Noninvasive Electrocardiographic Mapping of Ventricular Tachycardia in a Patient with a Left Ventricular Assist Device

Ventricular arrhythmias are common after left ventricular assist device (LVAD) implantation and have been associated with increased mortality.1 The burden of ventricular arrhythmias is high in these patients, with observational studies suggesting that as many as 20%–50% of patients experience ventricular arrhythmias after LVAD implantation.2,3 Mechanisms of arrhythmogenesis include physical contact between the inflow cannula and myocardium, myocardial scar, and electrolyte disturbances. Ventricular tachycardia (VT) can be difficult to manage medically, and catheter ablation is often necessary.