title: Electric control of the heart. Pacemakers, cardioversion and defibrillation. I.
mesh_terms: D001024:Aortic Valve Stenosis / Q000150:complications; D001145:Arrhythmias, Cardiac / Q000209:etiology / Q000503:physiopathology / Q000628:therapy; D006348:Cardiac Surgical Procedures / Q000009:adverse effects; D003327:Coronary Disease / Q000150:complications; D004554:Electric Countershock; D004562:Electrocardiography; D004567:Electrodes, Implanted; D004582:Electronics, Medical; D006327:Heart Block / Q000503:physiopathology; D006329:Heart Conduction System / Q000033:anatomy & histology / Q000098:blood supply / Q000502:physiology / Q000503:physiopathology; D006801:Humans; D008722:Methods; D010138:Pacemaker, Artificial / Q000295:instrumentation; D013997:Time Factors