As someone who puts patients to sleep on a daily basis, it is indeed the parents who would like valium (or Versed) after the kids are appropriately asleep for the ten minute surgical repair. That is because they love their kids so much and are worried sick about them. I would seriously wonder if a parent wasn't beside themselves with fear, even medical professionals who see anesthesia daily. Moms "need" the valium, but since they are driving, they don't get any.
Your little one will heal great and have a Superman story the rest of his life to go with the scar (if he gets one).