title: Delayed pulse generator malfunction after D.C. countershock.
abstract: Immediate pacemaker malfunction following defibrillation or cardioversion has been reported. In this paper we report one patient whose pacemaker appeared to be functioning normally after D. C. countershock but malfunctioned 13 days later manifested by changing from an R-wave inhibited to an R-wave synchronous mode.
mesh_terms: D000368:Aged; D004554:Electric Countershock; D004562:Electrocardiography; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial / Q000009:adverse effects*; D013997:Time Factors