I am so sorry about your grandson. My 14 year old grandson has a problem with his heart. Doctors have been watching it since he was born. He has to go for a stress test next week as he just made the Freshman football team. He may need an angioplasty. Our great grandson born May 21 has the same condition only more serious. He had an angioplasty interuterine four months before he was born. Granddaughter had to go to Boston for his birth and over a month after his birth. He had three or four angioplasties. They are watching him very closely. They may have to go back to Boston for more procedures. We pray and take it one day at a time. His seems to be a strong willed baby which is apparently helping him. Doctors and nurses in Boston were amazed at his progress. The power of prayer!!!