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AS values
degrees of aortic stenosis
Parameter | Value Range |
---|---|
normal AS by the AVA (continuity equation): | 2.5-4.5 cm2 |
mild AS by the AVA (continuity equation): | 1.1-1.9 cm2 |
moderate AS by the AVA (continuity equation): | 0.75-1.0 cm2 |
severe AS by the AVA (continuity equation): | <0.75 cm2 |
mild AS by the mean PG (Bernoulli’s) method: | <20 mmHg |
moderate AS by the mean PG (Bernoulli’s) method: | 20-49 mmHg |
severe AS by the mean PG (Bernoulli’s) method: | ≥50 mmHg |
mild AS by the max PG method: | 16-36 mmHg |
moderate AS by the max PG method: | 36-50 mmHg |
severe AS by the max PG method: | ≥64 mmHg |
mild AS by peak velocity method: | <3.0 m/s |
moderate AS by peak velocity method: | 3.0-4.0 m/s |
severe AS by peak velocity method: | >4.0 m/s |