In hypertrophic cardiomyopathy, surgical reduction of the left ventricular outflow tract gradient is primarily indicated to reduce the risk of sudden cardiac death.

Surgical reduction of the outflow tract gradient is described as a way to **reduce symptoms**, but the material says it has not been shown to reduce sudden-death risk. The distinction between symptom relief and prevention of arrhythmic death is important when interpreting treatment effects. **Key takeaway:** The stated surgical benefit is symptomatic, not proven sudden-death prevention.\n\n**Glossary:** **Gradient**: A difference in pressure across a region, here the ventricular outflow tract.