As noted, renal hemodynamics increase markedly in normal
gestation. Renal plasma flow (RPF) and GFR decrease
in preeclampsia (25%); thus, values may still be above or
at those measured in the nonpregnant state.15 The decrement
in RPF is attributable to vasoconstriction, whereas the fall in
GFR relates both to the decrement of RPF and the development
of a glomerular lesion termed glomerular endotheliosis
(detailed elsewhere).