
1. Mitral stenosis
Normal
Mild
Moderate
Severe
Pressure
half time (ms)
40–70
71–139
140–219
>
219
Mean pressure drop (mmHg)
<
5.0
5–10
>
10
Valve area (cm 2 )
4.0–6.0
1.6–2.0
1.0–1.5
<
1.0
2. Mitral regurgitation
...