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Pacemaker Mediated Tachycardia as a Complication of the Autointrinsic Conduction Search Function
Author(s) -
DENNIS MALCOLM J.,
SPARKS PAUL B.
Publication year - 2004
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.1540-8159.2004.00538.x
Subject(s) - medicine , cardiology , tachycardia , electrical conduction system of the heart , thermal conduction , beat (acoustics) , electrocardiography , acoustics , materials science , physics , composite material
The autointrinsic conduction search (AICS) option, featured on some DDD pacemakers, performs periodic assessments of atrioventricular (AV) conduction capability during a single beat AV delay extension. Demonstration of ventricular conduction during the prolonged AV delay, permits ongoing AV delay extension if the patient's intrinsic conduction is preferred to ventricular pacing. A case is presented where the wide separation of atrial and ventricular pacing during the conduction search permitted retrograde ventriculoatrial conduction, precipitating pacemaker mediated tachycardia (PMT) on seven occasions in one patient. Two onset patterns are reported, both attributable to the AICS option. Recommendations for prevention strategies are made. (PACE 2004; 27[Pt. I]:824–826)