Electronic ventricular pacing at the end of the QRS complex: Is it abnormal?

J Electrocardiol

Department of Medicine, Section of Cardiology, Baylor College of Medicine, Houston, TX, USA; Texas Heart Institute at Baylor St. Luke's Medical Center, Houston, TX, USA; Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX, USA.

Published: June 2024

An 82-year-old man with ischemic cardiomyopathy, heart failure with reduced ejection fraction and Medtronic biventricular ICD presented with shortness of breath. His ECG is presented with shortness of breath. ECG shows atrial sensed, electronic ventricular pacing. At the end of each QRS complex there is another pacemaker stimulus. This represents typical case of cardiac contractility modulation therapy and not pacemaker malfunction.

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http://dx.doi.org/10.1016/j.jelectrocard.2024.02.008DOI Listing

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