Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia in clinical practice and leads to twice the mortality of that among people in sinus rhythm. 1 The prevalence of AF rises with age from 0·05% among people aged 25—35 years to more than 5% among those older than 69 years. 2 AF is more common among men than women, but data for non-white patients are scarce. Although principally an acquired disease, rare familial cases of AF have been described associated with abnormalities of chro ...
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a Department of Internal Medicine, Washington University School of Medicine, Saint Louis, Missouri, USA
Correspondence to: Dr Sanjiv M Narayan, Electrophysiology Service, Cardiovascular Division, Department of Internal Medicine, Washington University School of Medicine, 660 South Euclid Avenue, Box 8086, Saint Louis, Missouri 63110, USA