title: The effects of external defibrillation on permanent pacemakers.
mesh_terms: D001145:Arrhythmias, Cardiac / Q000628:therapy*; D004554:Electric Countershock / Q000009:adverse effects / Q000379:methods; D004868:Equipment Failure; D006801:Humans; D010138:Pacemaker, Artificial / Q000009:adverse effects