title: Tracking preference as unusual trigger of pacemaker-mediated tachycardia in a resynchronization device.
abstract: A 59-year-old woman with a history of congestive heart failure, who previously received a biventricular cardioverter-defibrillator was admitted with dyspnea and peripheral edema. She was noted on telemetry to have multiple self-terminated episodes of rapid ventricular pacing, consistent with pacemaker-mediated tachycardia. All episodes started after three consecutive ventricular extrasystoles. "Tracking preference" algorithm, designed to maintain atrial-tracked biventricular pacing in CRT devices, resulted turned on. It affected minimum PVARP and resulted the trigger for pacemaker mediated tachycardia.
authors.affiliation: Department of Clinical and Experimental Medicine, University of Messina. Electronic address: pasqualecrea@hotmail.it.
authors.forename: Pasquale
authors.initials: P
authors.lastname: Crea
authors.affiliation: Department of Clinical and Experimental Medicine, University of Messina.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Picciolo
authors.affiliation: Department of Clinical and Experimental Medicine, University of Messina.
authors.forename: Francesco
authors.initials: F
authors.lastname: Luzza
mesh_terms: D017147:Defibrillators, Implantable / Q000009:adverse effects*; D004868:Equipment Failure; D005260:Female; D006333:Heart Failure / Q000150:complications* / Q000517:prevention & control*; D006801:Humans; D008875:Middle Aged; D017180:Tachycardia, Ventricular / Q000175:diagnosis* / Q000209:etiology* / Q000517:prevention & control; D013813:Therapy, Computer-Assisted / Q000295:instrumentation* / Q000379:methods; D017211:Treatment Failure
keywords: Device algorithm; PVARP; Pacemaker-mediated tachycardia; Resynchronization device; Tracking preference