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Voltage Dip in Pacemaker Battery Supply: A New Cause of Pacemaker Mediated Tachycardia
Author(s) -
STROOBANDT ROLAND,
VANDENBULCKE FILIEP,
FALLEYN HERMAN,
SINNAEVE ALFONS
Publication year - 1993
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1993.tb01663.x
Subject(s) - medicine , cardiology , tachycardia , ventricular tachycardia
A new cause of pacemaker medialed tachycardia was observed in a patient equipped with a Vitatron® Quintech 931 DDD pacemaker. In this type of pacemaker the microprocessor is switched off during the atrial refractory period. Beyond the recommended replacemenl lime, the internal resistance of the battery may increase to such an extent that switching on and off the microprocessor may cause voltage dips. Those voltage dips are erroneously interpreted as P waves hy the atrial sensing amplifier, which may cause self‐triggering of the pacemaker and initiate a pacemaker mediated tachycardia.