The new butterfly technique-a sophisticated repair method for posterior leaflet prolapse.

Mitral valve repair is currently considered the standard treatment for mitral regurgitation. Posterior leaflet prolapse has been treated by quadrangular resection and ring annuloplasty for many years. Although it is a classic and reproducible method, this technique may predispose to systolic anterior motion (SAM) of the anterior leaflet of the mitral valve. The incidence of SAM has been reported in up to 15% of posterior leaflet prolapse operations involving quadrangular and triangular resection along with artificial chordal implantation. We introduced the butterfly resection technique in 2006 and it was first described in publication in 2011 (1).