Wrist and Hand Conditions

Unfortunately, often the first clinical
manifestation of HCM is sudden death. In a
series of SCD occurring during exercise
inpatients with HCM, only 35.7% had a
previous cardiac evaluation for risk factors
that included syncope, family history,
murmurs, fatigue, or ventricular tachycardia
on exercise testing. In another study, 21%
of athletes who died from HCM had
symptoms of cardiovascular disease before
their death.
In those who had prodromal symptoms, the
most prominent were exertional dyspnea
(the most common symptom), chest pain,
palpitation as well as presyncope and
syncope.