The child is congenital heart disease, ventricular septal defect (perimembranous), the small infant defect of more than 6 mm is a relatively large defect, now often shortness of breath and choking, and ventricular level bidirectional shunt, indicating that the child has more serious pulmonary hypertension, more reasonable and effective treatment is the early surgical repair of the defect, drugs can only be used as an adjunctive treatment measures, it is difficult to make the defect heal, and the existence of the defect is the root cause of the current situation.