HCM
Also written as: HCM — hypertrophic cardiomyopathy
Hypertrophic cardiomyopathy; inherited condition causing abnormal heart muscle thickening, leading cause of SCD in young athletes.
Full Definition
Hypertrophic cardiomyopathy is a genetic cardiac condition characterized by inappropriate thickening of the heart muscle, particularly the left ventricle, in the absence of another cause. It is the most common cause of sudden cardiac death in young athletes and competitive sports participants. The condition can cause outflow tract obstruction, arrhythmias, and impaired diastolic filling. Diagnosis requires careful differentiation from athlete's heart through advanced imaging and genetic testing.
Usage
Usage note: Capitalize as acronym; avoid using HOCM unless obstruction is specifically documented.
In Context
- "Genetic testing confirmed HCM in the athlete's family member, prompting cascade screening." — Genetic counseling report
- "The differential diagnosis included HCM versus physiological left ventricular hypertrophy." — Echocardiography report