The abnormal umbilical venous-arterial index in the second half of pregnancy is associated with fetal outcome: A retrospective cross-sectional study.

ABSTRACT:

Objective

This study aims to observe the changes of the umbilical venous-arterial index (VAI) and investigate its predictive power for fetal outcome during the second half of pregnancy.

Methods

Fetuses with gestational age (GA) at 24-39 weeks were collected. According to the outcome score, neonates with outcome scores of 0, 1, or 2 were assigned to the control group, whereas those with scores of 3-12 were assigned to the compromised group. VAI was calculated as the ratio of normalized umbilical vein blood flow volume and umbilical artery pulsatility index. Regression analysis was performed to obtain the best-fitting curves between VAI and GA in the controls. Doppler parameters and perinatal outcomes were compared in both groups. Receiver operating characteristic analysis was

SUBMITTER: Wang L 

PROVIDER: S-EPMC10036777 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature