Ole Morten Rønning

• Siepen, Bernhard M.; Forfang, Elisabeth; Branca, Mattia; Drop, Boudewijn; Mueller, Madlaine & Goeldlin, Martina B. [Vis alle 36 forfattere av denne artikkelen] (2024). Intracerebral haemorrhage in patients taking different types of oral anticoagulants: a pooled individual patient data analysis from two national stroke registries. Stroke and Vascular Neurology. ISSN 2059-8688. doi: 10.1136/svn-2023-002813.
• Ihle-Hansen, Håkon; Vigen, Thea; Berge, Trygve; Walle-Hansen, Marte; Hagberg, Guri & Ihle-Hansen, Hege Beathe [Vis alle 12 forfattere av denne artikkelen] (2023). Carotid Plaque Score for Stroke and Cardiovascular Risk Prediction in a Middle-Aged Cohort From the General Population. Journal of the American Heart Association (JAHA). ISSN 2047-9980. 12(17), s. 1–10. doi: 10.1161/JAHA.123.030739. Fulltekst i vitenarkiv
• MacIntosh, Bradley; Liu, Qinghui; SCHELLHORN, TILL; Beyer, Mona K.; Groote, Inge Rasmus & Morberg, Pål [Vis alle 20 forfattere av denne artikkelen] (2023). Radiological features of brain hemorrhage through automated segmentation from computed tomography in stroke and traumatic brain injury. Frontiers in Neurology. ISSN 1664-2295. 14. doi: 10.3389/fneur.2023.1244672. Fulltekst i vitenarkiv
• Saberniak, Jørg; Strøm, Loreta Skrebelyte; Orstad, Eivind Bjørkan; Mykland Hilde, Janne; Solberg, Magnar Gangås & Rønning, Ole Morten [Vis alle 8 forfattere av denne artikkelen] (2023). Left atrial appendage strain predicts subclinical atrial fibrillation in embolic strokes of undetermined source. European Heart Journal Open (EHJ Open). 3(3). doi: 10.1093/ehjopen/oead039. Fulltekst i vitenarkiv
• Cochrane, Alexia; Chen, Chen; Stephen, Jacqueline; Rønning, Ole Morten; Anderson, Craig S & Hankey, Graeme J [Vis alle 7 forfattere av denne artikkelen] (2023). Antithrombotic treatment after stroke due to intracerebral haemorrhage. Cochrane Database of Systematic Reviews. ISSN 1469-493X. 2023(1). doi: 10.1002/14651858.CD012144.pub3.
• Larsen, Kristin Tveitan; Sandset, Else Charlotte; Selseth, Maiken Nordahl; Jahr, Silje Holt; Koubaa, Nojoud & Hillestad, Vigdis [Vis alle 8 forfattere av denne artikkelen] (2023). Antithrombotic Treatment, Prehospital Blood Pressure, and Outcomes in Spontaneous Intracerebral Hemorrhage. Journal of the American Heart Association (JAHA). ISSN 2047-9980. 12(5), s. 1–12. doi: 10.1161/JAHA.122.028336. Fulltekst i vitenarkiv
• Meinel, Thomas R.; Wilson, Duncan; Gensicke, Henrik; Scheitz, Jan F.; Ringleb, Peter & Goganau, Ioana [Vis alle 50 forfattere av denne artikkelen] (2023). Intravenous thrombolysis in patients with ischemic stroke and recent ingestion of direct oral anticoagulants. JAMA Neurology. ISSN 2168-6149. 80(3), s. 233–243. doi: 10.1001/jamaneurol.2022.4782.
• Forfang, Elisabeth; Larsen, Kristin Tveitan; Salman, Rustam Al-Shahi; Bell, Simon M.; Wester, Per & Berge, Eivind [Vis alle 8 forfattere av denne artikkelen] (2023). Antithrombotic treatment after intracerebral hemorrhage: Surveys among stroke physicians in Scandinavia and the United Kingdom. Health Science Reports. ISSN 2398-8835. 6(1), s. 1–8. doi: 10.1002/hsr2.1059. Fulltekst i vitenarkiv
• Walle-Hansen, Marte; Berge, Trygve; Vigen, Thea; Myrstad, Marius; Hagberg, Guri & Ihle-Hansen, Hege Beathe [Vis alle 14 forfattere av denne artikkelen] (2022). Systolic blood pressure at age 40 and cognitive function 25 years later: The Akershus Cardiac Examination (ACE) 1950 Study. Journal of Hypertension. ISSN 0263-6352. 41(1), s. 132–139. doi: 10.1097/HJH.0000000000003312.
• Nguyen, Thanh; Qureshi, Muhammad M.; Klein, Piers; Yamagami, Hiroshi; Mikulik, Robert & Czlonkowska, Anna [Vis alle 50 forfattere av denne artikkelen] (2022). Global Effect of the COVID-19 Pandemic on Stroke Volumes and Cerebrovascular Events A 1-Year Follow-up. Neurology. ISSN 0028-3878. 100(4), s. e408–e421. doi: 10.1212/WNL.0000000000201426. Fulltekst i vitenarkiv
• Strøm, Loreta Skrebelyte; Rønning, Ole Morten; Dahl, Fredrik Andreas; Steine, Kjetil & Kjekshus, Harald (2022). Prediction of occult atrial fibrillation in patients after cryptogenic stroke and transient ischaemic attack: PROACTIA. Europace. ISSN 1099-5129. 24(12), s. 1881–1888. doi: 10.1093/europace/euac092. Fulltekst i vitenarkiv Vis sammendrag

