Program Progress:
| Indicator | Mild | Moderate | Severe | 
|---|---|---|---|
| Qualitative (echo) | |||
| Doppler vena contracta width (cm) | < 0.3 | 0.3 - 0.69 | > 0.70 | 
| Quantitative (echo) | Regurgitant volume (ml per beat) | < 30 | 30 - 59 | > 60 | 
| Regurgitant orifice area (cm2) | < 0.20 | 0.20 - 0.39 | > 0.40 |