ArticleHeart rhythm O22026
Prevalence, clinical characteristics, and associated factors of atrial fibrillation among adults 60 years and older attending noncardiac outpatient clinics at a tertiary hospital in Tanzania: A cross-sectional study.
Article in Heart rhythm O2, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Atrial fibrillation (AF) is the most common cardiac arrhythmia worldwide and is associated with an increased risk of adverse outcomes. Age is an important risk factor for AF with a sharp rise in prevalence after the age of 60 years. Despite a rising share of older adults in Africa, there is a paucity of data regarding AF burden in this demographic. Objective: This study aimed to determine the prevalence, clinical characteristics, and associated factors of AF among adults 60 years and older attending noncardiac outpatient clinics at a tertiary hospital in Tanzania. Methods: We conducted a cross-sectional study among consenting adults aged 60 years and older at noncardiac outpatient clinics of Muhimbili National Hospital from June 2021 to February 2022. A structured questionnaire was used to collect sociodemographic and clinical characteristics of participants. They were screened for AF using a smartphone-connected single-lead electrocardiography (ECG) device (KardiaMobile, AliveCor). Probable AF was confirmed by 12-lead ECG. Multivariable logistic regression was used to determine factors associated with AF. Data analysis was performed using Stata version 13 (StataCorp LLC). Results: A total of 1055 patients were enrolled with a median age of 67 years (interquartile range [IQR] 62-72). AF was detected in 44 participants (4.2%). Only 1 participant with AF was previously diagnosed. Most patients with AF had high CHA Conclusion: AF is common and underdiagnosed and carries a high stroke risk among elderly outpatients in Tanzania. Opportunistic screening of the elderly for AF in low-resource countries with 1-lead ECG is feasible and has the potential to reduce the burden of stroke.
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