  Aims Studies with implantable cardiac monitors (ICMs) show that one-third of patients with cryptogenic stroke/transient ischaemic attack (TIA) have episodes of subclinical atrial fibrillation (SCAF) and benefit switching from antiplatelet- to anticoagulant therapy. However, ICMs are costly and resource demanding. We aimed to build a score based on participant’s baseline characteristics that could assess individual risk of SCAF. Methods and results In a prospective study, 236 eligible patients with a final diagnosis of cryptogenic stroke/TIA had an ICM implantated during the index hospitalization. Pre-specified evaluated variables were: CHA2DS2-VASc, P-wave duration, P-wave morphology, premature atrial beats (PAC)/24 h, supraventricular tachycardia/24 h, left atrial end-systolic volume index (LAVI), Troponin-T, NT-proBNP, and D-dimer. SCAF was detected in 84 patients (36%). All pre-specified variables were significantly associated with SCAF detection in univariate analysis. P-wave duration, followed by PAC/24 h, NT-proBNP, and LAVI, had the largest ratio of SCAF prevalence between its upper and lower quartiles (3.3, vs. 3.2, vs. 3.1 vs. 2.8, respectively). However, in a multivariate analysis, only PAC/24t, P-wave duration, P-wave morphology, and LAVIs remained significant predictors and were included in the PROACTIA score. Subclinical atrial fibrillation prevalence was 75% in the highest vs. 10% in the lowest quartile of the PROACTIA score with a 10-fold higher number of patients with an atrial fibrillation burden >6 h in the highest vs. the lowest quartile. Conclusion The PROACTIA score can identify patients with cryptogenic stroke/TIA at risk of subsequent SCAF detection. The large difference in SCAF prevalence between groups may provide a basis for future tailored therapy. Clinical trial registration Clinical Trial Registration: ClinicalTrials.gov; NCT02725944.

• Larsen, Kristin Tveitan; Selseth, Maiken Nordahl; Jahr, Silje Holt; Hillestad, Vigdis; Koubaa, Nojoud & Sandset, Else Charlotte [Vis alle 8 forfattere av denne artikkelen] (2022). Prehospital Blood Pressure and Clinical and Radiological Outcomes in Acute Spontaneous Intracerebral Hemorrhage. Stroke. ISSN 0039-2499. 53(12), s. 3633–3641. doi: 10.1161/STROKEAHA.121.038524.
• Bergh, Elin; Askim, Torunn; Rønning, Ole Morten; Saltyte Benth, Jurate; Fjærtoft, Hild & Thommessen, Bente (2022). Does implementation of a standardized pathway of stroke care affect functional outcome after stroke? International Journal of Stroke. ISSN 1747-4930. doi: 10.1177/17474930221126592. Fulltekst i vitenarkiv Vis sammendrag

  Background: A stroke care pathway (SCP) was introduced in Norway in 2018. The goal of the pathway was to avoid delay in treatment and diagnostics of acute stroke and to secure treatment according to national guidelines. In this study, we aimed to evaluate how the implementation of the SCP affects outcome after stroke. Methods: We performed a register-based study using data from the Norwegian Stroke Register that covers 87% of acute stroke patients in Norway. Patients included 1 year before and 1 year after the introduction of the care pathway were compared (2017 vs 2019). Change in functional outcome, the proportion of independent patients 90 days post-stroke, discharge destination, proportions admitted to stroke units and 90 days mortality were compared. Functional outcome was measured using modified Rankin Scale (mRS) and functional independence was defined as mRS 0–2. Results: In total, 11,009 patients with 90 days follow-up data were analyzed. Comparing the cohorts from 2017 and 2019, there was no change in demographics or stroke characteristics. No statistically significant differences in mRS, admission to thrombolysis time, or 90 days mortality were found. However, the proportion of patients discharged directly home and treated in a stroke unit increased from 2017 to 2019. Conclusion: The implementation of a standardized pathway of stroke care in Norway did not lead to improvement in functional outcome or a reduction in 90 days mortality. However, the proportion of patients discharged directly home increased, and more patients were treated in stroke units in 2019 compared with 2017.

• Øverberg, Linda Thøring; Lugg, Elise Fritsch; Gaarder, Mona; Langhammer, Birgitta; Thommessen, Bente & Rønning, Ole Morten [Vis alle 7 forfattere av denne artikkelen] (2022). Plasma levels of BDNF and EGF are reduced in acute stroke patients. Heliyon. ISSN 2405-8440. 8(6). doi: 10.1016/j.heliyon.2022.e09661. Fulltekst i vitenarkiv
• Bergh, Elin; Jahr, Silje Holt; Rønning, Ole Morten; Askim, Torunn; Thommessen, Bente & Kristoffersen, Espen Saxhaug (2022). Reasons and predictors of non-thrombolysis in patients with acute ischemic stroke admitted within 4.5 h. Acta Neurologica Scandinavica. ISSN 0001-6314. 146(1), s. 61–69. doi: 10.1111/ane.13622. Fulltekst i vitenarkiv Vis sammendrag

  Abstract Objectives Thrombolytic treatment in acute ischemic stroke (AIS) reduces stroke-related disability. Nearly 40% of all patients with AIS (<4.5 h) receive thrombolysis, but there is a large variation in the use between hospitals. Little is known about reasons and predictors for not giving thrombolytic treatment. Therefore, we aimed to investigate reasons for non-thrombolysis in patients admitted within 4.5 h. Methods All patients with AIS (<4.5 h) admitted to Akershus University Hospital, Norway, between January 2015 and December 2017 were examined. Patient characteristics and reasons for not giving thrombolysis were registered. Descriptive statistics and logistic regression analyses were performed. Results Of 535 patients admitted with AIS (<4.5 h), 250 (47%) did not receive thrombolysis and of these only 26% had an absolute contraindication to treatment. Among the 74% with relative contraindications, the most common reasons given were mild and improving symptoms. Previous stroke (OR 3.32, 95%CI 1.99–5.52), arriving between 3 h and 4.5 h after onset (OR 7.76, 95%CI 3.73–16.11) or having mild symptoms (OR 2.33, 95%CI 1.56–3.49) were all significant predictors of not receiving thrombolytic treatment in the multivariable logistic regression model. Conclusion A large proportion of patients with AIS do not receive thrombolysis. This study highlights up-to-date findings that arriving late in the time window, mild symptoms, and previous stroke are strong predictors of non-treatment. It is uncertain whether there is an underuse of thrombolysis in AIS. Increasing the utility of thrombolysis in the 4.5 h time window must be weighed against possible harms.

