Doppler measurement of renal interlobar vein impedance index in uncomplicated and preeclamptic pregnancies.
OBJECTIVE
To define normal values of Renal interlobar vein impedance index (RIVI) throughout gestation, as a reference to RIVI in preeclampsia (PE).


METHODS
Longitudinal evaluation of 20 uncomplicated pregnancies (UP) by standard renal duplex scan, every 4 weeks during pregnancy and postpartum. Comparison of RIVI between 40 PE and UP, and plotting of PE values against the normal reference range at corresponding gestation.


RESULTS
In PE, RIVI is significantly higher than in UP, the difference being larger at the left side and in cases of preeclampsia remote from term.


CONCLUSIONS
Increase of RIVI in women with PE is gestation-dependant.
Gyselaers
W
W
Department of Obstetrics & Gynaecology, Ziekenhuis Oost Limburg, Genk, Belgium. wilfried.gyselaers@zol.be
Molenberghs
G
G
Van Mieghem
W
W
Ombelet
W
W
D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D010865:Pilot Projects; D049590:Postpartum Period; D011225:Pre-Eclampsia / Q000503:physiopathology*; D011247:Pregnancy; D011446:Prospective Studies; D012016:Reference Values; D012079:Renal Circulation; D012082:Renal Veins / Q000000981:diagnostic imaging*; D018616:Ultrasonography, Doppler, Duplex