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Subgroup definition.
| Group 1, fair result | Group 2, good result | Group 3, suboptimal result |
|---|---|---|
| Immediate postprocedural MVA of <1.5 cm2 and at least 50% gain in MVA. | Immediate postprocedural MVA of at least 1.5 cm2. | Immediate postprocedural MVA of <1.5 cm2 and less than 50% gain in MVA. |
MVA, mitral valve area.
