Mitral valve remodeling using autologous pericardium: an experimental study

Area of Science:

• Cardiovascular Surgery
• Biomaterials Science

Background:

• Mitral valve disease often requires complex surgical reconstruction.
• Existing techniques may not fully address subvalvular apparatus integrity.
• Autologous tissues offer biocompatibility for cardiac repair.

Purpose of the Study:

• To evaluate the in vivo efficacy of a novel mitral valve remodeling technique.
• To assess the feasibility of using autologous pericardium for leaflet reconstruction.
• To determine the functional outcome of the remodeled mitral valve.

Main Methods:

• Surgical remodeling of mitral valve leaflets in 6 dogs under cardiopulmonary bypass.
• Subtotal resection of leaflets, preservation of chordae tendineae, and simulated pathological alterations.
• Reconstruction using glutaraldehyde-treated autologous pericardium and intraoperative suturing.
• Epicardial echocardiographic assessment of valve function under rest and stress conditions.

Main Results:

• Successful intraoperative remodeling of mitral valve leaflets using autologous pericardium.
• The technique is reproducible, even with morphologically altered subvalvular apparatus.
• The remodeled mitral valve demonstrated satisfactory function at rest and during stress.

Conclusions:

• Intraoperative mitral valve remodeling with autologous pericardium is feasible and reproducible.
• Preservation of the subvalvular apparatus is achievable with this technique.
• This method represents a promising surgical alternative for extensive mitral valve reconstruction in various patient populations.