Right-sided Cardiac Resynchronization Therapy via Left Bundle Branch Area Pacing in a Patient with Persistent Left Superior Vena Cava.

Cardiac resynchronization therapy (CRT) via left bundle branch area pacing (LBBAP) has emerged as effective and safe as conventional CRT. Left-sided CRT implantation in patients with persistent left superior vena cava (PLSVC) is challenging and impossible in some patients. Right-sided CRT implantation, either conventional or LBBAP, is also tricky, as the delivery sheaths are feasible for left-sided implantations. Here, we present a patient with PLSVC who underwent successful right-sided CRT implantation via LBBAP.