2017•Indian Pacing and Electrophysiology JournalOpen access

Right bundle branch block pattern after uncomplicated right ventricular outflow tract pacing in a patient with a left sided superior vena cava and corrected tetralogy of Fallot

Anunay Gupta, Neeraj Parakh, Rajnish Juneja

Abstract

Usually an electrocardiogram after right ventricular (RV) pacing should yield left bundle branch block (LBBB) pattern. However, the presence of right bundle branch block (RBBB) pattern after pacemaker implantation should alert the physician to a malposition of lead. We report a case of 18-year-old female who underwent dual chamber pacemaker implantation and had RBBB pattern post implantation. Detailed evaluation revealed an uncomplicated right ventricular outflow tract pacing. The possible causes of this abnormal pattern after an uncomplicated RV pacing are also reviewed.

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Available abstract

Key concepts: Medicine, Ventricular outflow tract, Right bundle branch block, Cardiology, Tetralogy of Fallot, Internal medicine, Left bundle branch block, Ventricular pacing