What are the 3 causes of sudden death in young people?

Long QT syndrome is an often unrecognized congenital condition that predisposes the child to an abnormality in the heart's electrical system, which can lead to death. This is a genetic disease that affects 1 in 7,000 young people. Episodes are most commonly triggered by physical exertion or emotional stress. Commotio cordis is an electrical disturbance cases by a blow to the chest. It occurs most often in baseball, but has been reported in other sports and situations in which there is a blow to the chest. Researchers at the U.S. Commotio Cordis Registry studied 124 cases and found the average age is 14. Only 18 victims (14%) survived; most who survived received prompt CPR and defibrillation. Hypertropic cardiomyopathy is a congenital heart muscle disease. The walls of the heart's left ventrical become abnormally thickened (hypertrophy). The structural abnormality can lead to obstruction of blood flow from the heart, causing loss of consciousness and irregular heartbeat leading to death.

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