title: Failure of demand pacemaker sensing due to electrode fracture.
mesh_terms: D000219:Adams-Stokes Syndrome / Q000601:surgery; D000368:Aged; D001145:Arrhythmias, Cardiac / Q000175:diagnosis / Q000209:etiology; D001919:Bradycardia / Q000601:surgery; D002037:Bundle-Branch Block / Q000601:surgery; D003937:Diagnosis, Differential; D006801:Humans