Some 55+ years ago I took a direct hit in the chest from a baseball from about 10 feet off the bat by an older teenager. I was down for the count. The group got me on my feet and bicycled me back home. Still here. The questions on this “accident” likely will be focused on equipment failure and undetected health issues. Just suggesting..
I don't recall if some sort of abnormal condition must exist, but I know the timing of the blow within the heartbeat cycle is extremely specific.