Leakage test during mitral valve repair.

Area of Science:

• Cardiovascular Surgery
• Surgical Innovation

Background:

• Mitral valve repair is the preferred treatment for mitral regurgitation, demanding high-quality surgical execution for optimal long-term results.
• Accurate intraoperative assessment of the repaired mitral valve is critical before atrial closure to ensure surgical success.

Purpose of the Study:

• To evaluate the effectiveness of intraoperative leakage tests for mitral valve repair.
• To compare the physiological assessment of repaired mitral valves on a beating heart versus an arrested heart.

Main Methods:

• Review of current intraoperative assessment techniques, including the saline test and ink test.
• Discussion of beating heart techniques utilizing antegrade or retrograde coronary artery perfusion for valve assessment.
• Highlighting precautions for beating heart techniques, such as CO2 insufflation and coronary sinus flow management.

Main Results:

• Traditional saline and ink tests on an arrested heart may not accurately reflect the repaired valve's function in a beating heart.
• Beating heart assessment using perfusion techniques offers a more physiological evaluation of mitral valve competence.
• Differences between arrested heart leakage tests and postoperative echocardiography highlight the limitations of static assessments.

Conclusions:

• Intraoperative leakage testing plays an increasingly vital role in successful mitral valve reconstruction.
• Beating heart assessment provides a more reliable method for evaluating mitral valve repair competency compared to arrested heart methods.
• Advancements in perfusion techniques facilitate physiological assessment during mitral valve repair surgery.