This may be relevant - or not. But I found it interesting.
Sudden cardiac death risk in contact sports increased by myocarditis: a case series
Grégoire Massoullié, Baptiste Boyer, Vincent Sapin, Frédéric Jean, Marius Andronache, Michel Peoc’h, Guillaume Clerfond, Romain Eschalier
European Heart Journal - Case Reports, Volume 5, Issue 3, March 2021, ytab054, https://doi.org/10.1093/ehjcr/ytab054
Published: 01 March 2021
Background
Myocarditis is a known cause of sudden cardiac death of the athlete. The impact of direct chest trauma in at-risk sports or activities in patients with a history of myocarditis has never been demonstrated or studied. We report herein two cases of life-threatening ventricular arrhythmia secondary to non-penetrating blunt chest trauma while playing contact sports. ...
sourceThe research shows that
commotio cordis - an interruption in the heart’s electrical rhythm caused by sudden impact to the chest wall - almost always affects boys, not adults. It also almost always involves a hard item like a baseball or a puck hitting the chest. Damar is a well-built, muscular 24 year old. If, as many speculate, this was
commotio cordis, it seems to have been a freak and very unusual incidence caused not by a puck or baseball but by a wide receiver's shoulder running into the defender's chest.
The European researchers concluded that the aftereffects of myocarditis raise “the risk of lethal ventricular arrhythmias following blunt chest trauma.” In other words, the
atypical victim - an
adult hit with
something other than a hard object right in the chest may be more at risk of being a victim if he has a preexisting case of myocarditis.
I am not saying Damar had myocarditis, nor am I saying the vaccine
caused him to have a cause of myocarditis. For all we know, he had an undiagnosed congenital heart issue. Bottom line is that we don't know. I hope we find out some day. I also earnestly hope this young man recovers.