Journal
EUROPEAN HEART JOURNAL
Volume 33, Issue 21, Pages 2709-2717Publisher
OXFORD UNIV PRESS
DOI: 10.1093/eurheartj/ehs301
Keywords
Atrial fibrillation; Cardiovascular risk factors; Echocardiography; Risk prediction
Categories
Funding
- National Heart, Lung, and Blood Institute (NHLBI) [N01-HC-85239, N01-HC-85079, N01-HC-85086, N01-HC-35129, N01 HC-15103, N01 HC-55222, N01-HC-75150, N01-HC-45133, HL094555, HL080295, HL068986]
- National Institute of Neurological Disorders and Stroke (NINDS)
- National Institute on Aging (NIA) [AG-023629, AG-15928, AG-20098, AG-027058]
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Aims Atrial fibrillation (AF) is the most common sustained arrhythmia. Increased body size has been associated with AF, but the relationship is not well understood. In this study, we examined the effect of increased height on the risk of AF and explore potential mediators and implications for clinical practice. Methods and results We examined data from 5860 individuals taking part in the Cardiovascular Health Study, a cohort study of older US adults followed for a median of 13.6 (women) and 10.3 years (men). Multivariate linear models and age-stratified Cox proportional hazards and risk models were used, with focus on the effect of height on both prevalent and incident AF. Among 684 (22.6%) and 568 (27.1%) incident cases in women and men, respectively, greater height was significantly associated with AF risk [hazard ratio (HR)(women) per 10 cm 1.32, confidence interval (CI) 1.16-1.50, P < 0.0001; HRmen per 10 cm 1.26, CI 1.11-1.44, P < 0.0001]. The association was such that the incremental risk from sex was completely attenuated by the inclusion of height (for men, HR 1.48, CI 1.32-1.65, without height, and HR 0.94, CI 0.85-1.20, with height included). Inclusion of height in the Framingham model for incident AF improved discrimination. In sequential models, however, we found minimal attenuation of the risk estimates for AF with adjustment for left ventricular (LV) mass and left atrial (LA) dimension. The associations of LA and LV size measurements with AF risk were weakened when indexed to height. Conclusion Independent from sex, increased height is significantly associated with the risk of AF.
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