Abstract
A 70-year-old patient underwent modified maze procedure and mitral repair including quadrangular resection, annular plication (Reed procedure), and flexible ring annuloplasty with Cosgrove ring. Systolic anterior motion (SAM) of the anterior mitral leaflet and mild mitral regurgitation was observed on weaning from cardiopulmonary bypass. The patient was medically treated, and postoperative echocardiography revealed disappearance of the SAM 11 days after surgery. In addition to the surgical condition of rather excessive annular plication and small ring, transient conditions including inotropic support, insufficient volume under diastolic dysfunction of left ventricle, and loss of atrial contraction were thought to be the causes of SAM.
