Fine vs. Coarse Atrial Fibrillation: Which One is More Risky?

<i>Background:</i> Atrial fibrillation (AF) is a frequent arrhythmia, associated with morbidity and mortality. It is identified by two types on surface electrocardiogram as fine and coarse AF. We aimed to search the association of subtypes of AF with clinical parameters. <i>Methods:</i> Eight hundred and eleven consecutive patients, who had AF attack which lasted longer than 24 h or more, were evaluated along with...