So until we understand the physiology of the sudden death, all that we can do is recommend avoidance of activities that increase the risk of sudden death for the patient. Some of the other CHD conditions you mention do not have associated with them an increased risk of sudden cardiac death with physical exertion. As for the family history, that probably makes sudden cardiac death even more likely for your son, however this has not been proven and NO the family history itself is not the only reason for your son's physical restrictions. Any patient with HOCM, regardless of severity is at some increased risk of sudden cardiac death. I hope you find this information useful.
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