Atrial fibrillation among adults with heart failure in a tertiary hospital in Angola: a retrospective study
DOI:
https://doi.org/10.54283/eRACSaude.v4i1.2023.02Keywords:
atrial fibrillation, Heart failure, cardiovascular risk factors, Angola, Sub-Saharan AfricaAbstract
Introduction: Atrial fibrillation (AF) is the most common sustained arrhythmia in the adult population. The objective of this research is to determine the frequency, etiology, evolution, treatment, and evolution of patients diagnosed with AF admitted for heart failure (HF) in a tertiary hospital in Luanda, Angola. Methods: This is a descriptive, retrospective, observational, and cross-sectional study on the clinical profile of patients diagnosed with AF admitted for HF in a tertiary public hospital in Luanda, Angola. Of the 461 patients admitted with HF, 32 (6.9%) individuals were detected with AF. The normality of data distribution was analyzed using the Shapiro-Wilks test. Qualitative variables were expressed in absolute and relative frequencies. Quantitative variables were expressed as mean ± standard deviation (SD) or median. Results: The average age of participants was 59.56±15.9 years and 65.6% of the sample was female. The frequency of AF was 6.9%. The main risk factors were arterial hypertension (68.8%) and alcoholic habits (46.9%). The main causes of HF were hypertensive heart disease, 19(59.4%), dilated cardiomyopathy, 8(25%) and rheumatic mitral valve disease, 5(15.6%). Warfarin was prescribed in 8 (25%) individuals, aspirin in 21 (65.6%), use of beta-blockers in 15 (46.9% individuals, digoxin in 14 (43.8%), and amiodarone in (9.4%). The most frequent complications were: stroke in 15(46.8%). There were 6 deaths (3 due to cardiogenic shock and 3 due to acute pulmonary edema). Conclusion: Our study shows a low frequency of atrial fibrillation compared to that found in similar studies in sub-Saharan Africa.
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