Published online March 30, 2009
PEDIATRICS Vol. 123 No. 4 April 2009, pp. 1217-1222 (doi:10.1542/peds.2008-0708)
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REVIEW ARTICLE

Sudden Unexpected Death in Young Athletes: Reconsidering "Hypertrophic Cardiomyopathy"

Thomas Rowland, MD

Department of Pediatrics, Baystate Medical Center, Springfield, Massachusetts

Hypertrophic cardiomyopathy is considered a principal cause of sudden unexpected cardiac death in young athletes. However, a number of demographic features observed in these deaths are not consistent with the diagnosis. All of these characteristics instead share in common a propensity for ventricular hypertrophy, implying that these deaths may reflect electrical stability in the extremely rare athlete with exaggerated myocardial hypertrophy in response to sports training. This review provides an evidence-based line of reasoning that supports this concept.

Key Words: sudden death • cardiomyopathy • exercise training • arrhythmias

Abbreviations: HCM—hypertrophic cardiomyopathy • BSA—body surface area

Accepted Sep 4, 2008.


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