Outcomes:
The primary outcome was the total peak gradient across the main
pulmonary artery (MPA), right pulmonary artery (RPA), and left pulmonary
artery (LPA); thereby, total peak gradient (TPG)= MPA+RPA+LPA measured
by echocardiography in the postoperative period (pre-discharge
echocardiogram). The secondary outcome was the reintervention by means
of percutaneous or surgical intervention.