• Dahl, Fredrik Andreas; Barra, Mathias; Faiz, Kashif Waqar; Ihle-Hansen, Hege; Næss, Halvor & Rand, Kim [Vis alle 10 forfattere av denne artikkelen] (2022). Stroke unit demand in Norway – present and future estimates. BMC Health Services Research. ISSN 1472-6963. 22. doi: 10.1186/s12913-021-07385-1. Fulltekst i vitenarkiv Vis sammendrag

  Background All stroke patients should receive timely admission to a stroke unit (SU). Consequently, most patients with suspected strokes – including stroke mimics (SM) are admitted. The aim of this study was to estimate the current total demand for SU bed capacity today and give estimates for future (2020–2040) demand. Methods Time trend estimates for stroke incidence and time constant estimates for length of stay (LOS) were estimated from the Norwegian Patient Registry (2010–2015). Incidence and LOS models for SMs were based on data from Haukeland University Hospital (2008–2017) and Akershus University Hospital (2020), respectively. The incidence and LOS models were combined with scenarios from Statistic Norway’s population predictions to estimate SU demands for each health region. A telephone survey collected data on the number of currently available SU beds. Results In 2020, 361 SU beds are available, while demand was estimated to 302. The models predict a reduction in stroke incidence, which offsets projected demographic shifts. Still, the estimated demand for 2040 rose to 316, due to an increase in SMs. A variation of this reference scenario, where stroke incidence was frozen at the 2020-level, gave a 2040-demand of 480 beds. Conclusions While the stroke incidence is likely to continue to fall, this appears to be balanced by an increase in SMs. An important uncertainty is how long the trend of decreasing stroke incidence can be expected to continue. Since the most important uncertainty factors point toward a potential increase, which may be as large as 50%, we would recommend that the health authorities plan for a potential increase in the demand for SU bed capacity.

