Application value of placenta three-dimensional color power Doppler vascular ultrasound imaging in predicting fetal growth restriction in early pregnancy
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摘要:
目的 采用胎盘三维彩色能量多普勒血管超声成像(3D-CPA)检测早孕期产妇的胎盘三维能量多普勒指数,并分析其预测胎儿生长受限(FGR)的临床价值。 方法 选取2022年1月—2023年1月于湖州市妇幼保健院行早孕期胎儿结构筛查的300名孕妇为研究对象,分娩后确诊为FGR的胎儿纳入研究组(150例),确诊为正常的胎儿纳入对照组(150例)。对比2组血流指数(FI)、血管化指数(VI)、血管化-血流指数(VFI)和妊娠结局,将差异有统计学意义的指标纳入多因素logistic回归分析模型,绘制ROC曲线分析相关指标预测FGR的价值。 结果 研究组早产、剖宫产及胎儿窘迫发生率明显高于对照组,住院时间长于对照组,FI、VI及VFI均低于对照组,差异均有统计学意义(P<0.05)。多因素logistic回归模型分析显示,FI(OR=0.919)、VI(OR=0.860)、VFI(OR=0.703)均是FGR的影响因素(P<0.05)。ROC曲线显示,FI、VI及VFI的AUC分别为0.653、0.702及0.802。 结论 与胎儿正常生长发育相比,存在FGR的胎盘内血流灌注减弱,且导致早产、剖宫产及胎儿窘迫等不良妊娠结局发生率升高;早孕期3D-CPA对FGR有重要的预测价值,可作为FGR诊断的辅助检查手段。 Abstract:Objective The placental three-dimensional color power angiographic (3D-CPA) was used to detect the placental three-dimensional power Doppler index of early pregnant women, and its clinical value in predicting fetal growth restriction (FGR) was analyzed. Methods From January 2022 to January 2023, 300 pregnant women who underwent fetal structure screening in Huzhou Maternal and Child Health Hospital were selected as the research objects. Fetuses diagnosed as FGR after delivery were included in the study group (n=150) and normal fetuses were included in the control group (n=150). The blood flow index (FI), vascularization index (VI), vascularization-flow index (VFI) and pregnancy outcome were compared between the two groups, and a multivariate logistic regression analysis model was constructed with statistically significant indicators, and the ROC curve was drawn to analyze the value of related indicators in predicting FGR. Results The incidence of premature delivery, cesarean section and fetal distress in the study group were significantly higher than those in the control group, while the FI, VI and VFI were lower than those in the control group, with statistical significance (P < 0.05). Multivariate logistic regression model analysis showed that FI (OR=0.919), VI (OR=0.860) and VFI (OR=0.703) were the influencing factors of FGR (P < 0.05). The ROC curve showed that the AUC of FI, VI and VFI were 0.653, 0.702 and 0.802, respectively. Conclusion Compared with normal fetal growth and development, placental blood perfusion with FGR is weakened, and the incidence of adverse pregnancy outcomes such as premature delivery, cesarean section and fetal distress is increased. 3D-CPA in early pregnancy has important predictive value for FGR, and can be used as an auxiliary examination method for FGR diagnosis. -
表 1 2组孕妇一般资料比较
Table 1. Comparison of general information between two groups of pregnant women
组别 例数 年龄(x±s, 岁) 初产妇[例(%)] 孕次(x±s, 次) 孕周(x±s, 周) BMI(x±s) 对照组 150 31.58±4.60 82(54.67) 1.76±0.41 11.15±0.83 24.13±2.16 研究组 150 31.20±4.54 75(50.00) 1.82±0.46 11.07±0.92 24.25±2.19 统计量 0.720a 0.655b 1.193a 0.791a 0.478a P值 0.472 0.418 0.234 0.430 0.633 注:a为t值,b为χ2值。 表 2 2组孕妇妊娠结局比较
Table 2. Comparison of pregnancy outcomes between two groups of pregnant women
组别 例数 早产[例(%)] 剖宫产[例(%)] 新生儿窒息[例(%)] 胎儿窘迫[例(%)] 住院时间[M(P25, P75), d] 对照组 150 5(3.33) 31(20.67) 2(1.33) 3(2.00) 4(2, 7) 研究组 150 39(26.00) 46(30.67) 4(2.67) 11(7.33) 7(3, 12) 统计量 30.788a 3.931a 0.170a 4.795a 8.607b P值 <0.001 0.047 0.680 0.029 <0.001 注:a为χ2值,b为Z值。 表 3 2组孕妇胎盘三维能量多普勒指数比较(x±s)
Table 3. Comparison of three-dimensional power Doppler index of placenta between two groups of pregnant women(x±s)
组别 例数 FI VI VFI 对照组 150 32.16±7.69 26.48±6.92 11.35±3.98 研究组 150 26.74±6.82 21.45±6.03 8.03±3.14 t值 6.458 6.712 8.021 P值 <0.001 <0.001 <0.001 表 4 变量赋值情况
Table 4. Assignment of Variables
变量 赋值方法 是否发生FGR 是=1,否=0 FI 以实际值赋值 VI 以实际值赋值 VFI 以实际值赋值 表 5 FGR影响因素的多因素logistic回归分析
Table 5. Multivariate logistic regression analysis of FGR influencing factors
变量 B SE Waldχ2 P值 OR值 95% CI FI -0.085 0.025 11.815 0.001 0.919 0.875~0.964 VI -0.150 0.030 25.162 <0.001 0.860 0.811~0.912 VFI -0.352 0.049 51.181 <0.001 0.703 0.639~0.775 表 6 FI、VI及VFI对FGR的预测价值分析
Table 6. Accuracy and predictive value of FGR predicted by FI, VI and VFI
项目 AUC 95% CI 灵敏度(%) 特异度(%) FI 0.653 0.596~0.707 74.00 52.00 VI 0.702 0.646~0.753 65.33 66.67 VFI 0.802 0.752~0.845 70.67 76.67 -
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