Assessment of cardiac pacemakers: pacemaker frontal plane vectors.
D006348:Cardiac Surgical Procedures; D004562:Electrocardiography; D004699:Endocardium; D006321:Heart / Q000000981:diagnostic imaging; D006327:Heart Block / Q000628:therapy; D006801:Humans; D010138:Pacemaker, Artificial / Q000009:adverse effects / Q000295:instrumentation / Q000592:standards; D011859:Radiography