title: Electrophysiologic studies on Mobitz type II second-degree heart block.
mesh_terms: D000818:Animals; D002037:Bundle-Branch Block / Q000209:etiology; D046508:Culture Techniques; D004558:Electric Stimulation; D004562:Electrocardiography; D006327:Heart Block / Q000150:complications / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology*; D006329:Heart Conduction System / Q000503:physiopathology*; D009040:Motion Pictures; D009203:Myocardial Infarction / Q000150:complications; D010042:Ouabain / Q000009:adverse effects; D010138:Pacemaker, Artificial / Q000009:adverse effects; D010781:Photography; D011817:Rabbits; D014630:Vagus Nerve / Q000503:physiopathology
chemical_list: D010042:Ouabain