Table 2.

Commissural score.

Commissure score	Commissure morphology
0	Neither commissure fused or calcification of both commissures or absent fusion of one commissure and calcification of other
1	Partial fusion of one commissure and absent fusion or calcification of the other
2	Extensive fusion of one commissure and absent fusion or calcification of the other or partial fusion of both commissures
3	Extensive fusion of one commissure, partial fusion of the other, and no commissural calcification
4	Extensive fusion of both commissures and no commissural calcification

From – N Sutaria, TRD Shaw, D Northridge et al. Commissural morphology predicts outcome after balloon mitral valvotomy. Heart 2006; 92: 52–57.