No one goes before there time. All the dire or positive predictions of men mean nothing in the light of Jesus Christ. Whatever may come, trust that there is a reason for it. Speaking from a personal standpoint, I've been dead, 10 to 15 minutes no heart beat, no breathing, nothing depending on which report your reading (police or EMT). Every now and then I pull out copies of those reports and the police photos to remind me of this as I did just a few minutes ago. 2000 pounds of steel, glass, and rubber at 60mph will put a severe hurt on person standing in it's way. There is no medical explanation why I am still here 25 years as of today for this (Sept. 7, 1982). I should have remained dead, and if not, I should be brain dead. (some say I am but that is another story). Some give me slack about it, but it's something that cannot be understood except by those who've experienced it. However; rest assured from someone who has been to the other side and back, If it is Gods will, your son will pull through it. That Doctor is nothing but a tool of God, and faith and prayer in/to his Son is the real power. I am living proof of the power of God. Believe in him, and nothing is impossible.
With all my prayers for you son,
Gerald