Key result
Postmortem pathology and molecular testing in HCM decedents guide genetic counseling to prevent familial SCD.
Why the study?
Hypertrophic cardiomyopathy is a leading cause of sudden cardiac death in young adults and adolescents, often presenting first as sudden death during exertion and requiring postmortem and molecular evaluation to guide risk reduction in living relatives.
Highlights the critical role of postmortem pathology and molecular genetic testing in hypertrophic cardiomyopathy decedents to inform genetic counseling and prevent sudden cardiac death in surviving relatives.
Answers are grounded in this paper and cite their sources.
Histologic features in HCM sudden death cases are hypothesis-generating; larger studies needed before diagnostic adoption.
Hypertrophic cardiomyopathy is one of the most common causes of sudden cardiac death among young adults and adolescents. Unfortunately, the first manifestation of the condition may be sudden death during exertion, such as sporting activities. Other clinical symptoms include exertional dyspnea, angina, and syncope. Postmortem examination often reveals asymmetrical septal thickening and mural plaque formation in the left ventricular outflow tract. Histologic analysis shows cardiac myocyte hypertrophy, myofiber disarray, and interstitial and replacement fibrosis. Molecular analysis for known genetic abnormalities is essential to genetic counseling of living relatives of decedents to assess and reduce the risk of sudden cardiac death from hypertrophic cardiomyopathy.
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Kocovski et al. (2015) conducted a review in Hypertrophic cardiomyopathy. Postmortem pathology and molecular analysis of hypertrophic cardiomyopathy decedents enable genetic counseling of living relatives to reduce sudden cardiac death risk.
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