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Updated: Jun 18, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
Published on: December 11, 2017
T wave oversensing and low percentage of biventricular pacing in cardiac resynchronization therapy
Antonio O Luque Lezcano1, Jose Manuel Porres Aracama, Vicente Urbistondo Ayestaran
1Hospital Donostia Arrythmia Unit, Intensive Care Department, Donostia, Spain. oskar.luke@gmail.com
Abstract:
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.
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