Mitral valve repair: moving towards a personalized ring

Area of Science:

• Cardiovascular Surgery
• Biomedical Engineering
• Cardiac Surgery

Background:

• Mitral valve repair using annuloplasty rings is standard for significant mitral regurgitation (MR) due to floppy mitral valve (FMV)/mitral valve prolapse (MVP).
• Standard commercial rings may not fit individual mitral annulus variations in size, shape, and motion.
• Patient-specific annuli necessitate tailored surgical solutions.

Purpose of the Study:

• To evaluate the efficacy and outcomes of a "personalized ring" (PR) for mitral valve repair in patients with severe MR.
• To compare the performance of PRs against commercially available annuloplasty rings.

Main Methods:

• A retrospective analysis of 127 patients with severe MR due to FMV/MVP undergoing mitral valve repair.
• 58 patients received a custom-made "personalized ring" (PR) constructed from Dacron and titanium clips.
• 69 patients received a standard Carpentier-Edwards Physio II ring.

Main Results:

• No surgical deaths occurred in either group.
• The PR group showed a significantly greater mitral valve area (3.78 cm²) compared to the Physio II group (3.13 cm²).
• The PR group demonstrated preserved mitral annular dynamic motion (14.35% change) unlike the Physio II group, and prevented systolic anterior motion (SAM).

Conclusions:

• The personalized ring (PR) is a suitable and effective option for all patients needing mitral valve repair for significant MR due to FMV/MVP.
• The precise fit of the PR preserves mitral valve area and annular function, preventing SAM and yielding excellent short- and long-term results.
• Custom-fit annuloplasty rings enhance surgical outcomes in mitral valve repair.