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. CONCLUSION: Increase of RIVI in women with PE is gestation-dependant.
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. CONCLUSION: Increase of RIVI in women with PE is gestation-dependant.
Authors: Anneleen S E Staelens; Stefan Van Cauwelaert; Kathleen Tomsin; Tinne Mesens; Manu L N Malbrain; Wilfried Gyselaers Journal: PLoS One Date: 2014-08-12 Impact factor: 3.240