Transapical Septal Myectomy for Hypertrophic Cardiomyopathy With Midventricular Obstruction

Background Midventricular obstruction (MVO) is an uncommon variant of hypertrophic cardiomyopathy (HCM). In patients receiving septal myectomy for HCM, failure to recognize the concurrent MVO in the context of basal septum thickening can lead to inadequate excision and residual gradient. In this report, we detail the operative outcomes of MVO with and without coexistent basal septal hypertrophy. Methods From February 1997 through September 2018,...