Hi Machka,
lungs and legs are much more important than brain, as a psychiatrist, I can tell you that our brain is essentially a nuisance !!!
I'm a total atheist so ... no prayers, but I believe the intensive care unit will do everything that's possible to get Rowan out of his brain trauma.
Clots and lung infections are frequents and not that terrible.
I'm not posting very often on BF, but I'm positively certain that Rowan will get out all of this without any real problems
Yves