Both of these diseases are types of congenital heart disease, and if there are issues with either of them, the situation can be quite severe. There isn't a distinction between which disease is severe and which is not.

If the arterial duct remains open or does not close, surgery is still required for this condition. Patients with ventricular septal defect primarily display changes related to ischemia and hypoxia, and they may also experience recurrent respiratory infections, which are quite serious. Surgery is generally the best treatment. Early surgical intervention can achieve a complete cure, but it is also advisable for the patient to have regular echocardiographic check-ups at the hospital.