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Case Reports
. 2018 Jun 5;4(9):401-404.
doi: 10.1016/j.hrcr.2018.05.009. eCollection 2018 Sep.

T-wave oversensing due to left ventricle-only pacing in cardiac resynchronization therapy optimization algorithm

Philippe André  1 , Benoit Plourde  1 , Franck Molin  1 , Jean-Francois Sarrazin  1 , Jean Champagne  1 , François Philippon  1
Affiliations
Case Reports

T-wave oversensing due to left ventricle-only pacing in cardiac resynchronization therapy optimization algorithm

Philippe André et al. HeartRhythm Case Rep. .
No abstract available

Keywords: AdaptivCRT; Cardiac resynchronization therapy; Loss of biventricular pacing; Medtronic; T-wave oversensing.

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Figures

Figure 1
Figure 1
Occurrence of an episode of T-wave oversensing after a left ventricular (LV)-only pacing (AdaptivCRT ON). Top panel shows a telemetry strip with alternating biventricular (BiV) pacing and intrinsic QRS. Bottom panel shows an intracardiac electrogram (EGM) and markers. AR = sinus P wave in postventricular atrial refractory period; AS = sinus P wave with ventricular pacing (VP) (LV only); VS = oversensed T wave approximately 400 ms after VP; VS following AR = native conduction with left bundle branch block through the atrioventricular node, since no BiV/VP trigger by the AR.
Figure 2
Figure 2
Adequate biventricular pacing following turning off AdaptivCRT with left ventricular (LV)-only pacing. T-wave oversensing disappeared compared to LV-only stimulation. Top panel shows a telemetry strip following device modification. Bottom panel shows intracardiac electrogram (EGM) after turning Adaptiv LV to OFF. AS = sinus P wave.
See this image and copyright information in PMC

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