. The aim was to compare the prevalence of post‐stroke ...

    • 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 ...

    • Investigating novel biomarkers of immune activation and modulation in the context of sedentary behaviour: a multicentre prospective ischemic stroke cohort study 

      Alme, Katinka Nordheim; Askim, Torunn; Assmus, Jörg; Mollnes, Tom Eirik; Naik, Mala; Næss, Halvor; Saltvedt, Ingvild; Ueland, Per-Magne; Ulvik, Arve; Knapskog, Anne-Brita (Journal article; Peer reviewed, 2021)
      Background Sedentary behaviour is associated with disease, but the molecular mechanisms are not understood. Valid biomarkers with predictive and explanatory properties are required. Therefore, we have investigated traditional ...

    • Is long-bout sedentary behaviour associated with long-term glucose levels 3 months after acute ischaemic stroke? A prospective observational cohort study 

      Alme, Katinka Nordheim; Knapskog, Anne Brita; Næss, Halvor; Naik, Mala; Beyer, Mona K.; Ellekjær, Hanne; English, Coralie; Ihle-Hansen, Hege; Kummeneje, Camilla S.; Munthe-Kaas, Ragnhild; Saltvedt, Ingvild; Seljeseth, Yngve Müller; Tan, Xiang chun; Thingstad, Pernille; Askim, Torunn (Journal article; Peer reviewed, 2020)
      Background and purpose Sedentary behaviour is a risk factor for vascular disease and stroke patients are more sedentary than their age-matched peers. The association with glucose levels, as a potential mediator, is ...

    • Longitudinal follow-up of employment status in patients with chronic fatigue syndrome after mononucleosis 

      Nyland, Morten; Næss, Halvor; Birkeland, Jon Steinar; Nyland, Harald Inge (Peer reviewed; Journal article, 2015-11-26)
      Objective: To examine the effect of early clinical and demographic factors on occupational outcome, return to work or awarded permanent disability pension in young patients with chronic fatigue syndrome (CFS). Design: ...

    • 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 ...

    • Neopterin and kynurenic acid as predictors of stroke recurrence and mortality: a multicentre prospective cohort study on biomarkers of infammation measured three months after ischemic stroke 

      Alme, Katinka Nordheim; Ulvik, Arve; Askim, Torunn; Assmus, Jörg; Mollnes, Tom Eirik; Naik, Mala; Næss, Halvor; Saltvedt, Ingvild; Ueland, Per-Magne; Knapskog, Anne Brita (Journal article; Peer reviewed, 2021)
      Background Chronic low-grade inflammation is associated with both ischemic stroke and sedentary behaviour. The aim of this study was to investigate the predictive abilities of biomarkers of inflammation and immune modulation ...

    • 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 Cognitive impairment after stroke study (Nor-COAST): study protocol of a multicentre, prospective cohort study 

      Thingstad, Pernille; Askim, Torunn; Beyer, Mona K.; Bråthen, Geir; Ellekjær, Hanne; Ihle-Hansen, Hege; Knapskog, Anne Brita; Lydersen, Stian; Munthe-Kaas, Ragnhild; Næss, Halvor; Pendlebury, Sarah; Seljeseth, Yngve Müller; Saltvedt, Ingvild (Peer reviewed; Journal article, 2018-11-26)
      Background: Early and late onset post-stroke cognitive impairment (PCI) contributes substantially to disability following stroke, and is a high priority within stroke research. The aetiology for PCI is complex and related ...

    • 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 ...

    • Olfactory dysfunction in chronic stroke patients 

      Wehling, Eike; Næss, Halvor; Wollschlaeger, Daniel; Hofstad, Håkon; Bramerson, Annika; Bende, Mats; Nordin, Steven (Peer reviewed; Journal article, 2015-10-12)
      Background The aim of the study was to investigate odor identification performance in patients one year after hospital admittance due to stroke. Predictors for olfactory dysfunction were investigated as well as self-reported ...

    • 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 ...

