JAMA:初产妇筛查自发性早产是否应该检测阴道子宫颈长度和胎儿纤维连接蛋白水平?

2017-03-17 MedSci MedSci原创

自发性早产是婴儿死亡的主要原因。基于以前的怀孕结果来预测其是否发生的方法在首次怀孕妇女中不可行。近期,一项发表在权威杂志JAMA上的研究旨在评估常用筛查的准确性,连续测量阴道胎儿纤连蛋白水平和子宫颈的长度,以预测未产妇妇女的自发早产。此项研究是自2010年10月至2014年5月的前瞻性观察性队列研究,收集来自美国8个临床站点的单胎妊娠未产妇。女性和临床医生对结果不知情,除非确定患者为小于15mm的

自发性早产是婴儿死亡的主要原因。基于以前的怀孕结果来预测其是否发生的方法在首次怀孕妇女中不可行。


近期,一项发表在权威杂志JAMA上的研究旨在评估常用筛查的准确性,连续测量阴道胎儿纤连蛋白水平和子宫颈的长度,以预测未产妇妇女的自发早产。

此项研究是自2010年10月至2014年5月的前瞻性观察性队列研究,收集来自美国8个临床站点的单胎妊娠未产妇。女性和临床医生对结果不知情,除非确定患者为小于15mm的颈椎缩短。

经阴道子宫颈长度和定量阴道胎儿纤连蛋白水平在2次研究随访时检测,间隔4周及以上。

此项研究的主要终点是小于37周的自发性早产。在每次随访时独立地检测子宫颈长度和定量胎儿纤连蛋白水平。比较自发早产与所有其他出生的测量分布。32周前的自发性早产是次要终点。

此项研究共包括9410名妇女(中位年龄,27.0 岁[四分位间距,9.0]; 60.7%为非西班牙裔白人,13.8%非西班牙裔黑人,16.5%西班牙裔,4.0%亚洲人和5.1%为其他)其中有474例(5.0%)有自发性早产,335例(3.6%)有医学指示早产,8601例(91.4%)有新生儿。

在自发性早产的妇女中,在16至22周妊娠的为439例(8.0%),其中35例中的子宫颈部长度为25mm以下;在22至30周妊娠的为403例(23.3%),其中94例中的子宫颈部长度为25mm以下。

在16至22周时,在410例自发早产的女性(7.3%)中有30例胎儿纤连蛋白水平为50ng / mL或更高;在22至30周时,384例(8.1%)有31例。

单独的胎儿纤连蛋白水平在22和30周之间进行筛选的受试者工作特征曲线下面积为0.59(95%CI,0.56-0.62),单独的经阴道子宫颈长度为0.67(95%CI,0.64-0.70),作为连续变量的组合为0.67(95%CI,0.64-0.70)。

此项研究结果表明:在单胎妊娠的未产妇中,定量阴道胎儿纤连蛋白和连续经阴道超声子宫颈长度对自发早产的预测准确性低。这些发现不支持在这类妇女中常规使用这些测试。

原始出处:
Esplin MS, Elovitz MA, et al. Predictive Accuracy of Serial Transvaginal Cervical Lengths and Quantitative Vaginal Fetal Fibronectin Levels for Spontaneous Preterm Birth Among Nulliparous Women. JAMA. 2017 Mar 14;317(10):1047-1056. doi: 10.1001/jama.2017.1373.

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    2017-03-19 一闲
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    2017-03-19 sodoo