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中华妇幼临床医学杂志(电子版) ›› 2025, Vol. 21 ›› Issue (01) : 37 -43. doi: 10.3877/cma.j.issn.1673-5250.2025.01.005

所属专题: 文献

妇儿影像学研究专辑

胎盘MRI评分联合临床特征对胎盘植入性疾病孕妇产后出血的预测价值
刘振清1, 黄莉1, 王帅1, 谢晨欣1, 刘鸿圣1,()   
  1. 1. 广州医科大学附属妇女儿童医疗中心放射科,广州 510180
  • 收稿日期:2024-12-01 修回日期:2025-01-15 出版日期:2025-02-01
  • 通信作者: 刘鸿圣

Value of MRI scoring system combined with clinical features in predicting postpartum hemorrhage for placenta accreta spectrum disorders

Zhenqing Liu1, Li Huang1, Shuai Wang1, Chenxin Xie1, Hongsheng Liu1,()   

  1. 1. Department of Radiology,Guangzhou Women and Children's Medical Center,Guangzhou Medical University,Guangzhou 510180,Guangdong Province,China
  • Received:2024-12-01 Revised:2025-01-15 Published:2025-02-01
  • Corresponding author: Hongsheng Liu
引用本文:

刘振清, 黄莉, 王帅, 谢晨欣, 刘鸿圣. 胎盘MRI评分联合临床特征对胎盘植入性疾病孕妇产后出血的预测价值[J/OL]. 中华妇幼临床医学杂志(电子版), 2025, 21(01): 37-43.

Zhenqing Liu, Li Huang, Shuai Wang, Chenxin Xie, Hongsheng Liu. Value of MRI scoring system combined with clinical features in predicting postpartum hemorrhage for placenta accreta spectrum disorders[J/OL]. Chinese Journal of Obstetrics & Gynecology and Pediatrics(Electronic Edition), 2025, 21(01): 37-43.

目的

探讨胎盘MRI评分联合临床特征对胎盘植入性疾病(PAS)孕妇产后出血(PPH)的预测价值。

方法

选择2019年2月至2023年9月在广州医科大学附属妇女儿童医疗中心经剖宫产术分娩时证实为PAS的102例患者为研究对象。根据PPH 量,将其分为研究组(n=64,PPH 量≥1 000 m L)和对照组(n=38,PPH 量<1 000 m L)。采用胎盘MRI评分,对PAS孕妇的产前胎盘MRI征象进行评分,再采用单因素分析及多因素非条件logistic回归分析法对PAS孕妇发生PPH 危险因素进行分析,并构建相关回归方程(预测模型),采用受试者工作特征(ROC)曲线,评估该模型对PAS孕妇发生PPH 的预测价值。本研究经广州医科大学附属妇女儿童医疗中心伦理委员会审核通过(伦理审批号:穗妇儿科伦通字〔2022〕第317B00号)。

结果

①2组患者PAS类型构成比和胎盘MRI评分总分比较,差异均有统计学意义(P<0.05)。②多因素非条件logistic回归分析结果显示,胎盘植入/穿透(OR=0.991,95%CI:0.982~1.000,P=0.044)与胎盘MRI评分总分(OR=0.996,95%CI:0.993~0.998,P=0.002)是PAS患者发生PPH 的独立危险因素。③基于上述导致PAS孕妇发生PPH 的2项独立危险因素,构建预测模型。该预测模型的ROC 曲线下面积(AUC)为0.915(95%CI:0.855~0.974),根据约登指数最大原则(约登指数为0.723),其预测PAS孕妇发生PPH 的敏感度为82.8%,特异度为89.5%。

结论

胎盘MRI评分总分、胎盘植入/穿透是预测PAS患者发生PPH 的独立危险因素。本研究构建的PAS患者发生PPH 相关预测模型,对于评估PAS孕妇发生PPH 具有一定预测价值。

Objective

To evaluate the predictive utility of MRI-based scoring c ombined with clinical parameters for postpartum hemorrhage(PPH)in patients with placenta accreta spectrum disorders (PAS).

Methods

A total of 102 patients with PAS confirmed by cesarean section at the Guangzhou Women and Children's Medical Center,Guangzhou Medical University between February 2019 and September 2023 were included.According to the amount of PPH,patients were divided into the study group (n=64,PPH volume≥1 000 m L)and the control group (n=38,PPH volume<1 000 m L).MRI scoring was used to evaluate prenatal MRI signs in PAS patients.Univariate analysis and multivariate unconditional logistic regression analysis were conducted to identify risk factors for PPH in PAS patients and to construct a related regression equation (predictive model).The predictive value of the model was evaluated by the receiver operating characteristic(ROC)curve.Ethical approval for this study was granted by the Ethics Committee of Guangzhou Women and Children's Medical Center,Guangzhou Medical University (Approval No.SFEY-2022-317B00).

Results

①Univariate analysis showed statistically significant differences in the distribution of PAS types and total MRI scores between two groups (P <0.05).②Multivariate logistic regression analysis revealed that placental implantation/penetration (OR=0.991,95%CI:0.982-1.000,P=0.044)and total MRI score(OR=0.996,95%CI:0.993-0.998,P=0.002)were independent risk factors for PPH in PAS patients.③A predictive model was constructed based on the two independent risk factors.The area under the ROC curve(AUC)of the model was 0.915(95%CI:0.855-0.974).According to the Youden index maximum principle (Youden index was 0.723),the sensitivity and specificity of predicting PPH in PAS patients were 82.8%and 89.5%,respectively.

Conclusions

Total MRI score and placental implantation/penetration are independent risk factors for PPH in PAS.The constructed predictive model has certain predictive value for assessing PPH in PAS patients.

表1 本研究PAS孕妇胎盘MRI检查参数设置
表2 本研究PAS孕妇胎盘MRI评分标准
图1 本研究1例PAS孕妇胎盘植入MRI征象[图1A:T2WI矢状位,红色箭头示中央型前置胎盘,白色箭头示T2WI胎盘内低信号带;图1B:T2WI矢状位,白色箭头示T2WI胎盘床低信号线消失;图1C:T2WI横轴位,胎盘/子宫膨出,胎盘穿透,子宫肌层中断(白色箭头所示);图1D:T2WI横轴位,红色箭头示胎盘内异常血管,白色箭头示胎盘床异生血管]
表3 2组PAS孕妇一般临床资料比较
表4 导致PAS孕妇发生PPH 影响因素的多因素非条件logistic回归分析
图2 本研究建立的预测PAS孕妇发生PPH 相关影响因素的logistic回归方程(预测模型)的ROC曲线 注:本研究建立的预测PAS孕妇发生PPH 影响因素的logistic回归方程(预测模型)为y=0.245x1+2.985x2-5.754。其中,y 为PAS孕妇发生PPH 风险,x1 为胎盘MRI评分总分(实测值),χ2 为胎盘植入/穿透。PAS为胎盘植入性疾病,PPH 为产后出血,ROC曲线为受试者工作特征曲线
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