Is it safe for my son who has hypertrophic cardiomyopathy to use a trampoline?

Not a good idea: He should be restricted from intense competitive sports to reduce the risk for sudden cardiac death. The trampoline is a fairly strenuous workout. His cardiologist will make specific recommendations based upon his particular clinical findings.

Perhaps not: This is an important conversation for you to have with your son's pediatric cardiologist. Children and adolescents with hypertrophic cardiomyopathy have a significant, important risk of sudden death with exercise. Activity levels and limits should be carefully explored with your son's pediatric cardiologists.