Cardiac Resynchronization Therapy Upgrade in a Patient with Dextrocardia and Situs Inversus Totalis, Facilitated by Coronary Sinus Cannulation with Electrophysiology Catheters from Both Femoral and Axillary Venous Approaches.

Cardiac resynchronization therapy in patients with dextrocardia with situs inversus totalis can be technically challenging. There are few case reports of cardiac resynchronization therapy implantation in these individuals. Here, we describe a procedure of cardiac resynchronization therapy upgrade in a patient with dextrocardia and situs inversus totalis facilitated by coronary sinus cannulation from both the femoral and axillary venous approaches.