Cardiac Resynchronization Therapy in Situs Inversus Totalis and Congenitally Corrected Transposition of Great Arteries.

This paper presents a patient with situs inversus totalis and congenitally corrected transposition of the great arteries, with pacing-induced cardiomyopathy and severe systemic atrioventricular valve regurgitation. The patient underwent upgrade to cardiac resynchronization therapy with addition of a systemic right ventricular free wall pacing lead implanted through the coronary sinus.