Maintenance of sinus rhythm after conversion of atrial fibrillation. Relation to fibrillatory wave size.
D001145:Arrhythmias, Cardiac / Q000628:therapy*; D001281:Atrial Fibrillation / Q000628:therapy*; D004554:Electric Countershock; D006321:Heart / Q000503:physiopathology; D006801:Humans; D008875:Middle Aged