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Grading of aortic stenosis.
| Grading of severity | Echocardiographic indices | ||
|---|---|---|---|
| AV Vmax (m/s) | Mean gradient (mmHg) | AVA (cm2) | |
| Aortic sclerosis | <2.5 | – | – |
| Mild | 2.5–2.9 | <20 | >1.5 |
| Moderate | 3–3.9 | 20–39 | 1–1.5 |
| Severe | 4–4.9 | 40–59 | <1 |
| Very severe | ≥5 | ≥60 | ≤0.6 |
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