Author Affiliations: Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota.
Hypertrophic cardiomyopathy (HCM) is a relatively common disorder (occurring in approximately 1 in 500 adults in the general population)1,2 and has the widely recognized clinical findings of massive myocardial hypertrophy and dynamic left ventricular outflow tract obstruction. Once thought to be a disease of unknown etiology, HCM is now recognized as a genetic disorder often caused by a mutation in at least 1 of 12 genes that encode the proteins of the cardiac sarcomere.3
Nishimura RA, Ommen SR. Hypertrophic Cardiomyopathy, Sudden Death, and Implantable Cardiac Defibrillators: How Low the Bar? JAMA. 2007;298(4):452–454. doi:https://doi.org/10.1001/jama.298.4.452
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