My brother was taken to the ER and we were told he had an elarged heart. He is 9 years old and was born with a murmur. In the past month he has had a lot of stress. Loosing a beloved grandfather, who was very impotant to him. And with school. Because of learning problems. In the past month he had starting complaining with his chest hurting. And when his heart would beat really, really fast. So I was wondering if stress could have caused this. Or if it could be a factor? If not what could have caused this? He had had the flu the week before. Is there a treatment? Could he live a normal life with a enlarged heart? I would really appreciate any help. Thanks, Heather