It's more to do with the fact that the guys whack to the head caused him to get into such a state of unconsciousness, that the inevitable cardiac arrest ( not heart attack, they are different things), although a heart attack often leads to a cardiac arrest, occurred. When you are properly unconcious for any significant length of time, you will need CPR fairly quickly. The cardiac arrest part, is the inevitable consequence of a proper spark out.
Yes - my bad. I was using colloquial English, in which "heart attack" is used interchangeably with "cardiac arrest".
Pulling what you're saying apart:
"A whack to the head led to unconsciousness" - that's possible, although it's your assumption in this case.
"It was so severe that it led to "inevitable" cardiac arrest" - that's what I'm struggling with. I've searched reasonably diligently, and can't actually find any evidence of this being other than a remote possibility in the event of
really serious head injury - of the sort that would crush a helmet, a skull and large chunks of brain. Certainly it seems far from "inevitable".
"When you are properly unconscious for any length of time you will need CPR" - I'm no medic, but I simply don't believe that. Coma patients don't need CPR as the heart can carry on beating long after the rest of the body's functions have given up the ghost.
"The cardiac arrest part is the inevitable consequence of a proper spark out" - that's the bit I'm inviting you to reconsider.
The whole hit head - cardiac arrest - CPR scenario seems far less likely than a very simple, and sadly all too common heart attack - cardiac arrest - CPR scenario. If you want to think about cardiac arrest arising from trauma, a trauma to the chest looks more likely to result in cardiac arrest than an equivalent trauma to the head.
I have no helmets left that I want to bash in at the moment.
