Table 3 The severity of mitral regurgitation according to the Doppler echocardiography ([15]
From: Methods of estimation of mitral valve regurgitation for the cardiac surgeon
Severity Of Mitral Valve Regurgitation | I (mild) | II | III | IV (severe) |
|---|---|---|---|---|
Jet (% Left atrium) | < 15% | 15–30% | 35–50% | > 50% |
Spectral Doppler | Faint | - | - | Dense |
Vena contracta | < 3 mm | - | - | > 6 mm |
Pulmonary vein flow | S > D | - | - | Systolic reversed |
Right ventricle (ml) | < 30 | 30–45 | 45–59 | > 60 |
Effective regurgitant orifice (ERO in cm2) | < 0.20 | 0.20–0.29 | 0.30–0.39 | > 40 |
Proximal Isovelosity Surface Area (PISA) | small | - | - | large |