Mild (1+) | Moderate (2+) | Severe (3 to 4+) | |
Vena contracta width | <0.3 cm | 0.3 to 0.6 cm | >0.6 cm |
Jet width/LVOT ratio (for central jets) | <25% | 25 to 64% | ≥65% |
Pressure half time | >500 ms | 200 to 500 ms | <200 ms |
Diastolic flow reversal in descending aorta | Brief early diastolic flow reversal | Intermediate | Prominent holodiastolic flow reversal |
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