An Unusual Cause of Left Ventricular Outflow Tract Obstruction After Mitral Valve Repair

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Left ventricular outflow tract (LVOT) obstruction caused by systolic anterior motion is a cause of failed mitral valve repair. Intraoperative transesophageal echocardiography has been very helpful in diagnosing problems with mitral valve repairs intraoperatively, allowing immediate correction. We report an unusual cause of LVOT obstruction attributed to prolapse of the annuloplasty ring into the LVOT. Intraoperative hemodynamics were normal, and the diagnosis would not have been made before leaving the operative suite without the transesophageal echocardiography.

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