Mitral valve replacement and septal myectomy for hypertrophic obstructive cardiomyopathy

A 76-year-old woman with a diagnosis of hypertrophic obstructive cardiomyopathy was referred to our hospital’s surgical department. Her echocardiogram revealed diffuse left ventricular hypertrophy, moderate mitral valve regurgitation with systolic anterior motion of the mitral valve, and left ventricular obstruction with a peak outflow gradient of 108 mm Hg. We performed a transaortic rectangular septal myectomy with an incision at a width,...