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Vol 19, No 2 (2012)
Interesting electrocardiograms
Submitted: 2013-01-24
Published online: 2012-03-30
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Paradoxical atrial undersensing by a dual chamber pacemaker during atrial fibrillation

S. Serge Barold, Bengt Herweg
Cardiol J 2012;19(2):207-209.

open access

Vol 19, No 2 (2012)
Interesting electrocardiograms
Submitted: 2013-01-24
Published online: 2012-03-30

Abstract

This report describes paradoxical atrial undersensing by a dual chamber pacemaker in a patient with paroxysmal atrial fibrillation. Atrial undersensing was present only when the device was programmed to a high sensitivity but sensing normalized when a lower sensitivity was programmed. This unusual response should be differentiated from the recently documented lock-in behavior of pacemakers delivering managed ventricular pacing. (Cardiol J 2012; 19, 2: 207–209)

Abstract

This report describes paradoxical atrial undersensing by a dual chamber pacemaker in a patient with paroxysmal atrial fibrillation. Atrial undersensing was present only when the device was programmed to a high sensitivity but sensing normalized when a lower sensitivity was programmed. This unusual response should be differentiated from the recently documented lock-in behavior of pacemakers delivering managed ventricular pacing. (Cardiol J 2012; 19, 2: 207–209)

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Keywords

pacemaker; paradoxical atrial undersensing; atrial fibrillation

About this article
Title

Paradoxical atrial undersensing by a dual chamber pacemaker during atrial fibrillation

Journal

Cardiology Journal

Issue

Vol 19, No 2 (2012)

Pages

207-209

Published online

2012-03-30

Page views

711

Article views/downloads

1958

Bibliographic record

Cardiol J 2012;19(2):207-209.

Keywords

pacemaker
paradoxical atrial undersensing
atrial fibrillation

Authors

S. Serge Barold
Bengt Herweg

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