MR Severity (Summary)
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]; Varun Kumar, M.B.B.S.; Lakshmi Gopalakrishnan, M.B.B.S.
| Severity | mild | severe |
|---|---|---|
| Jet area | <4 cm2 | >8 cm2 |
| Jet width | thin | >0.6 |
| vena contracta | <0.3 | >0.7 |
| PISA radius | <0.4 | >1 |
| Pulmonary venous flow | systolic dominant | systolic flow reversal |
| Mitral inflow | can be A wave dominant | E wave dominant >1.2m/s |
| Continuous wave doppler | soft and parabolic | dense and triangular |
| LV and LA | normal size | enlarged (in chronic MR) |
| duration | can be short | holosystolic |
| Regurgitant volume | <30 ml | >60 ml |
| EROA | 0-20 cm2 | >40 cm2 |