Abstract

Atrial fibrillation (AF) is the leading cause of a surge in hospital expenses for the treatment of strokes. However, evidence regarding clinical features and survival of patients admitted with acute ischemic stroke (AIS) plus AF in Ethiopia is lacking. We assess clinical characteristics, survival, and predictors of mortality of patients with acute ischemic stroke and atrial fibrillation among patients admitted to Tertiary Care Hospitals in Amhara regional state. A retrospective cohort study was done on patients diagnosed with AIS who received care at Tibebe Ghion and Felege Hiwot hospitals from November 2018 to November 2021. Data were analyzed using SPSS version 25. Cox regression analysis was used to identify predictors of in-hospital mortality. Kaplan-Meier analysis was used to identify survival rates and mean survival time. The hazard ratio was used as a measure of the strength of the association and statistical significance was declared at p-value <0.05. Of 378 patients with AIS, 58.7% were male. AF was diagnosed in 102 (26.9%) patients. Compared with patients without AF, patients with AF were more likely to have Glasgow Coma Scale <8 (83.3 vs 4%), valvular heart disease (56.9 vs 4.7%), and coronary heart disease (11.8 vs 4%). Patients with AF had a significant incidence of in-hospital mortality (38 per 1000 vs 17 per 1000) person-days. Glasgow Coma Scale <8: (AHR=12.69, 95% CI: [2.603-61.873]), aspirational pneumonia (AHR=2.602, 95% CI: 1.085-6.242), acute renal failure (AHR=6.114, 95% CI: [1.817-20.576]), hypokalemia (AHR=1.179, 95% CI: [1.112,-3.373]), atrial fibrillation (AHR=1.104, 95% CI: [1.015-5.404]), HIV/AIDS (AHR=8.302, 95% CI: [1.585-43.502]) and chronic liver disease (AHR=4.969, 95% CI: [1.192-20.704]) were indicators of in-hospital mortality. In the current study, hospital mortality was greater in AIS associated with atrial fibrillation. Stroke-related complications were significant predictors of mortality. Hence, effective strategies should be in place to curb the impacts of these factors.

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