Eclipsed functional mitral regurgitation destabilizing hypertrophic cardiomyopathy: an unusual case treated with MitraClip

Abstract MitraClip is validated in high-risk patients with severe degenerative mitral regurgitation (MR), however, it is not well established for functional MR in hypertrophic cardiomyopathy (HCM). We share a case of a 68-y.o. man with HCM hospitalized for multiple acute pulmonary edema due to a dynamic MR successfully treated with MitraClip. Novel teaching points emerging from this case are: MRs in HCM can often be explained by mixed mechanisms and properly identifying the MR mechanism is essential in order to choose the optimal treatment of the patient. Furthermore, MitraClip can simultaneously treat MR secondarily to annular dilation and SAM.