I've only known one guy crazy enough to do this, as a surgical resident riding the ambulance. I wouldn't recommend public mutilation of dead people as a general approach, though. An electrical disturbance must be exceedingly rare. I doubt that even at BTGH you have seen any. Likewise, massive bleeding from a large hole is impossible.
Large holes die before the paramedic gets there.
They exanguinate immediately. So, in the field, if this guy arrests all of a sudden, the only thing to try short of field thoracotomy, is to needle his pericard . Hi Avi, Electrical disturbance is a recognized complication of both blunt and penetrating cardiac injuries. How often it progresses to arrest and whether that situation is ever recoverable is probably pure speculation. Of course this may just have been a long sinus pause, but it makes a good story.