Table 3 Recommended grading of MR by CMR assessment
From: Assessment of mitral valve regurgitation by cardiovascular magnetic resonance imaging
Type of MR | Grading of severity | |||
|---|---|---|---|---|
Mild | Moderate | Severe | Very severe | |
Primary | MRRF <20%a | MRRF = 20–39%a | MRRF 40–50%; MRvol >55–60 ml | MRRF >50% |
Secondary | MRvol <30 ml | MRvol = 30–60 ml | MRvol ≥60 ml | – |
