title: Amiodarone-induced refractoriness to cardioversion.
mesh_terms: D000638:Amiodarone / Q000009:adverse effects*; D001572:Benzofurans / Q000009:adverse effects*; D004554:Electric Countershock / Q000295:instrumentation; D006352:Heart Ventricles; D006801:Humans; D008297:Male; D008875:Middle Aged; D013610:Tachycardia / Q000188:drug therapy / Q000503:physiopathology / Q000628:therapy*
chemical_list: D001572:Benzofurans; D000638:Amiodarone