Congenital heart disease is a common abnormality in newborns. The marked improvement in the surgical management of congenital heart disease has led to a reduction in postoperative mortality, historically a quality criterion for surgical and resuscitation management. With the improvement of medical knowledge and surgical techniques, mortality is no longer a single quality criterion for a center and the search for other quality criteria is essential.

Inclusion criteria:

• Minor patients, under the age of 18
• operated at the HUS between 01/01/2010 and 03/31/2022 for transposition surgery of the great vessels (arterial switch) with or without CIV; or isolated ventricular septal closure
• Child or holders of parental authority who do not object to the reuse of their data for scientific research purposes.

Exclusion criteria:

• Transposition surgery of the great vessels associated with coarctation of the aorta, pulmonary stenosis or any other complex malformation
• Surgical technique different from the arterial switch for the transpositions of the great vessels
• Closure of interventricular communication associated with another complex heart malformation (tetralogy of Fallot, atrioventricular canal, right ventricle with double outlet, etc.)
• Child or holders of parental authority who have expressed their opposition to the reuse of their data for scientific research purposes.

Minor patients, under the age of 18 operated at the HUS between 01/01/2010 and 03/31/2022 for transposition surgery of the great vessels (arterial switch) with or without CIV; or isolated ventricular septal closure