T wave oversensing and low percentage of biventricular pacing in cardiac resynchronization therapy

The success of cardiac resynchronization therapy (CRT) depends on a high percentage of ventricular pacing. We present the electrocardiography and electrograms of a patient who underwent an implantable cardioverter-defibrillator (ICD) with CRT implantation showing a low percentage of ventricular paci...

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Veröffentlicht in:	Cardiology journal 2009, Vol.16 (6), p.580-581
Hauptverfasser:	Lezcano, Antonio O Luque, Aracama, Jose Manuel Porres, Ayestaran, Vicente Urbistondo, Urra, Francisco Garcia
Format:	Artikel
Sprache:	eng
Schlagworte:	Cardiac Pacing, Artificial Cardiomyopathy, Dilated - complications Cardiomyopathy, Dilated - physiopathology Cardiomyopathy, Dilated - therapy Defibrillators, Implantable Electric Countershock - instrumentation Electrocardiography Electrophysiologic Techniques, Cardiac Equipment Failure Heart Conduction System - physiopathology Heart Failure - etiology Heart Failure - physiopathology Heart Failure - therapy Humans Male Middle Aged Pacemaker, Artificial Signal Processing, Computer-Assisted Treatment Failure
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Zusammenfassung:	The success of cardiac resynchronization therapy (CRT) depends on a high percentage of ventricular pacing. We present the electrocardiography and electrograms of a patient who underwent an implantable cardioverter-defibrillator (ICD) with CRT implantation showing a low percentage of ventricular pacing as a result of T wave oversensing of paced QRS. The patient showed no clinical improvement. We suggest finding a good sensitivity of F waves in induced ventricular fibrillation during ICD implantation in order to overcome the harm of possible oversensing.
ISSN:	1897-5593