MITRAL REGURGITATION
Apostolakis and Baikoussis Journal of Cardiothoracic Surgery 2009 4:34
| Severity | Regurgitant Fraction |
|
mild |
≤ 15% |
|
moderate |
16-24% |
|
moderate-severe |
25–42% |
|
severe |
> 42% |
MRI QUANTIFICATION
1. LV stroke volume and Aorta forward flow
Mitral regurgitant volume (MRV) is the difference between the LV stroke volume (LVSV) and the aortic forward stroke volume (AoSV).
MRV (mL/beat) = LVSV – AoSV.
Regurgitant fraction (RF) is the ratio of the MRV to LVSV
RF (%) = (MRV × LVSV) × 100
2. LV and RV stroke volumes
MRV = LVSV-RVS