Inappropriate pauses during bradycardia pacing in a third-generation implantable cardioverter defibrillator.
Publication/Presentation Date
9-1-1997
Abstract
Many ICD devices have the capability for back up bradycardia pacing. Because of the use of a single sensing algorithm for both bradycardia and tachycardia functions, they may be prone to certain "sensing errors." Following implantation of an ICD in a patient with long QT syndrome, "inappropriate" pauses were noted during bradycardia pacing, which were exactly twice the programmed pacing cycle length. This was due to an automatic increase in the device's sensitivity during pacing, a characteristic of the automatic gain control of this particular ICD. Proper recognition of this ICD's special features, known as "lower threshold crossing," allowed noninvasive rectification of the problem and prevented these pauses.
Volume
20
Issue
9 Pt 1
First Page
2271
Last Page
2274
ISSN
0147-8389
Published In/Presented At
Cossú, S. F., Hsia, H. H., Simson, M. B., Hanna, M. S., & Clyne, C. A. (1997). Inappropriate pauses during bradycardia pacing in a third-generation implantable cardioverter defibrillator. Pacing and clinical electrophysiology : PACE, 20(9 Pt 1), 2271–2274. https://doi.org/10.1111/j.1540-8159.1997.tb04248.x
Disciplines
Medicine and Health Sciences
PubMedID
9309755
Department(s)
Department of Medicine
Document Type
Article