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Updated: Aug 7, 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
Electrical storm of monomorphic ventricular tachycardia after a cardiac-resynchronization-therapy-defibrillator
Bharat K Kantharia1, Jigar A Patel, Bipinpreet S Nagra
1Division of Cardiology, Albert Einstein Medical Center, 5501 Old York Road, Levy 3 East, Philadelphia, PA, USA. bkantharia@yahoo.com
Abstract:
In patients with significant left ventricular dysfunction and congestive heart failure despite optimal medical therapy, implantation of cardiac resynchronization therapy-defibrillation (CRT-D) devices has been shown to improve symptoms and mortality. In this report, we describe a case of a patient with ischaemic cardiomyopathy who developed incessant ventricular tachycardia (VT) after undergoing an upgrade from an implantable cardioverter defibrillator to a CRT-D device. The patient required multiple anti-arrhythmic agents, removal of the coronary sinus lead, and radiofrequency ablation to control VT. Thus, in rare patients, the CRT devices may potentially cause 'proarrhythmia' with serious consequences.
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