title: Nonsynchronized direct-current countershock.
mesh_terms: D000818:Animals; D001145:Arrhythmias, Cardiac / Q000209:etiology / Q000628:therapy*; D004285:Dogs; D004554:Electric Countershock / Q000009:adverse effects / Q000379:methods*; D004560:Electricity; D006801:Humans; D013997:Time Factors