Table 1 Echocardiographic criteria used to define severity of mitral regurgitation based on multi parametric quantitative and qualitative analysis as suggested by american Society of Echocardiography Reccomendations [16]
From: Non invasive evaluation of cardiomechanics in patients undergoing MitraClip procedure
Mitral Regurgitation Criteria | ||||
|---|---|---|---|---|
Grade | Mild 1+ | Moderate 2+ | Moderate to severe 3+ | Severe 4+ |
Color flow Doppler | <4 cm2 or <10 cm2 LA area | 4-6 cm2 or 10-30% of left LA area | 6 to <8 cm2 or 30% to <40% of LA area | >8 cm2 or >40% of LA area |
Regurgitant Volume (ml/beat) | <30 | 30-44 | 45-59 | >60 |
Regurgitant Fraction (%) | <30 | 30-39 | 40-49 | >50 |
Pulmonary Vein flow | Systolic Dominant | Diastolic Dominant | All Diastolic | Systolic Reversal |