BACKGROUND: Heavy alcohol consumption is a risk factor for developing atrial fibrillation, but whether chronic alcohol use affects left atrial volume is unknown. We evaluated the association of self-reported alcohol consumption with 5-year change in left atrial volume among patients with coronary heart disease (CHD). METHODS: We studied 601 participants with stable CHD who underwent 2-dimensional echocardiography at baseline (2000-2002) and after 5 years of follow-up (2005-2007). Alcohol consumption was determined at baseline with the use of the Alcohol Use Disorders Identification Test consumption questions (AUDIT-C), with a standard cutoff point of ≥3 used to define at-risk drinking. We used logistic regression to evaluate the association of baseline alcohol use with 5-year increase in left atrial end-systolic volume index (defined as being in the highest tertile of percent change). RESULTS: After adjustment for covariates, each standard deviation (2.4-point) increase in AUDIT-C score was associated with a 24% greater odds of experiencing a 5-year increase in left atrial volume index (adjusted odds ratio [OR] 1.24, 95% confidence interval [CI] 1.04-1.48; P = .02). Compared with the 369 participants who had AUDIT-C scores of <3, the 171 participants with scores of 3-5 had a 51% greater odds (OR 1.51, 95% CI, 1.11-2.25) and the 61 participants with scores of >5 a 98% greater odds (OR 1.98, 95% CI, 1.10-3.56) of experiencing a 5-year increase in left atrial volume index. CONCLUSIONS: In patients with CHD, heavier alcohol consumption is associated with a 5-year increase in left atrial volume. Whether greater left atrial volume contributes to the increased risk of atrial fibrillation associated with alcohol use deserves further study. Published by Elsevier Inc.
BACKGROUND: Heavy alcohol consumption is a risk factor for developing atrial fibrillation, but whether chronic alcohol use affects left atrial volume is unknown. We evaluated the association of self-reported alcohol consumption with 5-year change in left atrial volume among patients with coronary heart disease (CHD). METHODS: We studied 601 participants with stable CHD who underwent 2-dimensional echocardiography at baseline (2000-2002) and after 5 years of follow-up (2005-2007). Alcohol consumption was determined at baseline with the use of the Alcohol Use Disorders Identification Test consumption questions (AUDIT-C), with a standard cutoff point of ≥3 used to define at-risk drinking. We used logistic regression to evaluate the association of baseline alcohol use with 5-year increase in left atrial end-systolic volume index (defined as being in the highest tertile of percent change). RESULTS: After adjustment for covariates, each standard deviation (2.4-point) increase in AUDIT-C score was associated with a 24% greater odds of experiencing a 5-year increase in left atrial volume index (adjusted odds ratio [OR] 1.24, 95% confidence interval [CI] 1.04-1.48; P = .02). Compared with the 369 participants who had AUDIT-C scores of <3, the 171 participants with scores of 3-5 had a 51% greater odds (OR 1.51, 95% CI, 1.11-2.25) and the 61 participants with scores of >5 a 98% greater odds (OR 1.98, 95% CI, 1.10-3.56) of experiencing a 5-year increase in left atrial volume index. CONCLUSIONS: In patients with CHD, heavier alcohol consumption is associated with a 5-year increase in left atrial volume. Whether greater left atrial volume contributes to the increased risk of atrial fibrillation associated with alcohol use deserves further study. Published by Elsevier Inc.
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