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Delayed Restoration of Atrioventricular Synchrony with Beat‐to‐Beat Mode Switch
Author(s) -
BODE FRANK,
WIEGAND UWE K.H.,
PETERS WERNER,
KATUS HUGO A.
Publication year - 2001
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 - 10.1046/j.1460-9592.2001.01286.x
Subject(s) - medicine , beat (acoustics) , bradycardia , rhythm , cardiology , atrioventricular block , cardiac pacing , heart block , anesthesia , heart rate , electrocardiography , acoustics , blood pressure , physics
BODE, F., et al. : Delayed Restoration of Atrioventricular Synchrony with Beat‐to‐Beat Mode Switch. This case report describes a patient with complete AV block and a VDD pacemaker who experienced repetitive episodes of symptomatic bradycardia. Episodes occurred due to activation of an automatic beat‐to‐beat mode switch algorithm. After mode switch to VDI operation, the pacemaker failed to immediately switch back to AV synchronous pacing when regular sinus rhythm (≥ 100 beats per minute) resumed despite adequate P wave sensing. Dizziness was felt for up to several minutes of asynchronous pacing at the lower rate limit until VDD mode was restored. Episodes were completely eliminated by programming the mode switch function from an automatic beat‐to‐beat algorithm to a fixed rate algorithm.