Simple cardiac pacemaker and defibrillator.
D001281:Atrial Fibrillation / Q000502:physiology*; D047548:Defibrillators; D006801:Humans; D010138:Pacemaker, Artificial; D012151:Resuscitation / Q000295:instrumentation*; D012849:Sinoatrial Node
AURICULAR FIBRILLATION/physiology; RESUSCITATION/apparatus and instruments