Grading of Mitral Regurgitation
Parameter | Moderate MR | Severe MR |
|---|---|---|
Vena contracta* | 3–7 mm | > 7 mm |
Effective regurgitant orifice area | 0.20–0.40 cm2 | > 0.40 cm2 |
Regurgitant volume | 30–60 mL | > 60 mL |
Regurgitant fraction | 30–50% | > 50% |
* The narrowest diameter of the fluid stream downstream of an abnormal valve orifice; it is slightly smaller than the anatomic valve orifice. | ||
MR = mitral regurgitation. | ||
In these topics