<Tr> <Th> eMedicine </Th> <Td> ped / 3019 </Td> </Tr> <Tr> <Td_colspan="2"> (edit on Wikidata) </Td> </Tr> <P> Commotio cordis (Latin, "agitation of the heart") is an often lethal disruption of heart rhythm that occurs as a result of a blow to the area directly over the heart (the precordial region), at a critical time during the cycle of a heart beat causing cardiac arrest . It is a form of ventricular fibrillation (V - Fib), not mechanical damage to the heart muscle or surrounding organs, and not the result of heart disease . The fatality rate is about 65% even with prompt CPR and defibrillation, and more than 80% without . </P> <P> Commotio cordis occurs mostly in boys and young men (average age 15), usually during sports, most frequently baseball, often despite a chest protector . It is usually caused by a projectile, but can also be caused by the blow of an elbow or other body part . Being less developed, the thorax of an adolescent is likely more prone to this injury given the circumstances . </P>

What happens if you get hit in the heart
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