Single Coronary anomaly??

MY now 7 month old son was recently given a diagnosis of Abnormal Coronary Artery- single coronary with the RCA off the the left main and coursing between the great arteries.  With intermittent symptoms compatible with myocardial ischemia although he has normal cardiac dimensions and function.  The doctor clearly states in the report that they do not know what the significance of this anomaly is and further more told us to go home and they would check him in a year.  Of course I wasn't satisfied with that so I am seeking another opinion.  However after doing some research I want to know how effective is a nuclear stress test under sedation in a then 6 month old and does it provide enough information to send us home for a year no worries?  Would an cath. test be better and provide better information?  What should I be asking for in seeking this second opinion?

[Douglas Bogart, MD]

The best test for this is a CT- Coronary angiogram which your son may have had already.  The major question is how this should be treated and this is somewhat controversial.  A stress test may not be  predictive  of future events and the greatest risk will come with very vigorous activities like competitive athletics.  I would have your son seen at a large center for congenital heart disease and get their opinion.