Inappropriate pacing in a patient with managed ventricular pacing: what is the cause?
A case of inappropriate atrial pacing in a patient with a pacemaker programmed with Managed Ventricular Pacing (MVP) mode, a proprietary algorithm in Medtronic devices, is presented. The patient was an 84-year-old woman who presented in sinus rhythm with complete atrioventricular block. A dual-chamber pacemaker was implanted and programmed to an MVP pacing mode. After the implant, the patient developed a relatively slow atrial tachyarrhythmia with 2:1 atrioventricular block and inappropriate atrial pacing, followed by a delay in tracking of the atrial tachyarrhythmia. The mechanisms for these behaviors are described.
Perez
Marco V
MV
Cardiac Arrhythmia Service, Division of Cardiovascular Medicine, Stanford University, Stanford, California, USA. mvperez@stanford.edu
Al-Ahmad
Amin A
AA
Wang
Paul J
PJ
Turakhia
Mintu P
MP
D000369:Aged, 80 and over; D054537:Atrioventricular Block / Q000503:physiopathology / Q000628:therapy*; D002304:Cardiac Pacing, Artificial / Q000009:adverse effects*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D013612:Tachycardia, Ectopic Atrial / Q000209:etiology* / Q000503:physiopathology