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  • Title: Hypertrophic cardiomyopathy: the edge-to-edge secures the correction of the systolic anterior motion.
    Author: Obadia JF, Basillais N, Armoiry X, Grinberg D, Dondas A, Barthelet M, Derimay F, Rioufol G, Finet G, Pozzi M.
    Journal: Eur J Cardiothorac Surg; 2017 Apr 01; 51(4):638-643. PubMed ID: 28007871.
    Abstract:
    OBJECTIVES: Although septal myectomy is the technique of choice for hypertrophic cardiomyopathy, the surgical management of concomitant mitral valve lesions is controversial. Various complex surgeries have been proposed to address mitral valve lesions. We propose a simple option using an edge-to-edge mitral valve repair through the aortic valve in addition to the septal myectomy. METHODS: We performed an observational analysis of our prospectively collected database. The clinical follow-up was done by telephone contact with each patient. The echocardiographic follow-up was performed in our Department of Cardiology or by the referring cardiologist. RESULTS: Between January 2009 and March 2016, we operated 22 symptomatic patients (mean age 48.5 years, males 59%). The mean interventricular septum diameter and resting intraventricular gradient were 25.8 mm and 75.4 mmHg, respectively. The systolic anterior motion was present in every patient. The mean mitral regurgitation grade was 2.4. There were no in-hospital deaths. Two (9%) patients required a pacemaker. After a mean follow-up of 26.3 months, the mean New York Heart Association functional class decreased from 2.5 to 1.2 ( P  < 0.001). The echocardiographic follow-up showed a sustained significant reduction of the septal thickness ( P  < 0.001), resting intraventricular gradient ( P  < 0.001), presence of systolic anterior motion ( P  < 0.001) and grade of mitral regurgitation ( P  = 0.002). CONCLUSIONS: Septal myectomy remains the gold standard of any surgery for hypertrophic cardiomyopathy owing to its good clinical and echocardiographic results. The edge-to-edge mitral valve repair is an additional simple option to avoid the systolic anterior motion and effectively reduce the grade of mitral regurgitation.
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