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目的:探讨超声测量宫颈长度(CL)预测双胎自然早产的临床价值。方法:选取2014年6月至2016年12月在台山妇幼保健院产检的双胎先兆早产孕妇120例,根据不同测量方式分为3组,每组各40例。Ⅰ组孕妇给予经腹部超声测量宫颈长度,Ⅱ组孕妇给予经阴道超声检查宫颈长度,Ⅲ组孕妇给予经会阴超声检查宫颈长度,对比分析3种测量宫颈长度与双胎自然早产的情况。结果:三组检测孕妇CL<2.6 cm的双胎自然早产的发生率均明显高于CL≥2.6 cm的孕妇,差异有统计学意义(P<0.05);Ⅰ组敏感性、特异性、阳性预测值、阴性预测值均低于Ⅱ组、Ⅲ组,且Ⅱ组、Ⅲ组检查预测双胎妊娠早产具有同样高的敏感性、特异性、阳性预测值、阴性预测值。结论:宫颈长度与双胎妊娠早产的发生存在紧密联系,而超声可对宫颈长度进行精准、客观的测量,在早产预测中有着重要的价值,而会阴超声测量方便、有效,准确性较高。
Objective: To investigate the clinical value of using ultrasound to measure cervical length (CL) in predicting natural premature delivery of twins. Methods: A total of 120 pregnant women with preterm birth of twins born in Taishan Maternity and Child Health Care Hospital from June 2014 to December 2016 were selected and divided into 3 groups according to different measurement methods, 40 cases in each group. Group Ⅰ pregnant women given abdominal ultrasound to measure the length of the cervix, Group Ⅱ pregnant women given transvaginal ultrasound to examine the length of the cervix, Ⅲ group of pregnant women given by the perineal ultrasound examination of cervical length, comparative analysis of three kinds of measurement of cervical length and twins natural premature delivery. Results: The incidences of spontaneous preterm birth in both groups were significantly higher than those of pregnant women with CL ≥ 2.6 cm (P <0.05). The sensitivity, specificity and positive predictive value of group Ⅰ The negative predictive value and the negative predictive value were all lower than those in group Ⅱ and group Ⅲ, and the predictive value, negative predictive value and positive predictive value were the same in group Ⅱ and group Ⅲ. Conclusion: Cervical length is closely related to the occurrence of prematurity in twin pregnancies. Ultrasonography can accurately and objectively measure the length of cervix. It has important value in predicting premature labor, while the perineal ultrasonography is convenient, effective and accurate.