2020 Volume 24 Issue 1 Pages 105-110
Left ventricular outflow tract obstruction due to retained anterior mitral valve leaflet was detected on transesophageal echocardiography after mitral valve replacement with preservation of both the anterior and posterior mitral valve leaflets. No improvement was attained after medical treatment, thus reoperation was performed on the following day. The A2 portion of the anterior mitral valve leaflet was resected under cardiac arrest, and the left ventricular outflow tract obstruction was resolved. Retaining the native valve leaflet or subvalvular apparatus during mitral valve replacement leads to long-term left ventricular function maintenance but may cause complications, as in this case.
Based on the poor prognosis of the present case at follow-up, early diagnosis with echocardiography and reoperation are crucial.
