Which of the following is an example of mitral valve repair used in the context of mitral stenosis?

• A. Balloon valvotomy
• B. Mitral commissurotomy
• C. Coronary bypass
• D. Transcatheter aortic valve replacement

Answer: (B)

Mitral stenosis often results from fusion of the leaflets at the commissures. A repair aims to restore normal valve anatomy while preserving the native mitral apparatus. Surgically separating the fused commissures—mitral commissurotomy—directly widens the opening and is considered a repair of the valve. Balloon valvotomy, while it relieves stenosis by dilating the orifice with a balloon, is a percutaneous dilation rather than a surgical repair of the valve tissue. The other options target different structures: one bypasses blocked coronary arteries, and the other replaces the aortic valve. So, the repair example in this context is mitral commissurotomy.