That chest wound may be from attempting to do open cardiac massage in the ER in an attempt to keep him alive.
Shotgun slug wound
Schoenfeld said he couldn’t discuss specific treatments in the case except to say what is usually done in such circumstances, including putting a needle in the chest to relieve pressure that can damage blood vessels, and cutting open the chest and using rib-spreaders to let doctors drain blood in the sac around the heart that can put pressure on the heart and keep it from beating.