Mitral stenosis - severity
Mild | Moderate | Severe | |
---|---|---|---|
Specific findings | |||
Valve area (cm2) | less than 1.o | 1.0-1.5 | more than 1.5 |
Supportive findings | |||
Mean gradient (mmHg)a | less than 5 | 5-10 | more than 10 |
Pulmonary artery pressure (mmHg) | less than 30 | 30-50 | more than 50 |
|
測量MS Seveity的三大指標:
(1) Pressure gradient
- diastolic pressure gradient
- "mean" mitral gradient
- transmitral velocity flow curve (CW is preferred)
(2) MVA Planimetry
- direct tracing of the mitral orifice, including opened commissures
- parasternal short-axis view
(3) Pressure half-time
- T1/2 單位: milliseconds (ms)
- MVA = 220 / T1/2
Wilkins score:
Cormier score: