Ecocardiographic Evaluation of Mitral Insufficiency in Patients with Hypertrophic Cardiomyopathy

Background: Hypertrophic Cardiomyopathy (HCM) is a genetic disease that affects thousands of people around the world. Objectives: The present study aims to evaluate the presence of mitral regurgitation in patients with HCM, as well as its relationship with left ventricular Doppler echocardiographic variables. The mitral valve failure found in these patients is an extremely important finding, since it is able to predict the survival and mortality rate of the patients affected by HCM. Materials and Methods: All echocardiograms performed from 2006 to 2016 in the echocardiographic service of Hospital de Base de São José do Rio Preto were evaluated. A total of 112,930 tests were gathered, of which those with HCM diagnosis or wall thickness >15 mm were selected and 132 patients were included in the analysis. Results: Moderate and major mitral valve regurgitation is present in 25% and 5.3% of the patients, respectively, and MRI is independently correlated with the obstructive form of HCM. Conclusion: Mitral regurgitation is a frequent finding in patients with CMP, however, significant MI is extremely uncommon and is correlated with the obstructive form of the disease.