The time for recovery of pulmonary artery pressure after ventricular septal defect surgery needs to be judged according to the severity of pulmonary hypertension before surgery and whether the surgery is timely. Generally speaking, for patients with mild pulmonary hypertension, if the ventricular septal defect repair surgery is performed early, the pulmonary artery pressure can usually return to normal 3-6 months after surgery. If the patient has a ventricular septal defect with moderate or severe pulmonary hypertension before surgery, pulmonary artery pressure may take more than 1 year to gradually return to normal after surgery. In some patients with other underlying heart diseases, the recovery time is even longer. If you feel unwell after ventricular septal defect surgery, it is recommended that you seek medical attention in time and under the guidance of your doctor to avoid adverse consequences.