Blar i Bergen Open Research Archive på forfatter "Næss, Halvor"
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Early vascular aging in young and middle-aged ischemic stroke patients: The Norwegian stroke in the young study
Saeed, Sahrai; Waje-Andreassen, Ulrike; Fromm, Annette; Øygarden, Halvor; Kokorina, Marina Victorovna; Næss, Halvor; Gerdts, Eva (Peer reviewed; Journal article, 2014-11-18)Background: Ischemic stroke survivors have high risk of cardiovascular morbidity and mortality even at young age, suggesting that early arterial aging is common among such patients. Methods: We measured aortic stiffness ... -
Factors influencing employment after minor stroke and NSTEMI
Morsund, Åse Hagen; Ellekjær, Hanne; Gramstad, Arne; Reiestad, Magnus Tallaksen; Midgard, Rune; Sando, Sigrid Botne; Jonsbu, Egil; Næss, Halvor (Journal article; Peer reviewed, 2020)Aim: To study the effect of cognitive function, fatigue and emotional symptoms on employment after a minor ischemic stroke compared to non-ST-elevation myocardial infarction (NSTEMI). Material and methods: We included ... -
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 frequency and impact of admission hyperglycemia on short term outcome of acute stroke patients admitted to Tikur Anbessa Specialized hospital, Addis Ababa, Ethiopia: a cross-sectional study
Zewde, Yared Zenebe; Mengesha, Abenet Tafesse; Gebreyes, Yeweynhareg Feleke; Næss, Halvor (Peer reviewed; Journal article, 2019-12-27)Background: Admission hyperglycemia (HG) has been associated with worse outcomes among acute stroke patients. A better understanding and awareness of the potentially adverse influence of hyperglycemia on the clinical outcome ... -
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 ...