• Lyngbakken, Magnus; Vigen, Thea; Ihle-Hansen, Håkon; Brynildsen, Jon; Berge, Trygve & Rønning, Ole M. [Vis alle 9 forfattere av denne artikkelen] (2021). Cardiac troponin I measured with a very high sensitivity assay predicts subclinical carotid atherosclerosis: The Akershus Cardiac Examination 1950 Study. Clinical Biochemistry. ISSN 0009-9120. 93, s. 59–65. doi: 10.1016/j.clinbiochem.2021.04.005. Fulltekst i vitenarkiv
• Kristoffersen, Espen Saxhaug; Jahr, Silje Holt; Faiz, Kashif Waqar; Thommessen, Bente & Rønning, Ole M. (2021). Stroke admission rates before, during and after the first phase of the COVID-19 pandemic. Neurological Sciences. ISSN 1590-1874. 42(3), s. 791–798. doi: 10.1007/s10072-021-05039-y.
• Thommessen, Bente; Næss, Halvor; Logallo, Nicola; Kvistad, Christopher Elnan; Waje-Andreassen, Ulrike & Ihle-Hansen, Hege [Vis alle 9 forfattere av denne artikkelen] (2020). Tenecteplase versus alteplase after acute ischemic stroke at high age. International Journal of Stroke. ISSN 1747-4930. doi: 10.1177/1747493020938306.
• Kristoffersen, Espen Saxhaug; Jahr, Silje Holt; Thommessen, Bente & Rønning, Ole M. (2020). Effect of COVID-19 pandemic on stroke admission rates in a Norwegian population. Acta Neurologica Scandinavica. ISSN 0001-6314. 142, s. 632–636. doi: 10.1111/ane.13307. Fulltekst i vitenarkiv
• Chandra, Anupam; Røsjø, Helge; Svensson, My Hanna Sofia; Vigen, Thea; Ihle-Hansen, Håkon & Orstad, Eivind Bjørkan [Vis alle 14 forfattere av denne artikkelen] (2020). Plasma linoleic acid levels and cardiovascular risk factors: results from the Norwegian ACE 1950 Study. European Journal of Clinical Nutrition. ISSN 0954-3007. doi: 10.1038/s41430-020-0641-4. Fulltekst i vitenarkiv
• Chandra, Anupam; Lyngbakken, Magnus; Eide, Ivar Anders; Røsjø, Helge; Vigen, Thea & Ihle-Hansen, Håkon [Vis alle 13 forfattere av denne artikkelen] (2020). Plasma trans fatty acid levels, cardiovascular risk factors and lifestyle: Results from the Akershus cardiac examination 1950 study. Nutrients. ISSN 2072-6643. 12(5). doi: 10.3390/nu12051419. Fulltekst i vitenarkiv
• Chandra, Anupam; Røsjø, Helge; Eide, Ivar Anders; Vigen, Thea; Ihle-Hansen, Håkon & Orstad, Eivind Bjørkan [Vis alle 13 forfattere av denne artikkelen] (2019). Plasma marine n-3 polyunsaturated fatty acids and cardiovascular risk factors: data from the ACE 1950 study. European Journal of Nutrition. ISSN 1436-6207. doi: 10.1007/s00394-019-02007-3.
• Faiz, Kashif Waqar; Sundseth, Antje; Thommessen, Bente & Rønning, Ole M. (2019). The knowing-doing gap in acute stroke - Does stroke knowledge translate into action? Brain and Behavior. ISSN 2162-3279. doi: 10.1002/brb3.1245.
• Vigen, Thea; Ihle-Hansen, Håkon; Lyngbakken, Magnus; Berge, Trygve; Thommessen, Bente & Ihle-Hansen, Hege [Vis alle 11 forfattere av denne artikkelen] (2019). Carotid Atherosclerosis is Associated with Middle Cerebral Artery Pulsatility Index. Journal of Neuroimaging (JON). ISSN 1051-2284. doi: 10.1111/jon.12684. Fulltekst i vitenarkiv
• Vigen, Thea; Ihle-Hansen, Håkon; Lyngbakken, Magnus; Berge, Trygve; Thommessen, Bente & Ihle-Hansen, Hege [Vis alle 12 forfattere av denne artikkelen] (2019). Blood pressure at age 40 predicts carotid atherosclerosis two decades later: Data from the Akershus Cardiac Examination 1950 Study. Journal of Hypertension. ISSN 0263-6352. 37(10), s. 1982–1990. doi: 10.1097/HJH.0000000000002131. Fulltekst i vitenarkiv
• Labberton, Angela Susan; Barra, Mathias; Rønning, Ole M.; Thommessen, Bente; Churilov, Leonid & Cadilhac, Dominique A. [Vis alle 7 forfattere av denne artikkelen] (2019). Patient and service factors associated with referral and admission to inpatient rehabilitation after the acute phase of stroke in Australia and Norway. BMC Health Services Research. ISSN 1472-6963. 19:871. doi: 10.1186/s12913-019-4713-x. Fulltekst i vitenarkiv
• Rand, Kim; Dahl, Fredrik Andreas; Viana, Joe; Rønning, Ole M.; Faiz, Kashif Waqar & Barra, Mathias (2019). Fewer ischemic strokes, despite an ageing population: stroke models from observed incidence in Norway 2010–2015. BMC Health Services Research. ISSN 1472-6963. 19(1). doi: 10.1186/s12913-019-4538-7. Fulltekst i vitenarkiv
• Faiz, Kashif Waqar; Labberton, Angela Susan; Thommessen, Bente; Rønning, Ole M. & Barra, Mathias (2019). Stroke-Related Knowledge and Lifestyle Behavior among Stroke Survivors. Journal of Stroke & Cerebrovascular Diseases. ISSN 1052-3057. s. 1–7. doi: 10.1016/j.jstrokecerebrovasdis.2019.104359.
• Chandra, Anupam; Røsjø, Helge; Eide, Ivar Anders; Vigen, Thea; Ihle-Hansen, Håkon & Orstad, Eivind Bjørkan [Vis alle 13 forfattere av denne artikkelen] (2019). Plasma marine n-3 polyunsaturated fatty acids and cardiovascular risk factors: data from the ACE 1950 study. European Journal of Nutrition. ISSN 1436-6207. s. 1–11. doi: 10.1007/s00394-019-02007-3. Fulltekst i vitenarkiv
