title: Early failures of permanently implanted transvenous pacemaker systems: spontaneous recovery of sensing function in three of twelve cases.
abstract: An analysis of 12 early pacemaker failures in a series of 128 transvenous implants is reported. Spontaneous recovery, maintained during long-term follow-up of 3 patients with isolated transient sensing failure, suggested the possibility of a transient loss of sensing voltage amplitude, or slew rate (dv/dt), or both. Conservative management is frequently indicated in these cases. In 62 patients in whom a "tined" lead was used, there were no early pacemaker failures.
mesh_terms: D000328:Adult; D000368:Aged; D006332:Cardiomegaly / Q000150:complications; D004562:Electrocardiography; D005260:Female; D005500:Follow-Up Studies; D006331:Heart Diseases / Q000503:physiopathology / Q000628:therapy*; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial / Q000009:adverse effects / Q000295:instrumentation*