Role of Doppler ultrasound at time of diagnosis of late‐onset fetal growth restriction in predicting adverse perinatal outcome: prospective cohort study

医学 脐动脉 产科 胎儿窘迫 胎龄 前瞻性队列研究 胎儿 阿普加评分 宫内生长受限 出生体重 接收机工作特性 小于胎龄 子宫动脉 怀孕 内科学 妊娠期 生物 遗传学
作者
Giuseppe Rizzo,Ilenia Mappa,В. О. Бицадзе,Maciej Słodki,J. Kh. Khizroeva,А. D. Makatsariya,F. D’Antonio
出处
期刊:Ultrasound in Obstetrics & Gynecology [Wiley]
卷期号:55 (6): 793-798 被引量:86
标识
DOI:10.1002/uog.20406
摘要

ABSTRACT Objective Pregnancies complicated by late‐onset fetal growth restriction (FGR) are at increased risk of short‐ and long‐term morbidities. Despite this, identification of cases at higher risk of adverse perinatal outcome, at the time of FGR diagnosis, is challenging. The aims of this study were to elucidate the strength of association between fetoplacental Doppler indices at the time of diagnosis of late‐onset FGR and adverse perinatal outcome, and to determine their predictive accuracy. Methods This was a prospective study of consecutive singleton pregnancies complicated by late‐onset FGR. Late‐onset FGR was defined as estimated fetal weight (EFW) or abdominal circumference (AC) < 3 rd centile, or EFW or AC < 10 th centile and umbilical artery (UA) pulsatility index (PI) > 95 th centile or cerebroplacental ratio (CPR) < 5 th centile, diagnosed after 32 weeks. EFW, uterine artery PI, UA‐PI, fetal middle cerebral artery (MCA) PI, CPR and umbilical vein blood flow normalized for fetal abdominal circumference (UVBF/AC) were recorded at the time of the diagnosis of FGR. Doppler variables were expressed as Z ‐scores for gestational age. Composite adverse perinatal outcome was defined as the occurrence of at least one of emergency Cesarean section for fetal distress, 5‐min Apgar score < 7, umbilical artery pH < 7.10 and neonatal admission to the special care unit. Logistic regression analysis was used to elucidate the strength of association between different ultrasound parameters and composite adverse perinatal outcome, and receiver‐operating‐characteristics (ROC)‐curve analysis was used to determine their predictive accuracy. Results In total, 243 consecutive singleton pregnancies complicated by late‐onset FGR were included. Composite adverse perinatal outcome occurred in 32.5% (95% CI, 26.7–38.8%) of cases. In pregnancies with composite adverse perinatal outcome, compared with those without, mean uterine artery PI Z ‐score (2.23 ± 1.34 vs 1.88 ± 0.89, P = 0.02) was higher, while Z ‐scores of UVBF/AC (−1.93 ± 0.88 vs −0.89 ± 0.94, P ≤ 0.0001), MCA‐PI (−1.56 ± 0.93 vs −1.22 ± 0.84, P = 0.004) and CPR (−1.89 ± 1.12 vs −1.44 ± 1.02, P = 0.002) were lower. On multivariable logistic regression analysis, Z ‐scores of mean uterine artery PI ( P = 0.04), CPR ( P = 0.002) and UVBF/AC ( P = 0.001) were associated independently with composite adverse perinatal outcome. UVBF/AC Z ‐score had an area under the ROC curve (AUC) of 0.723 (95% CI, 0.64–0.80) for composite adverse perinatal outcome, demonstrating better accuracy than that of mean uterine artery PI Z ‐score (AUC, 0.593; 95% CI, 0.50–0.69) and CPR Z ‐score (AUC, 0.615; 95% CI, 0.52–0.71). A multiparametric prediction model including Z ‐scores of MCA‐PI, uterine artery PI and UVBF/AC had an AUC of 0.745 (95% CI, 0.66–0.83) for the prediction of composite adverse perinatal outcome. Conclusion While CPR and uterine artery PI assessed at the time of diagnosis are associated independently with composite adverse perinatal outcome in pregnancies complicated by late‐onset FGR, their diagnostic performance for composite adverse perinatal outcome is low. UVBF/AC showed better accuracy for prediction of composite adverse perinatal outcome, although its usefulness in clinical practice as a standalone predictor of adverse pregnancy outcome requires further research. Copyright © 2019 ISUOG. Published by John Wiley & Sons Ltd.
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