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Ann Thorac Surg 1987;43:561-563
© 1987 The Society of Thoracic Surgeons

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Articles

Dynamic Left Ventricular Outflow Tract Obstruction When the Anterior Leaflet Is Retained at Prosthetic Mitral Valve Replacement

From the Charles A. Dana Research Institute and the Harvard-Thorndike Laboratory of Beth Israel Hospital, Departments of Medicine (Cardiovascular Division) and Surgery, Beth Israel Hospital and Harvard Medical School, Boston, MA

Accepted for publication July 26, 1986.

^* Address reprint requests to Dr. Come, Cardiovascular Division, Beth Israel Hospital, 330 Brookline Ave, Boston, MA 02215

Dynamic left ventricular outflow tract obstruction developed in a patient in whom the anterior leaflet was retained at mitral valve replacement. It was caused by systolic anterior movement of the native anterior leaflet. Reduced outflow tract diameter, resulting from both posterior displacement of the septum and anterior displacement of the native anterior leaflet by porcine stents, was likely instrumental in promoting dynamic obstruction.

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