title: Elective electroconversion of cardiac arrhythmias.
mesh_terms: D000293:Adolescent; D000328:Adult; D001145:Arrhythmias, Cardiac / Q000628:therapy*; D001281:Atrial Fibrillation / Q000628:therapy; D004554:Electric Countershock; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D013610:Tachycardia / Q000628:therapy