• Ihle-Hansen, Håkon; Vigen, Thea; Berge, Trygve; Hagberg, Guri; Engedal, Knut & Rønning, Ole M. [Vis alle 12 forfattere av denne artikkelen] (2019). Carotid Atherosclerosis and Cognitive Function in a General Population Aged 63-65 Years: Data from the Akershus Cardiac Examination (ACE) 1950 Study. Journal of Alzheimer's Disease. ISSN 1387-2877. 70(4), s. 1041–1049. doi: 10.3233/JAD-190327. Fulltekst i vitenarkiv
• Kvistad, Christopher Elnan; Novotny, Vojtech; Kurz, Martin; Rønning, Ole M.; Thommessen, Bente & Carlsson, Maria [Vis alle 10 forfattere av denne artikkelen] (2019). Safety and Outcomes of Tenecteplase in Moderate and Severe Ischemic Stroke. Stroke. ISSN 0039-2499. 50(5), s. 1279–1281. doi: 10.1161/STROKEAHA.119.025041. Fulltekst i vitenarkiv
• Rønning, Ole M.; Logallo, Nicola; Thommessen, Bente; Tobro, Håkon; Novotny, Vojtech & Kvistad, Christopher Elnan [Vis alle 10 forfattere av denne artikkelen] (2019). Tenecteplase versus alteplase between 3 and 4.5 hours in low national institutes of health stroke scale. Stroke. ISSN 0039-2499. 50(2), s. 498–500. doi: 10.1161/STROKEAHA.118.024223.
• Labberton, Angela Susan; Rønning, Ole M.; Thommessen, Bente & Barra, Mathias (2019). Changes in survival and characteristics among older stroke unit patients-1994 versus 2012. Brain and Behavior. ISSN 2162-3279. 9(1). doi: 10.1002/brb3.1175. Fulltekst i vitenarkiv
• Barra, Mathias; Labberton, Angela Susan; Faiz, Kashif Waqar; Lindstrøm, Jonas Christoffer; Rønning, Ole M. & Viana, Joe [Vis alle 8 forfattere av denne artikkelen] (2019). Stroke incidence in the young: evidence from a Norwegian register study. Journal of Neurology. ISSN 0340-5354. s. 1–17. doi: 10.1007/s00415-018-9102-6.
• Faiz, Kashif Waqar; Labberton, Angela Susan; Thommessen, Bente; Rønning, Ole M.; Dahl, Fredrik Andreas & Barra, Mathias (2018). The Burden of Stroke Mimics: Present and Future Projections. Journal of Stroke & Cerebrovascular Diseases. ISSN 1052-3057. 27(5), s. 1288–1295. doi: 10.1016/j.jstrokecerebrovasdis.2017.12.011.
• Ihle-Hansen, Håkon; Vigen, Thea; Ihle-Hansen, Hege; Rønning, Ole M.; Berge, Trygve & Thommessen, Bente [Vis alle 12 forfattere av denne artikkelen] (2018). Prevalence of carotid plaque in a 63- to 65-Year-Old Norwegian cohort from the general population: The ACE (Akershus Cardiac Examination) 1950 study. Journal of the American Heart Association (JAHA). ISSN 2047-9980. 7(10). doi: 10.1161/JAHA.118.008562. Fulltekst i vitenarkiv
• Faiz, Kashif Waqar; Sundseth, Antje; Thommessen, Bente & Rønning, Ole M. (2018). Patient knowledge on stroke risk factors, symptoms and treatment options. Vascular Health and Risk Management. ISSN 1176-6344. 14, s. 37–40. doi: 10.2147/VHRM.S152173.
• Labberton, Angela Susan; Faiz, Kashif Waqar; Rønning, Ole M.; Thommessen, Bente & Barra, Mathias (2018). Differences in and Determinants of Prehospital Delay Times among Stroke Patients?1994 Versus 2012. Journal of Stroke & Cerebrovascular Diseases. ISSN 1052-3057. 27(9), s. 2398–2404. doi: 10.1016/j.jstrokecerebrovasdis.2018.04.030. Fulltekst i vitenarkiv
• Vigen, Thea; Thommessen, Bente & Rønning, Ole M. (2018). Stroke Risk Is Low after Urgently Treated Transient Ischemic Attack. Journal of Stroke & Cerebrovascular Diseases. ISSN 1052-3057. 27(2), s. 291–295. doi: 10.1016/j.jstrokecerebrovasdis.2017.08.037.
• Ihle-Hansen, Håkon; Vigen, Thea; Berge, Trygve; Einvik, Gunnar; Aarsland, Dag & Rønning, Ole M. [Vis alle 10 forfattere av denne artikkelen] (2017). Montreal Cognitive Assessment in a 63- to 65-year-old Norwegian Cohort from the General Population: Data from the Akershus Cardiac Examination 1950 Study. Dementia and Geriatric Cognitive Disorders Extra. ISSN 1664-5464. 7(3), s. 318–327. doi: 10.1159/000480496. Fulltekst i vitenarkiv
• Logallo, Nicola; Novotny, Vojtech; Assmus, Jörg; Kvistad, Christopher Elnan; Alteheld, Lars Holger & Rønning, Ole M. [Vis alle 21 forfattere av denne artikkelen] (2017). Tenecteplase versus alteplase for management of acute ischaemic stroke (NOR-TEST): a phase 3, randomised, open-label, blinded endpoint trial. Lancet Neurology. ISSN 1474-4422. 16(10), s. 781–788. doi: 10.1016/S1474-4422(17)30253-3.
• Faiz, Kashif Waqar; Sundseth, Antje; Thommessen, Bente & Rønning, Ole M. (2017). Prehospitalt forløp ved akutt hjerneslag. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 137(11), s. 798–802. doi: 10.4045/tidsskr.16.0512.
• Perry, Luke A.; Berge, Eivind; Bowditch, Joshua; Forfang, Elisabeth; Rønning, Ole M. & Hankey, Graeme J. [Vis alle 8 forfattere av denne artikkelen] (2017). Antithrombotic treatment after stroke due to intracerebral haemorrhage. Cochrane Database of Systematic Reviews. ISSN 1469-493X. 2017:CD012144(5), s. 1–45. doi: 10.1002/14651858.CD012144.pub2.
• Rønning, Ole M. & Tornes, K.D. (2017). Need for symptomatic management in Advanced multiple sclerosis. Acta Neurologica Scandinavica. ISSN 0001-6314. 135(5), s. 529–532. doi: 10.1111/ane.12631.
• Evensen, Kristin; Aulie, Hanne Aaserud; Rønning, Ole M.; Flatø, Berit & Russell, David (2016). Carotid atherosclerosis in adult patients with persistently active juvenile idiopathic arthritis compared with healthy controls. Journal of Rheumatology. ISSN 0315-162X. 43(4), s. 810–815. doi: 10.3899/jrheum.150499. Vis sammendrag

