title: [Pacemaker ECG Quiz No. 23: Pacemaker malfunction or arrhythmia?].
abstract: In a 69-year-old patient, a DDDR pacemaker was implanted for sinus node disease with syncope due to sinus arrest with pauses > 4 s. Programming was performed carefully including measures to prevent unnecessary ventricular pacing. Approximately 6 months after implantation, the patient who was asymptomatic in the meantime presented for pacemaker control because the ECG had raised the question of pacemaker malfunction.
authors.affiliation: Klinik für Innere Medizin - Kardiologie und Angiologie in Bethel, Evangelisches Krankenhaus Bielefeld, Haus Gilead I, Burgsteig 13, 33617, Bielefeld, Deutschland. carsten.israel@evkb.de
authors.forename: C W
authors.initials: CW
authors.lastname: Israel
mesh_terms: D000368:Aged; D001283:Atrioventricular Node / Q000503:physiopathology; D003937:Diagnosis, Differential; D004562:Electrocardiography; D004868:Equipment Failure; D006325:Heart Atria / Q000503:physiopathology; D006327:Heart Block / Q000503:physiopathology; D006339:Heart Rate / Q000502:physiology; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial; D012804:Sick Sinus Syndrome / Q000503:physiopathology / Q000628:therapy*; D012984:Software; D013686:Telemetry