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Myectomy and Left Atrial-to-Left Ventricular Conduit for Severe Calcific Mitral Stenosis and Hypertrophic
Zahara Meghji1, Anita Nguyen1, Jeffrey B Geske2
1Department of Cardiovascular Surgery, Mayo Clinic, Rochester, Minnesota.
Insights
Severe calcific mitral valve stenosis and obstructive hypertrophic cardiomyopathy can be treated with a novel surgical approach. This technique bypasses the stenotic mitral valve, reducing risks associated with traditional mitral valve replacement in complex cases.
Area of Science:
- Cardiovascular Surgery
- Interventional Cardiology
- Cardiac Pathology
Background:
- Coexistence of severe calcific mitral valve stenosis and obstructive hypertrophic cardiomyopathy presents significant surgical challenges.
- Traditional surgical mitral valve replacement in these patients carries high risks, including paravalvular leakage and bleeding.
Abstract:
Severe calcific mitral valve stenosis can rarely occur concomitantly with obstructive hypertrophic cardiomyopathy. In these patients, surgical decalcification of the stenotic mitral valve followed by mitral valve replacement carries substantial operative risk and may result in paravalvular leakage, atrioventricular groove disruption, and excessive bleeding. We report two cases of obstructive hypertrophic cardiomyopathy with severe calcific mitral valve stenosis successfully treated with concomitant transaortic septal myectomy and bypass of the stenotic mitral valve with the use of a valved left atrial-to-left ventricular conduit.
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