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.
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| http://dx.doi.org/10.1016/j.jelectrocard.2016.02.023 | DOI Listing |
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