| Aortic jet velocity (m/s) | |
|---|---|
| Aortic sclerosis: | ≤2.5 m/s |
| Mild: | 2.6-2.9 |
| Moderate: | 3.0-4.0 |
| Severe: | >4.0 |
| Mean gradient (mmHg) | |
| Aortic sclerosis: | − |
| Mild: | <20 (<30**) |
| Moderate: | 20-40* (30-50**) |
| Severe: | >40* (>50**) |
| AVA (cm2) | |
| Aortic sclerosis: | − |
| Mild: | >1.5 |
| Moderate: | 1.0-1.5 |
| Severe: | <1.0 |
| Indexed AVA (cm2/m2) | |
| Aortic sclerosis: | |
| Mild: | >0.85 |
| Moderate: | 0.60-0.85 |
| Severe: | <0.6 |
| Velocity ratio | |
| Aortic sclerosis: | |
| Mild: | >0.50 |
| Moderate: | 0.25-0.50 |
| Severe: | <0.25 |
*AHA/ACC Guidelines, **ESC Guidelines