We knew soon after the granddaughter was born that she was going to have heart surgery when she was 5, they did it when she was 4 and everything turned out great! Hope you have that experience with your grandson. We still joke (she's just turned 9 so doesn't quite get why it's so funny) about her waking up from the anesthesia and "complaining", ending with the statement, "This is the worst hotel I've ever stayed at!" She was 4, remember, and not in the habit of staying at hotels very often