Conclusion:
Cardiac resynchronization therapy with His-bundle pacing is feasible in patients with Scimitar syndrome. The use of advanced three-dimensional cardiac mapping integrated with fluoroscopy using software such as CARTOSEG™ and CARTOUNIVU™ assists in locating the critical cardiac landmarks when challenged with unconventional fluoroscopic views. Our case adds to the growing literature of successful His-bundle pacing for CRT in patients with congenital heart diseases.