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The Influence of Obesity on the Association of Obstructive Sleep Apnea and Atrial Fibrillation
Stafford Patrick L.,Harmon Evan K.,Patel Paras,Walker McCall,Lin Gen-Min,박승정,Chatterjee Neal A.,Mehta Nishaki K.,Mazimba Sula,Bilchick Kenneth,권영훈 대한수면학회 2021 sleep medicine research Vol.12 No.1
Background and Objective The association between obstructive sleep apnea (OSA) and atrial fibrillation (AF) has been closely studied. However, obesity is a powerful confounder in the causal relationship between OSA and cardiovascular disease. The contribution of obesity in the relationship between OSA and AF remains unclear. Methods We recruited 457 consecutive patients equally with and without AF who underwent clinically indicated diagnostic polysomnography at a single academic sleep center. Multivariable logistic regression adjusting for age, sex, hypertension, and heart failure was performed to study the independent association between OSA and AF stratified by obesity. Results A total of 457 patients (male: 56.2%, mean age 63.1 ± 13.3 years) was included. OSA prevalence was similar between those with and without AF (52.6% vs. 47.4%, respectively; p = 0.24). In multivariable analysis, no association was found between AF and OSA regardless of obesity status. When severe OSA (vs. non-severe OSA) was modeled as a dependent variable, AF was associated with a higher likelihood of severe OSA in non-obese patients [odds ratio (OR): 2.29, 95% confidence interval (CI): 1.23–4.35, p = 0.01], but not in obese patients (OR: 0.95, 95% CI: 0.48–1.90, p = 0.89). Conclusions The association of OSA with AF was present only in the non-obese and was limited to severe OSA patients. In contrast, no association was found in obese patients. The association between OSA and AF is partly dependent on the body habitus