• Anna T Bjerkreim, Lars Thomassen, Jan Brøgger, Ulrike Waje-Andreassen, and Halvor Næss.
• Department of Clinical Medicine, University of Bergen, Bergen, Norway; Department of Neurology, Haukeland University Hospital, Bergen, Norway. Electronic address: anna.bjerkreim@student.uib.no.
• J Stroke Cerebrovasc Dis. 2015 Sep 1; 24 (9): 2095-101.

BackgroundReadmission after stroke is frequent, but limited data are available in Europe. This study aimed at assessing frequencies, causes, and factors associated with early and late unplanned readmissions within 1 year after discharge from ischemic stroke hospitalization.MethodsAll surviving ischemic stroke patients admitted to the Department of Neurology, Haukeland University Hospital, Norway, between July 1, 2007, and June 30, 2012, were followed from discharge until August 1, 2012. Information on readmissions was collected by medical chart reviews. Logistic regression was performed to assess factors associated with early (≤90 days) and late (91-365 days) readmission.ResultsOf 1175 patients discharged alive, 18.8% were readmitted within 90 days, and 24.5% were readmitted between day 91 and 365. Most frequent causes were infections, recurrent ischemic stroke, other cardiovascular events, and events related to index stroke. Early readmission was associated with older age, impaired physical function, atherosclerotic etiology of index stroke, and a higher risk factor burden. Late readmission was associated with older age and prior myocardial infarction. Early readmitted patients had shorter length of index admission, poorer physical function and higher frequencies of atherosclerotic etiology of index stroke, atrial fibrillation, and complications with infection during the index admission compared to patients readmitted late.ConclusionsReadmission after ischemic stroke is frequent, especially in the early period after discharge. Diagnoses and predictors varied according to time point for readmission, reflecting different underlying mechanisms for causes of readmission. Causes of early readmission may include a prothrombotic state and disposition for recurrent infections.Copyright © 2015 National Stroke Association. Published by Elsevier Inc. All rights reserved.

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