RT Journal A1 Dublin S, Lumley T, Glazer NL, et al T1 ATrial fibrillation, obesity, and obstructive sleep apnea—reply JF Archives of Internal Medicine JO Archives of Internal Medicine YR 2007 FD July 23 VO 167 IS 14 SP 1553 OP 1553 DO 10.1001/archinte.167.14.1553-a UL http://dx.doi.org/10.1001/archinte.167.14.1553-a AB Obstructive sleep apnea is most likely a consequence of obesity, and derangements caused by OSA are one mechanism through which obesity could lead to AF. Other possible mechanisms include left atrial enlargement and chronic inflammation. Unfortunately, our data did not allow us to explore the relative contributions of each of these mechanisms.