A ventricular septal defect (VSD) is a hole in the wall separating the two lower pumping chambers of the heart, and they are quite common in children. Most often they are small to moderate in size and gradually improve over time on their own. Occasionally they are large in size, or multiple, in which case, the work of the heart becomes less efficient. Extra blood flows to the lungs instead of the body, and this can result in babies feeding poorly, breathing fast and not gaining weight well. Under these circumstances, surgery may be indicated if medication alone does not help. I do not know what medication the doctor prescribed for the baby, so I cannot comment on that. If possible, the child should be evaluated by a pediatric cardiologist to give a better opinion as to the prognosis of this child's VSD. It is also important to know if the VSD is the only problem, or if there are other associated heart problems, such as a narrowing of the aorta called a coarctation.
If doctor had diagnosed that the child has VSD then he should have done an Echo. If that is already done then I suggest you should take the child to a pediatric cardiologist. He will be able to guide you properly.Now depending upon the size of the VSD and the place if its sub Aortic (Mean just below the Aortic valve) or lower he will suggest you. I dont know the place where you are then I could have suggested some doctors name in India. So without any delay visit a pediatric cardiologist and not just any cardiologist. N belive me all will be F9.