Triangular Exclusion Technique in Isolated Posterior Mitral Valve Leaflet Prolapse for Mitral Valve Repair

The prolapsed part of the posterior leaflet is inverted and excluded, not resected toward the left ventricle, and the margins of the prolapsed part are sutured to each other's using proline 5/0, extending from the posterior leaflet edge to the posterior annulus. Then the posterior annulus is reinforced with an annuloplasty band using a treated strip of pericardium. The determination of suitable ring size is subsequently predicated upon the assessment of inter-commissural distance surface area and the anterior leaflet, utilizing sizers that are correlated with typical mitral geometry.