Development of ventricular fibrillation after implantation of a biventricular implantable cardioverter defibrillator : what is the mechanism?

Abstract

Syncopal spells in heart failure patient with cardiovascular implantable electronic devices (CIED) require multiple assessments. T-wave oversensing is a welldescribed phenomenon that remains significant in modern implantable cardioverter defibrillators (ICD) systems. It can lead to inappropriate therapies and loss of biventricular pacing in those with cardiac resynchronization devices. Strategies to overcome this problem are important.