Repeat measurements of uterine artery pulsatility index, mean arterial pressure and serum placental growth factor at 12, 22 and 32 weeks in prediction of pre-eclampsia

Ultrasound Obstet Gynecol. 2017 Aug;50(2):221-227. doi: 10.1002/uog.17403. Epub 2017 Jul 9.


Objective: To investigate the potential value of repeat measurements of uterine artery pulsatility index (UtA-PI), mean arterial pressure (MAP) and serum placental growth factor (PlGF) at 12, 22 and 32 weeks' gestation in the prediction of pre-eclampsia (PE) developing after 32 weeks.

Methods: Data were derived from prospective screening for adverse obstetric outcomes in women attending their routine hospital visit at 11-13, 19-24 and/or 30-34 weeks' gestation in two maternity hospitals in England. UtA-PI, MAP and PlGF were measured. Bayes' theorem was used to combine the a-priori risk from maternal factors with UtA-PI, MAP and PlGF multiples of the median values. The performance of screening for PE developing after the 30-34-week visit by UtA-PI, MAP and PlGF measured at 11-13, 19-24 and 30-34 weeks and their combinations was examined.

Results: Screening at 30-34 weeks by UtA-PI, MAP and PlGF detected, at a 10% false-positive rate, 79%, 86% and 92% of preterm PE and 42%, 50% and 56% of term PE. The addition of biomarker values at 11-13 and/or 19-24 weeks was not associated with any improvement in the detection rate of preterm PE; in the case of term PE, there was a marginal (< 2%) improvement in detection for UtA-PI and MAP and a modest improvement of about 5% for PlGF.

Conclusion: Measurements of UtA-PI, MAP and PlGF in the first and/or second trimester have a small or no effect on improving the prediction of PE provided by screening in the early third trimester. Copyright © 2017 ISUOG. Published by John Wiley & Sons Ltd.

Keywords: mean arterial pressure; placental growth factor; pre-eclampsia; repeat measurements; screening; soluble fms-like tyrosine kinase-1; uterine artery Doppler.

Publication types

  • Multicenter Study
  • Validation Study

MeSH terms

  • Area Under Curve
  • Arterial Pressure
  • Biomarkers
  • England
  • Female
  • Gestational Age
  • Humans
  • Placenta Growth Factor / blood*
  • Pre-Eclampsia / blood
  • Pre-Eclampsia / diagnosis
  • Pre-Eclampsia / physiopathology*
  • Predictive Value of Tests
  • Pregnancy
  • Prenatal Diagnosis*
  • Pulsatile Flow
  • Uterine Artery / physiopathology*


  • Biomarkers
  • PGF protein, human
  • Placenta Growth Factor