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Inappropriate pacing in a patient with managed ventricular pacing: what is the cause?
Marco V Perez1, Amin A Al-Ahmad, Paul J Wang
1Cardiac Arrhythmia Service, Division of Cardiovascular Medicine, Stanford University, Stanford, California, USA. mvperez@stanford.edu
Abstract:
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.
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