  Objective. Juvenile idiopathic arthritis (JIA) is the most common inflammatory rheumatic disease in childhood. It is regarded as a systemic inflammatory disease with possible increased risk of cardiovascular disease (CVD). The aim of this study was to assess carotid intima-media thickness (IMT) and carotid stenosis as surrogate measures for CVD in adults with longterm active JIA and healthy age- and sex-matched controls. Methods. Seventy-five patients with JIA (age 28–45 yrs) with persistently active disease at least 15 years after disease onset were reexamined after a median of 29 years and compared with 75 matched controls. Patients and controls were examined by color duplex ultrasound of the carotid arteries to compare carotid IMT and carotid stenosis in the 2 groups. Results. Patients with JIA did not have increased carotid IMT values compared with the controls (mean ± SD: 0.56 mm ± 0.09 vs 0.58 mm ± 0.07, p = 0.289). Patients with a higher disease activity indicated by the Juvenile Arthritis Disease Activity Score value above the median value had increased carotid IMT compared with the patients with a lower value, but not statistically different compared with controls. No carotid stenoses were detected in patients or controls. Conclusion. We found similar carotid IMT values in adult patients with JIA and controls.

• Altmann, Marianne; Thommessen, Bente; Rønning, Ole M.; Saltyte Benth, Jurate; REICHENBACH, ANTJE & Fure, Brynjar (2016). Middle Cerebral Artery Pulsatility Index is Associated with Cognitive Impairment in Lacunar Stroke. Journal of Neuroimaging (JON). ISSN 1051-2284. 26(4), s. 431–435. doi: 10.1111/jon.12335. Vis sammendrag

  ABSTRACT BACKGROUND AND PURPOSE Pulsatility index (PI) of the middle cerebral artery is postulated to reflect the vascular resistance in the artery distal of the probe, and has been reported to increase in small vessel disease, diabetes mellitus, ageing, and dementia. Lacunar infarcts are considered to be related to cognitive impairment. We therefore conducted a study to assess the association between cognitive impairment and PI in patients with a lacunar infarct. METHODS Consecutive patients presenting with an acute lacunar syndrome who were admitted to the stroke unit were enrolled. The patients were examined with Doppler ultrasonography of the intracranial arteries, and the PI of the middle cerebral artery was recorded. Cognitive function was evaluated by mini-mental state examination (MMSE), clock drawing test, and trail making test (TMT) A and B. RESULTS Among the 113 patients included, 85 patients had an acute lacunar infarct and 28 had one or more nonlacunar infarcts. The mean PI was 1.46 (SD = .33). PI was significantly (P < .05) associated with MMSE, TMT A and TMT B in patients with lacunar infarct, even after adjustment for multiple patient characteristics (age, sex, prestroke hypertension, smoking, previous stroke, and diabetes). CONCLUSIONS PI was associated with the cognitive performance in patients with lacunar infarcts and a lacunar syndrome. An elevated PI may be related to impairment in several cognitive domains. These findings suggest that transcranial Doppler ultrasonography could be an adjunct tool for early diagnosis of cognitive impairment after stroke.

