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Grading MS severity.
| Mild | Moderate | Severe | |
| Specific finding | |||
| Mitral valve area | >1.5 cm2 | 1.0–1.5 cm2 | <1 cm2 |
| Supportive finding | |||
| Mean gradient (mmHg) | < 5 | 5–10 | >10 |
| SPAP (mmHg) | <30 | 30–50 | >50 |
Data from the EAE/ASE table for grading the severity of MS by echocardiography (53).
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