I have yet to see significant vomiting in a pulseless patient... I have seen patients vomit significantly after a ROSC though!

Funny how so many people focus on the broken rib thing, sure it happens (but not as often as the public believes) but I have yet to see adverse effects in saves... and like MDiana says there are DEAD! Besides, how many broken ribs in "healthy" patients lead to injuries to underlying organs?