• A P Burke, A Farb, R Virmani, J Goodin, and J E Smialek.
• Department of Cardiovascular Pathology, Armed Forces Institute of Pathology, Washington, D.C. 20306-6000.
• Am. Heart J. 1991 Feb 1; 121 (2 Pt 1): 568-75.

AbstractSports-related sudden cardiac deaths were compared with non-sports-related sudden cardiac death in individuals (14 to 40 years old) who were autopsied from 1981 to 1988 at the Maryland Medical Examiner's Office. Thirty-four of 690 total cases of sudden cardiac death were sports-related, which represents 5% of sudden cardiac death in this age group. Causes of death were severe atherosclerosis (nine), hypertrophic cardiomyopathy with asymmetry (eight), coronary artery anomalies (four), idiopathic concentric left ventricular hypertrophy (three), myocarditis (two), arrhythmogenic right ventricle (one), Kawasaki disease (one), and unknown (six); two of the cases with unknown causes had tunnel arteries. Exercise-related deaths were more likely due to hypertrophic cardiomyopathy (p = 0.0007) compared with 102 age-, sex-, and race-matched controls in the non-exercise group; there was no difference in the incidence of severe atherosclerosis (p = 0.4). The mean age of individuals with hypertrophic cardiomyopathy with asymmetry was less than that of those with severe atherosclerosis (24 vs 32 years, p = 0.03). Thus exercise precipitates sudden cardiac death in younger individuals with hypertrophic cardiomyopathy.

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