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PISA |
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Effective Regurgitant Orifice Area (ERO) Regurgitant Volume
Cubic Centermiters (RVCC) Grade 1 Mild
< 20
< 30 Grade 2 Moderate
20 – 29
30 – 44 Grade 3 Moderate Severe
30 – 39
45 - 59 Grade 4 Severe
> 40
> 60 ERO = Flow / Velocity |
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