ECHONOMY Tools for Echocardiographic Calculations Muhamed Saric, MD, PhD New York University
Note that trained athletes may have physiologically enlarged IVC; the table below for estimation of RAP does not apply.
RAP (mm Hg)
Diameter (cm)
Inspiratory Collapse
Volume Depletion
<1.2
Total
0-5 Normal RAP
1.2 - 1.7
> 50%
6-10
>1.7
11-15
< 50%
> 15
None