Endocardial radio-frequency pacemaker.
D000818:Animals; D004285:Dogs; D004699:Endocardium; D006327:Heart Block / Q000601:surgery*; D006801:Humans; D009206:Myocardium / Q000473:pathology; D010138:Pacemaker, Artificial; D011845:Radio; D014680:Veins / Q000601:surgery; D014693:Ventricular Fibrillation / Q000628:therapy