Often deadly disturbance of the heart’s normal rhythm that occurs as a result of a “blow to the chest” directly over the heart. Timely cardiopulmonary resuscitation and defibrillation is very important.

Resources:

https://www.ahajournals.org/doi/10.1161/CIRCEP.111.962712

https://newsroom.heart.org/news/understanding-cardiac-arrest-and-emergency-response-following-damar-hamlins-collapse-during-monday-night-football

https://www.ahajournals.org/doi/10.1161/CIR.0000000000000249

https://pubmed.ncbi.nlm.nih.gov/17229310/