Abstract
The arterial switch operation has become the procedure of choice for patients with transposition of the great arteries(TGA) in most medical centres. Although atrial switching may occasionally be employed in some centres in cases with delayed diagnosis, pulmonary hypertension and some other unusual entities. We preferred to use the atrial switch operation - modified Senning procedure for 6 years 6 months old boy with TGA, small atrial septal defect (ASD) and patent ductus arteriosus (PDA).