• Perry, Luke A.; Berge, Eivind; Bowditch, Joshua; Forfang, Elisabeth; Rønning, Ole M. & Hankey, Graeme J. [Vis alle 8 forfattere av denne artikkelen] (2016). Antithrombotic treatment after intracerebral haemorrhage. Cochrane Database of Systematic Reviews. ISSN 1469-493X. 2016(4). doi: 10.1002/14651858.CD012144.
• Buchten, Daniela; Egeberg, Erik Haakon; Holtsmark, Sven Gabriel; Rønning, Ole M. & Sørbye, Yngvild (2015). Kultur, kunst og propaganda. I Holtsmark, Sven Gabriel (Red.), Naboer i frykt og forventning. Norge og Russland 1917-2014. Pax Forlag. ISSN 9788253037509. s. 173–197.
• Altmann, Marianne; Thommessen, Bente; Rønning, Ole M.; REICHENBACH, ANTJE & Fure, Brynjar (2015). Blood pressure differences between patients with lacunar and nonlacunar infarcts. Brain and Behavior. ISSN 2162-3279. 5(8). doi: 10.1002/brb3.353. Fulltekst i vitenarkiv
• Nacu, Aliona; Kvistad, Christopher Elnan; Logallo, Nicola; Næss, Halvor; Waje-Andreassen, Ulrike & Aamodt, Anne Hege [Vis alle 13 forfattere av denne artikkelen] (2015). A pragmatic approach to sonothrombolysis in acute ischaemic stroke: The Norwegian randomised controlled sonothrombolysis in acute stroke study (NOR-SASS). BMC Neurology. ISSN 1471-2377. 15:110. doi: 10.1186/s12883-015-0359-4. Fulltekst i vitenarkiv
• Evensen, Kristin; Dahl, Arve; Rønning, Ole M. & Russell, David (2015). The Assessment of Carotid Atherosclerosis Using a New Multipurpose Ultrasound Probe. Journal of Neuroimaging (JON). ISSN 1051-2284. 25(2), s. 232–237. doi: 10.1111/jon.12105.
• Evensen, Kristin; Sarvari, Sebastian Imre; Rønning, Ole M.; Edvardsen, Thor & Russell, David (2014). Carotid artery intima-media thickness is closely related to impaired left ventricular function in patients with coronary artery disease: A single-centre, blinded, non-randomized study. Cardiovascular Ultrasound. ISSN 1476-7120. 12(1). doi: 10.1186/1476-7120-12-39.
• Faiz, Kashif Waqar; Thommessen, Bente; Einvik, Gunnar; Brekke, Pål Haugar; Omland, Torbjørn & Rønning, Ole M. (2014). Determinants of high sensitivity cardiac troponin T elevation in acute ischemic stroke. BMC Neurology. ISSN 1471-2377. 14(1). doi: 10.1186/1471-2377-14-96.
• Evensen, Kristin; Slevolden, Ellen Margrethe; Skagen, Karolina Ryeng; Rønning, Ole M.; Brunborg, Cathrine & Polesie, Anne Lene Krogstad [Vis alle 7 forfattere av denne artikkelen] (2014). Increased subclinical atherosclerosis in patients with chronic plaque psoriasis. Atherosclerosis. ISSN 0021-9150. 237(2), s. 499–503. doi: 10.1016/j.atherosclerosis.2014.10.008.
• Altmann, Marianne; Thommessen, Bente; Rønning, Ole M.; REICHENBACH, ANTJE & Fure, Brynjar (2014). Diagnostic accuracy and risk factors of the different lacunar syndromes. Journal of Stroke & Cerebrovascular Diseases. ISSN 1052-3057. 23(8), s. 2085–2090. doi: 10.1016/j.jstrokecerebrovasdis.2014.03.014.
• Sundseth, Antje; Faiz, Kashif Waqar; Rønning, Ole M. & Thommessen, Bente (2014). Factors related to knowledge of stroke symptoms and risk factors in a norwegian stroke population. Journal of Stroke & Cerebrovascular Diseases. ISSN 1052-3057. 23(7), s. 1849–1855. doi: 10.1016/j.jstrokecerebrovasdis.2014.02.026.
• Faiz, Kashif Waqar; Sundseth, Antje; Thommessen, Bente & Rønning, Ole M. (2014). Reasons for low thrombolysis rate in a Norwegian ischemic stroke population. Neurological Sciences. ISSN 1590-1874. 35(12), s. 1977–1982. doi: 10.1007/s10072-014-1876-4.
• Logallo, Nicola; Kvistad, Christopher Elnan; Nacu, Aliona; Næss, Halvor; Waje-Andreassen, Ulrike & Assmus, Jørg [Vis alle 13 forfattere av denne artikkelen] (2014). The Norwegian tenecteplase stroke trial (NOR-TEST): Randomised controlled trial of tenecteplase vs. alteplase in acute ischaemic stroke. BMC Neurology. ISSN 1471-2377. 14(1:106). doi: 10.1186/1471-2377-14-106. Fulltekst i vitenarkiv
• Faiz, Kashif Waqar; Thommessen, Bente; Einvik, Gunnar; Omland, Torbjørn & Rønning, Ole M. (2014). Prognostic Value of High-sensitivity Cardiac Troponin T in Acute Ischemic Stroke. Journal of Stroke & Cerebrovascular Diseases. ISSN 1052-3057. 23(2), s. 241–248. doi: 10.1016/j.jstrokecerebrovasdis.2013.01.005.
• Faiz, Kashif Waqar; Sundseth, Antje; Thommessen, Bente & Rønning, Ole M. (2014). Factors Related to Decision Delay in Acute Stroke. Journal of Stroke & Cerebrovascular Diseases. ISSN 1052-3057. 23(3), s. 534–539. doi: 10.1016/j.jstrokecerebrovasdis.2013.05.007.
• Sundseth, Antje; Thommessen, Bente & Rønning, Ole M. (2014). Early Mobilization after Acute Stroke. Journal of Stroke & Cerebrovascular Diseases. ISSN 1052-3057. 23(3), s. 496–499. doi: 10.1016/j.jstrokecerebrovasdis.2013.04.012.
• Faiz, Kashif W; Sundseth, Antje; Thommessen, Bente & Rønning, Ole M. (2013). Prehospital delay in acute stroke and TIA. Emergency Medicine Journal. ISSN 1472-0205. 30(8), s. 669–674. doi: 10.1136/emermed-2012-201543.
• Langhorne, Peter; Fearon, Patricia; Rønning, Ole M.; Kaste, Markku; Palomäki, Heikki & Vemmos, Kostos [Vis alle 12 forfattere av denne artikkelen] (2013). Stroke unit Care Benefits Patients With Intracerebral Hemorrhage Systematic Review and Meta-analysis. Stroke. ISSN 0039-2499. 44(11), s. 3044–3049. doi: 10.1161/STROKEAHA.113.001564.
• Rønning, Ole M. (2013). Very long-term mortality after ischemic stroke: : predictors of cardiovascular death. Acta Neurologica Scandinavica. ISSN 0001-6314. 127, s. 69–72. doi: 10.1111/ane.12053.
• Rønning, Ole M. & Stavem, Knut (2012). Predictors of Mortality Following Acute Stroke: A Cohort Study with 12 Years of Follow-Up. Journal of Stroke & Cerebrovascular Diseases. ISSN 1052-3057. 21(5), s. 369–372. doi: 10.1016/j.jstrokecerebrovasdis.2010.09.012.
• Sundseth, Antje; Thommessen, Bente & Rønning, Ole M. (2012). Outcome After Mobilization Within 24 Hours of Acute Stroke A Randomized Controlled Trial. Stroke. ISSN 0039-2499. 43(9), s. 2389–2394. doi: 10.1161/STROKEAHA.111.646687.
• Stavem, Knut & Rønning, Ole M. (2011). Survival over 12 years following acute stroke: initial treatment in a stroke unit vs general medical wards. Acta Neurologica Scandinavica. ISSN 0001-6314. 124(6), s. 429–433. doi: 10.1111/j.1600-0404.2011.01485.x.

