Conclusion
Infective endocarditis is an uncommon but serious complication in HCM
that can occur in patients with or without LVOTO. Septic embolization
and valve lesions are common in these patients. IE patients with HCM
might have a poor prognosis compared to those without HCM and should
receive cardiac surgery as early as possible.
Mortality is high but similar to that found in patients with or without
indication for endocarditis prophylaxis. However, predisposing factors
and Streptococci infections are more frequent among native-valve HCM
patients.