Abstract

Meticulous transfer of coronary arteries is of crucial importance in transposition of great arteries and determines the success of the switch procedure. This report describes a coronary anatomy consisting of four separate ostia from the two facing sinuses in a six-month-old infant presenting with d-transposition of great arteries and ventricular septal defect. Being a rare coronary arterial pattern not described in previous coding systems, the surgeon would do well to be aware of this possibility while performing the switch procedure.