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• Jahr, Silje Holt; Sandset, Else Charlotte; Faiz, Kashif Waqar; Larsen, Kristin Tveitan; Hillestad, Vigdis & Selseth, Maiken Nordahl [Vis alle 11 forfattere av denne artikkelen] (2022). PRE-HOSPITAL SYSTOLIC BLOOD PRESSURE AND DIAGNOSIS IN SUSPECTED STROKE: THE AKERSHUS STUDY OF ISCHEMIC STROKE AND THROMBOLYSIS-1.
• Bjerkreim, Anna Therese; Jahr, Silje Holt; Faiz, Kashif Waqar; Larsen, Kristin Tveitan; Hillestad, Vigdis & Selseth, Maiken Nordahl [Vis alle 14 forfattere av denne artikkelen] (2022). TIME ON SCENE BEFORE ADMISSION OF ACUTE STROKE AND STROKE MIMICS: THE AKERSHUS STUDY OF ISCHEMIC STROKE AND THROMBOLYSIS-1.
• Larsen, Kristin Tveitan; Selseth, Maiken Nordahl; Jahr, Silje Holt; Hillestad, Vigdis; Koubaa, Nojoud & Sandset, Else Charlotte [Vis alle 8 forfattere av denne artikkelen] (2022). IMPACT OF ANTITHROMBOTIC TREATMENT ON ASSOCIATIONS BETWEEN PREHOSPITAL SYSTOLIC BLOOD PRESSURE AND OUTCOMES IN ACUTE, SPONTANEOUS INTRACEREBRAL HAEMORRHAGE.
• Koubaa, Nojoud; Larsen, Kristin Tveitan; Hillestad, Vigdis; Selseth, Maiken Nordahl; Jahr, Silje Holt & Faiz, Kashif Waqar [Vis alle 13 forfattere av denne artikkelen] (2022). EPIDEMIOLOGY AND CLINICAL PRESENTATION OF SPONTANEOUS CEREBELLAR HEMORRHAGE IN A NORWEGIAN POPULATION.
• Altmann, Marianne; Rønning, Ole Morten; Fure, Brynjar; Selnes, Per; Reichenbach, Antje & Kristoffersen, Espen Saxhaug [Vis alle 7 forfattere av denne artikkelen] (2022). SHORT- AND LONG-TERM MORTALITY AFTER LACUNAR INFARCT.
• Rønning, Ole Morten; Carlsson, Maria Kristin; Ihle-Hansen, Hege; Aamodt, Anne Hege ; Tveiten, Arnstein & Eltoft, Agnethe [Vis alle 9 forfattere av denne artikkelen] (2022). Overvåkning etter akutt hjerneslag bør bli bedre. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 142(14), s. 1–6. doi: 10.4045/tidsskr.22.0401.
• Ihle-Hansen, Håkon; Sandset, Else Charlotte; Ihle-Hansen, Hege; Hagberg, Guri; Thommessen, Bente & Rønning, Ole Morten [Vis alle 12 forfattere av denne artikkelen] (2021). Sex differences in the Norwegian Tenecteplase Trial (NOR-TEST). European Journal of Neurology. ISSN 1351-5101. 29, s. 609–614. doi: 10.1111/ene.15126. Fulltekst i vitenarkiv
• Aamodt, Anne Hege; Taubøll, Erik; Ele, Tom Eich; Romundstad, Luis Georg; Sorteberg, Angelika & Wallace, Sean Ciaran [Vis alle 24 forfattere av denne artikkelen] (2021). Brain monitoring in hospitals needs to be strengthened. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 141(15), s. 1–8. doi: 10.4045/tidsskr.21.0412.
• Thomassen, Lars; Kurz, Friedrich Martin Wilhelm & Rønning, Ole Morten (2021). Hjerneslag som eget fagfelt. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 141(17). doi: 10.4045/tidsskr.21.0618.
• Larsen, Kristin Tveitan; Forfang, Elisabeth; Pennlert, Johanna; Glader, Eva-Lotta; Kruuse, Christina & Wester, Per [Vis alle 12 forfattere av denne artikkelen] (2020). STudy of Antithrombotic Treatment after IntraCerebral Haemorrhage: Protocol for a randomised controlled trial. European Stroke Journal. ISSN 2396-9873. 5(4), s. 414–422. doi: 10.1177/2396987320954671. Fulltekst i vitenarkiv
• Kristoffersen, Espen Saxhaug; REICHENBACH, ANTJE; Faiz, Kashif Waqar; Altmann, Marianne; Sundseth, Antje & Thommessen, Bente [Vis alle 7 forfattere av denne artikkelen] (2019). Is it possible to detect large-vessel occlusions in acute ischemic stroke using screening scales? European Journal of Neurology. ISSN 1351-5101. 26.
• Kristoffersen, Espen Saxhaug; REICHENBACH, ANTJE; Faiz, Kashif Waqar; Altmann, Marianne; Sundseth, Antje & Thommessen, Bente [Vis alle 7 forfattere av denne artikkelen] (2019). IS IT POSSIBLE TO DETECT LARGE-VESSEL OCCLUSIONS IN ACUTE ISCHEMIC STROKE USING CLINICAL SCREENING SCALES? European Stroke Journal. ISSN 2396-9873. 4. doi: 10.1177/2396987319845578.
• Kristoffersen, Espen Saxhaug; REICHENBACH, ANTJE; Faiz, Kashif Waqar; Bergh, Elin; Baar, Anette & Altmann, Marianne [Vis alle 9 forfattere av denne artikkelen] (2019). Prehospital tidsbruk ved hjerneslag. Tid brukt på hentested.
• Barra, Mathias; Labberton, Angela Susan; Faiz, Kashif Waqar; Lindstrøm, Jonas Christoffer; Rønning, Ole M. & Viana, Joe [Vis alle 9 forfattere av denne artikkelen] (2019). Slaginsidens i alle aldre – tidstrender og fremskrivninger.
• Aamodt, Anne Hege; Kurz, Friedrich Martin Wilhelm; Jacobsen, Eva Astrid; Totland, Jon Andre; Rønning, Ole Morten & Thomassen, Lars [Vis alle 8 forfattere av denne artikkelen] (2018). Indikasjonsstillingen ved trombektomi : . Tidsskrift for Den norske legeforening. ISSN 0029-2001. 138(17). doi: 10.4045/tidsskr.18.0771.
• Kristoffersen, Espen Saxhaug; REICHENBACH, ANTJE; Faiz, Kashif Waqar; Altmann, Marianne; Sundseth, Antje & Thommessen, Bente [Vis alle 7 forfattere av denne artikkelen] (2018). Is it possible to identify acute ischemic stroke patients with large-vessel occlusions using clinical screening scales?
• Kristoffersen, Espen Saxhaug; REICHENBACH, ANTJE; Faiz, Kashif Waqar; Altmann, Marianne; Sundseth, Antje & Thommessen, Bente [Vis alle 7 forfattere av denne artikkelen] (2018). Kan pasienter med akutt storkarokklusjon identifiseres med kliniske skåringsverktøy?
• Labberton, Angela Susan; Rønning, Ole M.; Thommessen, Bente & Barra, Mathias (2018). Survival in older Norwegian stroke patients.
• Labberton, Angela Susan; Rønning, Ole M.; Thommessen, Bente & Barra, Mathias (2018). Changes in survival, risk factors and stroke characteristics among older Norwegian stroke unit patients.
• Labberton, Angela Susan; Rønning, Ole M.; Thommessen, Bente & Barra, Mathias (2018). Patterns and predictors of referral to rehabilitation among older Norwegian stroke unit patients.
• Labberton, Angela Susan; Rønning, Ole M.; Thommessen, Bente & Barra, Mathias (2018). Access to hospital-based rehabilitation among older Norwegian stroke unit patients.
• Faiz, Kashif Waqar & Rønning, Ole M. (2018). Hjerneslag. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 138(3), s. 279–280.
• Jahr, Silje Holt; Rønning, Ole M.; Sundseth, Antje; Skrebelyte-Strøm, Loreta & Thommessen, Bente (2018). En mann i 40-årene med residiverende hjerneinfarkt. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 138(11), s. 1033–1036. doi: 10.4045/tidsskr.17.0853.
• Labberton, Angela Susan; Faiz, Kashif Waqar; Thommessen, Bente; Rønning, Ole M. & Barra, Mathias (2017). Differences in pre-hospital delay times among Norwegian stroke patients - 1994 versus 2012.
• Labberton, Angela Susan; Faiz, Kashif Waqar; Thommessen, Bente; Rønning, Ole M. & Barra, Mathias (2017). TRENDS IN STROKE SEVERITY AND BASELINE RISK PROFILE IN PATIENTS TREATED ON A COMPREHENSIVE STROKE UNIT IN NORWAY IN 1994 VERSUS 2012.
• Labberton, Angela Susan; Faiz, Kashif Waqar; Thommessen, Bente; Rønning, Ole M. & Barra, Mathias (2017). Differences in pre-hospital delay times in greater Oslo and Akershus County in 1994 versus 2012.
• Faiz, Kashif Waqar; Labberton, Angela Susan; Thommessen, Bente; Rønning, Ole M.; Dahl, Fredrik Andreas & Barra, Mathias (2017). THE BURDEN OF STROKE MIMICS - THE PRESENT AND FUTURE PROJECTIONS.
• Rønning, Ole M. (2016). Ultralyd av halspulsårer. I Aakhus, Svend (Red.), Medisinsk ultralyddiagnostikk. Klinisk basisbok.. Gyldendal Akademisk. ISSN 978-82-05-49017-8. s. 149–162.
• Rønning, Ole M. (2016). Reperfusjonsbehandling ved ukjent slagdebut :. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 136(16). doi: 10.4045/tidsskr.16.0626.
• Rønning, Ole M. & Benterud, A. (2013). Natural course of urinary retention in acute stroke. Cerebrovascular Diseases. ISSN 1015-9770. 35, s. 687–687.
• Garden, Brita & Rønning, Ole M. (2012). NRK Puls Dette er tegnene på akutt hjerneslag. [TV]. NRK TV.
• Altmann, Marianne; Fure, Brynjar; Rønning, Ole M. & Thommessen, Bente (2016). Lacunar infarcts. Clinical syndromes, risk facturs and diagnostic aspects. Akademika forlag. ISSN 9788283331493.

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