Obviously, hand-washing and improved personal hygiene are a must. To the extent that you can, discourage your daughter from putting fingers and toys into her mouth. Pinworm infections, although more a nuisance than a serious health concern, are epidemic in certain parts of the country, especially the South. He assured us that such murmurs are common in babies and are not cause for concern, unless testing shows a serious cardiac problem. However, we worry that this could lead to later heart disease.
Heart murmurs in children are more the rule than the exception.
Nor do they alter normal development, but, obviously, your pediatrician will want to monitor your daughter's health and growth pattern. In fact, such monitoring is appropriate for all children, whether or not they have murmurs.