What is the risk of sudden cardiac death in hypertrophic cardiomyopathy (HCM)?

Cardiomyopathy 00:18 min watch Published 5 March 2026 Dr Ravi Assomull, Consultant Cardiologist

While hypertrophic cardiomyopathy is associated with an increased risk of sudden cardiac death, the overall risk is lower than previously believed. Dr Ravi Assomull explains current estimates and how risk assessment helps determine which patients may benefit from preventative treatment.

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Transcript

The risk of sudden death in HCM is a lot less than we used to think. The latest analysis of all the trials suggests that there is a 0.3% to 0.5% risk of someone dying with HCM every year.

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