Commotio cordis: What is the rare phenomenon?

“Commotio cordis is a very rare cause of sudden cardiac death, primarily in athletes, or anybody who receives blunt force trauma to your chest, right over your heart,” said Bill Cornwell, the director of the Sports Cardiology Clinic at UCHealth. “Somebody drops suddenly because they have a bad rhythm that is not compatible with life. And unless somebody intervenes very quickly, they will likely pass away.”