Cardiology
Estimated Plasma Volume Status (ePVS)
Quantifies intravascular plasma volume and congestion in heart failure.
&category=Cardiology)
Enlarge
Parameters
Estimated Plasma Volume Status (ePVS) Result
--
Formula
ePV (mL) = (1 - Hct) × [a + (b × Weight)]
Males: a=1530, b=41.0; Females: a=864, b=47.9
ePVS (%) = [(Actual ePV - Ideal ePV) / Ideal ePV] × 100Clinical Pearls
A non-invasive metric to monitor decongestion and optimize discharge timing in acute decompensated heart failure patients.
Limitations
Assumes normal red blood cell mass; chronic severe anemia or polycythemia can distort the relationship between hematocrit and plasma volume.