The Impact of Ischaemic Stroke Subtype on 30-day Hospital Readmissions

Background. Stroke aetiology may 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 examine frequencies, causes, and risk of 30-day readmission by stroke subtype...

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Main Authors: Anna Therese Bjerkreim, Andrej Netland Khanevski, Henriette Aurora Selvik, Ulrike Waje-Andreassen, Lars Thomassen, Halvor Naess, Nicola Logallo
Format: Article
Language:English
Published: Wiley 2018-01-01
Series:Stroke Research and Treatment
Online Access:http://dx.doi.org/10.1155/2018/7195369
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author Anna Therese Bjerkreim
Andrej Netland Khanevski
Henriette Aurora Selvik
Ulrike Waje-Andreassen
Lars Thomassen
Halvor Naess
Nicola Logallo
author_facet Anna Therese Bjerkreim
Andrej Netland Khanevski
Henriette Aurora Selvik
Ulrike Waje-Andreassen
Lars Thomassen
Halvor Naess
Nicola Logallo
author_sort Anna Therese Bjerkreim
collection DOAJ
description Background. Stroke aetiology may 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 examine frequencies, causes, and risk of 30-day readmission by stroke subtype, determine predictors of 30-day readmission, and study the impact of 30-day readmissions on one-year mortality. Methods. All surviving patients admitted with IS or TIA from July 2007 to December 2013 were followed by review of medical records for all unplanned readmissions within 30 days after discharge. Stroke subtype was classified as large-artery atherosclerosis (LAA), cardioembolism (CE), small vessel occlusion (SVO), stroke of other determined aetiology (SOE), or stroke of undetermined aetiology (SUE). Cox regression analyses were performed to assess the risk of 30-day readmission for the stroke subtypes and identify predictors of 30-day readmission, and its impact on one-year mortality. Results. Of 1874 patients, 200 (10.7%) were readmitted within 30 days [LAA 42/244 (17.2%), CE 75/605 (12.4%), SVO 12/205 (5.9%), SOE 6/32 (18.8%), SUE 65/788 (8.3%)]. The most frequent causes of readmissions were stroke-related event, infection, recurrent stroke/ TIA, and cardiac disease. After adjusting for age, sex, functional outcome, length of stay, and the risk factor burden, patients with LAA and SOE subtype had significantly higher risks of readmission for any cause, recurrent stroke or TIA, and stroke-related events. Predictors of 30-day readmission were higher age, peripheral arterial disease, enteral feeding, and LAA subtype. Thirty-day readmission was an independent predictor of one-year mortality. Conclusions. Patients with LAA or SOE have a high risk of 30-day readmission, possibly caused by an increased risk of recurrent stroke and stroke-related events. Awareness of the risk of readmission for different causes and appropriate handling according to stroke subtype may be useful for preventing some readmissions after stroke.
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spelling doaj-art-fdafa4e2a9b0494b9dd0ecb34ae0bbc02025-02-03T05:49:48ZengWileyStroke Research and Treatment2090-81052042-00562018-01-01201810.1155/2018/71953697195369The Impact of Ischaemic Stroke Subtype on 30-day Hospital ReadmissionsAnna Therese Bjerkreim0Andrej Netland Khanevski1Henriette Aurora Selvik2Ulrike Waje-Andreassen3Lars Thomassen4Halvor Naess5Nicola Logallo6Department of Clinical Medicine, University of Bergen, NorwayDepartment of Neurology, Haukeland University Hospital, NorwayDepartment of Clinical Medicine, University of Bergen, NorwayDepartment of Neurology, Haukeland University Hospital, NorwayDepartment of Clinical Medicine, University of Bergen, NorwayDepartment of Clinical Medicine, University of Bergen, NorwayDepartment of Clinical Medicine, University of Bergen, NorwayBackground. Stroke aetiology may 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 examine frequencies, causes, and risk of 30-day readmission by stroke subtype, determine predictors of 30-day readmission, and study the impact of 30-day readmissions on one-year mortality. Methods. All surviving patients admitted with IS or TIA from July 2007 to December 2013 were followed by review of medical records for all unplanned readmissions within 30 days after discharge. Stroke subtype was classified as large-artery atherosclerosis (LAA), cardioembolism (CE), small vessel occlusion (SVO), stroke of other determined aetiology (SOE), or stroke of undetermined aetiology (SUE). Cox regression analyses were performed to assess the risk of 30-day readmission for the stroke subtypes and identify predictors of 30-day readmission, and its impact on one-year mortality. Results. Of 1874 patients, 200 (10.7%) were readmitted within 30 days [LAA 42/244 (17.2%), CE 75/605 (12.4%), SVO 12/205 (5.9%), SOE 6/32 (18.8%), SUE 65/788 (8.3%)]. The most frequent causes of readmissions were stroke-related event, infection, recurrent stroke/ TIA, and cardiac disease. After adjusting for age, sex, functional outcome, length of stay, and the risk factor burden, patients with LAA and SOE subtype had significantly higher risks of readmission for any cause, recurrent stroke or TIA, and stroke-related events. Predictors of 30-day readmission were higher age, peripheral arterial disease, enteral feeding, and LAA subtype. Thirty-day readmission was an independent predictor of one-year mortality. Conclusions. Patients with LAA or SOE have a high risk of 30-day readmission, possibly caused by an increased risk of recurrent stroke and stroke-related events. Awareness of the risk of readmission for different causes and appropriate handling according to stroke subtype may be useful for preventing some readmissions after stroke.http://dx.doi.org/10.1155/2018/7195369
spellingShingle Anna Therese Bjerkreim
Andrej Netland Khanevski
Henriette Aurora Selvik
Ulrike Waje-Andreassen
Lars Thomassen
Halvor Naess
Nicola Logallo
The Impact of Ischaemic Stroke Subtype on 30-day Hospital Readmissions
Stroke Research and Treatment
title The Impact of Ischaemic Stroke Subtype on 30-day Hospital Readmissions
title_full The Impact of Ischaemic Stroke Subtype on 30-day Hospital Readmissions
title_fullStr The Impact of Ischaemic Stroke Subtype on 30-day Hospital Readmissions
title_full_unstemmed The Impact of Ischaemic Stroke Subtype on 30-day Hospital Readmissions
title_short The Impact of Ischaemic Stroke Subtype on 30-day Hospital Readmissions
title_sort impact of ischaemic stroke subtype on 30 day hospital readmissions
url http://dx.doi.org/10.1155/2018/7195369
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