1. Echocardiografic criteria for aortic valve stenosis (Vahanian 2012; Nishimura 2014).
Mild Aortic stenosis |
Moderate Aortic stenosis |
Severe Aortic stenosis |
|
Valve area | 1.5 cm² | 1.0 to 1.5 cm² | < 1.0 cm² |
Mean pressure gradient |
< 20 mmHg | 20 to 39 mmHg | > 40 mmHg |
Aortic jet velocity | < 2.0 to 2.9 m per second |
3.0 to 3.9 m per second |
> 4.0 m per second |