宫颈长度对早产的预测意义及其相对于孕期的预测效果  

Estimation on the Prediction of Cervical Length for Premature Delivery and the Relevant Concern about the Pregnancy Period

作　　者：蔡湘芬[1] 王金亮[1] 方芸萍[1] 洪晓婷[1] 黄少玲[1] 

机构地区：[1]潮州市妇幼保健院,广东潮州521011

出　　处：《中外医学研究》2012年第22期14-15,共2页CHINESE AND FOREIGN MEDICAL RESEARCH

基　　金：潮州市科技计划项目(项目编号:0008630160624020)

摘　　要：目的：探讨宫颈长度测量对早产的预测效果,并分析其与孕期之间关系,提高诊断的科学性.方法：对2011 年5-7 月的首诊孕妇进行普查追踪,采用SAS 9.2 对资料进行描述性统计分析.结果：早产组的宫颈长度明显短于非早产组（Z=8.3293,P=0.001）,宫颈长度随着孕周的退后而逐渐缩短（ 字2=163.1823,P=0.001）,孕后期（P5～6） 的宫颈长度均数18.86 mm.以宫颈长度〈25 mm 作为预测早产的阳性指标,其特异度随着孕期的退后而下降,孕后期（P5～6） 的特异度均为0.5000.多因素分析显示了孕期和宫颈长度都对预测早产有明显的影响.结论：宫颈长度测量具备预测早产的普遍意义,然而随着孕期推后的子宫正常生理,判别点需要进行调整以降低误诊可能.宫颈长度的基于定量的定性判别可能更适合于孕中期,孕后期则要考虑到更多因素的综合指示意义.Objective ：Toestimatetheprediconofcorvicallengthforprematuredeliveryandanalysisthedistributionbypregnancyperiod. thus promote the efficacy of the diagnose.Methods .＇Routine investigation and follow-up was conducted among the pregnant women who initiated attending the clinic during 5-7, 2011.Data was collected and descriptive statistics was done by SAS System.Results ：The cervical length among the premature delivery was shorter than the natural delivery（Z=8.3293, P=0.001）.As the pregnancy time accelerating, the cervical length become shorter（x2=163.1823, P=0.001）, the average length among after 31 weeks （P5-6） is 18.86 ram.Since 25 mm is set as a cnt-point to predict premature delivery, as for the participants in P5~6, the specificity hits 0.5000.Logistic regression showed the combining effect of pregnancy period and cervical length on the prediction for premature delivery.Conclusion ： Cervical length can be used in a clinical setting to predict the premature delivery, but the cut-point should be adjusted as to the pregnancy period, the ordinary cut-point（25 mm） must be effective in the mid-period pregnancy, and as for the last period, more factor must be concerned.

关 键 词：宫颈长度 孕期 早产 预测 

分 类 号：R714.21[医药卫生—妇产科学]