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Atrial fibrillation is a predictor of in-hospital mortality in ischemic stroke patients

Authors Ong C, Wong Y, Wu C, Su Y

Received 3 February 2016

Accepted for publication 21 April 2016

Published 29 June 2016 Volume 2016:12 Pages 1057—1064


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Professor Deyun Wang

Cheung-Ter Ong,1,2 Yi-Sin Wong,3 Chi-Shun Wu,1 Yu-Hsiang Su1

1Department of Neurology, Chia-Yi Christian Hospital, 2Department of Nursing, Chung Jen Junior College of Nursing, Health Science and Management, Chiayi, 3Department of Family Medicine, Chia-Yi Christian Hospital, Chiayi, Taiwan, Republic of China

Background/purpose: In-hospital mortality rate of acute ischemic stroke patients remains between 3% and 18%. For improving the quality of stroke care, we investigated the factors that contribute to the risk of in-hospital mortality in acute ischemic stroke patients.
Materials and methods: Between January 1, 2007, and December 31, 2011, 2,556 acute ischemic stroke patients admitted to a stroke unit were included in this study. Factors such as demographic characteristics, clinical characteristics, comorbidities, and complications related to in-hospital mortality were assessed.
Results: Of the 2,556 ischemic stroke patients, 157 received thrombolytic therapy. Eighty of the 2,556 patients (3.1%) died during hospitalization. Of the 157 patients who received thrombolytic therapy, 14 (8.9%) died during hospitalization. History of atrial fibrillation (AF, P<0.01) and stroke severity (P<0.01) were independent risk factors of in-hospital mortality. AF, stroke severity, cardioembolism stroke, and diabetes mellitus were independent risk factors of hemorrhagic transformation. Herniation and sepsis were the most common complications of stroke that were attributed to in-hospital mortality. Approximately 70% of in-hospital mortality was related to stroke severity (total middle cerebral artery occlusion with herniation, basilar artery occlusion, and hemorrhagic transformation). The other 30% of in-hospital mortality was related to sepsis, heart disease, and other complications.
Conclusion: AF is associated with higher in-hospital mortality rate than in patients without AF. For improving outcome of stroke patients, we also need to focus to reduce serious neurological or medical complications.

Keywords: brain infarction, atrial fibrillation, outcome, risk factors, thrombolytic therapy

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