经腹-经阴道超声序贯法评估子宫颈长度预测早产低风险单胎妊娠孕妇发生自发性早产的价值  

Transabdominal-transvaginal ultrasound cervical length sequential screening to predict the risk of spontaneous preterm birth in singleton pregnancy women with low risk of preterm birth

作　　者：杨岚[1] 王媛 张燕[1] 唐慧荣 王娅 王链链 李太顺 郑明明[1] 胡娅莉[1] 戴晨燕[1] 徐燕[1] Yang Lan;Wang Yuan;Zhang Yan;Tang Huirong;Wang Ya;Wang Lianlian;Li Taishun;Zheng Mingming;Hu Yali;Dai Chenyan;Xu Yan(Department of Obstetrics and Gynecology,Nanjing Drum Tower Hospital,Nanjing University Medical School,Nanjing 210016,China)

机构地区：[1]南京大学医学院附属鼓楼医院妇产医学中心,南京210008

出　　处：《中华妇产科杂志》2024年第9期667-674,共8页Chinese Journal of Obstetrics and Gynecology

基　　金：江苏省卫生健康科教能力提升工程(CXZX202229);南京鼓楼医院临床研究专项资金项目(2022-LCYJ-MS-14)。

摘　　要：目的探讨妊娠中期筛查胎儿结构时应用经腹-经阴道超声序贯法预测早产低风险单胎妊娠孕妇发生自发性早产的价值。方法本研究采用前瞻性纵向队列,纳入2023年1—9月在南京大学医学院附属鼓楼医院就诊的妊娠11~13+6周的单胎妊娠孕妇,于妊娠18~24周行妊娠中期筛查胎儿结构时应用经腹超声(TAU)测量的子宫颈长度初步筛查短子宫颈,对可疑者再行经阴道超声(TVU)检查(即经腹-经阴道超声序贯法),并在分娩后获得妊娠结局,短子宫颈定义为TVU子宫颈长度≤25 mm,终点观察指标为发生于妊娠20~36+6周的自发性早产和极早产(妊娠32周前分娩)。采用受试者工作特征(ROC)曲线下面积(AUC)评估TAU和TVU子宫颈长度预测自发性早产的效能,以及TAU子宫颈长度预测短子宫颈的效能,散点图评估TAU与TVU子宫颈长度的关系。结果最终562例单胎妊娠孕妇纳入本研究,包括自发性早产33例(其中极早产7例),足月分娩529例。(1)与足月分娩孕妇比较,自发性早产孕妇的TVU子宫颈长度(中位数分别为37.6、33.2 mm)、TAU子宫颈长度(中位数分别为34.0、29.9 mm)均较短,分别比较,差异均有统计学意义(P均<0.05)。(2)TVU子宫颈长度和TAU子宫颈长度预测早产,ROC曲线的AUC分别为0.699(95%CI为0.588~0.809)和0.657(95%CI为0.540~0.774)。TVU子宫颈长度≤25 mm预测自发性早产的敏感度为30.3%,特异度为98.9%,阳性预测值为62.5%,TAU子宫颈长度≤35 mm预测自发性早产的敏感度为66.7%,特异度为40.4%,阳性预测值为6.7%;TVU子宫颈长度≤25 mm预测极早产的敏感度为71.4%,特异度为98.0%,阳性预测值为31.3%,TAU子宫颈长度≤35 mm预测极早产的敏感度为85.7%,特异度为40.4%,阳性预测值为1.8%。(3)TAU子宫颈长度与TVU子宫颈长度之间呈显著正相关(r=0.622,P<0.001)。所有TVU子宫颈长度≤25 mm的孕妇,TAU子宫颈长度均<35 mm。仅在TAU子宫颈长度≤35 mm的孕妇中行TVU测量子宫颈�ObjectiveTo investigate the feasibility of predicting the risk of spontaneous preterm birth in singleton pregnancy women with low risk of preterm birth by transabdominal-transvaginal ultrasound cervical length sequential screening in the second trimester.MethodsThis prospective longitudinal cohort study included singleton pregnant women at 11-13+6 gestational weeks who were admitted to Nanjing Drum Tower Hospital from January 2023 to September 2023.Transabdominal and transvaginal cervical lengths were measured during the mid-trimester fetal ultrasound scan at 18-24 weeks,and pregnancy outcomes were obtained after delivery.A short cervix was defined as a transvaginal cervical length of≤25 mm,and the outcomes were defined as spontaneous preterm birth occurs between 20 and 36+6 weeks and extremely preterm birth before 32 weeks.The area under the receiver operating characteristic(ROC)curve was used to evaluate the effectiveness of predicting spontaneous preterm birth by transabdominal and transvaginal cervix length,as well as the effectiveness of predicting short cervix by transabdominal cervical length.The relationship between transabdominal and transvaginal cervical length was evaluated using a scatter plot.ResultsA total of 562 cases were included in this study,comprising 33 cases of spontaneous preterm birth(7 cases occurring before 32 weeks)and 529 cases of term birth.(1)Compared to the term birth group,transabdominal cervical length(median:37.6 vs 33.2 mm;Z=-3.838,P<0.001)and transvaginal cervical length(median:34.0 vs 29.9 mm,Z=-3.030,P=0.002)in the spontaneous preterm birth group were significantly shorter.(2)The areas under the ROC curve for predicting spontaneous preterm birth by transabdominal and transvaginal cervical length were 0.699(95%CI:0.588-0.809)and 0.657(95%CI:0.540-0.774),respectively.The sensitivity,specificity and positive predictive value of transvaginal cervical length ConclusionsIn singleton pregnancy women with low risk of preterm birth,transabdominal-transvaginal cervical length sequent

关 键 词：早产 预测 宫颈长度测量 超声检查 产前 妊娠中期 队列研究 

分 类 号：R714.21[医药卫生—妇产科学]