Doppler Echocardiography of 6 months after cardiac catheterization: the severity of PS remarkably decrease in Echocardiography. Doppler Echocardiography show the peak systolic Pulmonary alular pressure gradient decrease more versus before cardiac catheterization after third day is 24.8 mmHg (100% patient were followed up); after 1 month is 26.18 mmHg (64% patient were followed up) and continue to decrease 26.6 mmHg after 3 months (40% patient were followed up).