    • Plasma Inflammatory Biomarkers Are Associated With Poststroke Cognitive Impairment: The Nor-COAST Study 

      Sandvig, Heidi Vihovde; Aam, Stina; Alme, Katinka Nordheim; Askim, Torunn; Beyer, Mona K.; Ellekjær, Hanne; Ihle-Hansen, Hege Beathe; Lydersen, Stian; Mollnes, Tom Eirik; Munthe-Kaas, Ragnhild; Næss, Halvor; Saltvedt, Ingvild Tina; Seljeseth, Yngve Müller; Thingstad, Anne Pernille Mæhle; Wethal, Torgeir; Knapskog, Anne Brita (Journal article; Peer reviewed, 2023)
      Background: Inflammation is proposed to be involved in the pathogenesis of poststroke cognitive impairment. The aim of this study was to investigate associations between concentrations of systemic inflammatory biomarkers ...

    • A pragmatic approach to sonothrombolysis in acute ischaemic stroke: The Norwegian randomised controlled sonothrombolysis in acute stroke study (NOR-SASS) 

      Nacu, Aliona; Kvistad, Christopher Elnan; Logallo, Nicola; Næss, Halvor; Waje-Andreassen, Ulrike; Aamodt, Anne Hege; Solhoff, Ragnar; Lund, Christian; Tobro, Håkon; Rønning, Ole Morten; Salvesen, Rolf; Idicula, Titto; Thomassen, Lars (Peer reviewed; Journal article, 2015-07-11)
      Background: Ultrasound accelerates thrombolysis with tPA (sonothrombolysis). Ultrasound in the absence of tPA also accelerates clot break-up (sonolysis). Adding intravenous gaseous microbubbles may potentiate the effect ...

    • Pre-stroke cognitive impairment is associated with vascular imaging pathology: a prospective observational study 

      Schellhorn, Till; Zucknick, Manuela; Askim, Torunn; Munthe-Kaas, Ragnhild; Ihle-Hansen, Hege; Seljeseth, Yngve Müller; Knapskog, Anne Brita; Næss, Halvor; Ellekjær, Hanne; Thingstad, Pernille; Wyller, Torgeir Bruun; Saltvedt, Ingvild; Beyer, Mona Kristiansen (Journal article; Peer reviewed, 2021)
      Background Chronic brain pathology and pre-stroke cognitive impairment (PCI) is predictive of post-stroke dementia. The aim of the current study was to measure pre-stroke neurodegenerative and vascular disease burden found ...

    • Prevalence of atherosclerosis and association with 5-year outcome: The Norwegian Stroke in the Young Study 

      Nawaz, Beenish; Fromm, Annette; Øygarden, Halvor; Eide, Geir E; Saeed, Sahrai; Meijer, Rudy; Bots, Michiel L; Sand, Kristin M; Thomassen, Lars; Næss, Halvor; Waje-Andreassen, Ulrike (Journal article; Peer reviewed, 2021)
      Objectives: We studied the prevalence of atherosclerosis among ischaemic stroke patients ≤60 years and controls at the time of the index stroke, and its association with occurrence of new cardiovascular events (CVEs) and ...

    • Recurrent ischemic stroke: Incidence, predictors, and impact on mortality 

      Khanevski, Andrej; Bjerkreim, Anna Therese; Novotny, Vojtech; Næss, Halvor; Thomassen, Lars; Logallo, Nicola; Kvistad, Christopher Elnan (Peer reviewed; Journal article, 2019)
      Background and purpose: Recurrent ischemic stroke (IS) or TIA is frequent with a considerable variation in incidence and mortality across populations. Current data on stroke recurrence and mortality are useful to examine ...

    • Risk factors and their impact on carotid intima-media thickness in young and middle-aged ischemic stroke patients and controls: The Norwegian Stroke in the Young Study 

      Fromm, Annette; Haaland, Øystein Ariansen; Næss, Halvor; Thomassen, Lars; Waje-Andreassen, Ulrike (Peer reviewed; Journal article, 2014-03-26)
      Background: Vascular morbidity and mortality due to cardiovascular disease (CVD) are high after ischemic stroke at a young age. Data on carotid intima-media thickness (cIMT) as marker of atherosclerosis are scarce for young ...