Abstract
BackgroundThe efficacy, safety and feasibility of the modified Konno procedure for the surgical correction of hypertrophic obstructive cardiomyopathy (HOCM) are demonstrated. MethodsFour patients underwent a modified Konno procedure. The ages ranged from 8 to 59 years. There were three females and one male. Symptoms referred to were angina, dyspnea and presyncope. The echocardiography study revealed a maximum gradient between 65–120mm Hg. Systolic anterior motion of mitral valve and mitral regurgitation was present in all cases. ResultsThere were no in-hospital deaths. The gradients decreased by 91%. Mild postoperative mitral regurgitation was present in three patients. One permanent pacemaker was implanted. Mean follow up was 54 months. ConclusionsThis procedure is an alternative to the Morrows septal myectomy for the correction of HOCM, allowing a greater enlargement of the left ventricular outflow tract. It can be performed with good early and mid-term results proving to be safe and feasible.
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