Mitral Valve Repair Surgery (Commissurotomy) for Mitral Valve Stenosis

A commissurotomy surgery has the risks of any open-heart surgery with a heart-lung bypass. About 1 to 3 out of 100 people have a serious complication after surgery.^{Reference 1} The exact risks of surgery vary depending on the person's specific condition and general health prior to surgery.

Risks during surgery and soon after surgery. These risks include dangerous blood clots, bleeding, infection, and risks associated with anesthesia. About 1 out of 100 people die from this surgery.^{Reference 2}

Risks after surgery. Complications that happen after surgery include:

• Reference Mitral valve regurgitation Opens New Window. The valve might be damaged so that it doesn't close normally and allows blood to leak backward in the heart.
• Restenosis. The valve can become narrow again after 10 to 20 years. You may need another repair surgery or a valve replacement surgery.

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