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目的探讨经阴道超声检测宫颈长度及形态预测早产的价值。方法回顾性分析产前经阴道超声检测的95例孕妇宫颈长度及形态与妊娠结局。结果宫颈长度越短,越容易发生早产(r=0.568,P<0.01)。“V”、“U”形宫颈早产率明显增高,与“T”、“Y”形宫颈早产发生率比较,差异有统计学意义(P<0.01)。宫颈长度≤25mm为预测早产的最佳临界点,灵敏度、特异度、阳性预测值和阴性预测值分别为89.7%、89.4%、89.7%、84.8%。结论经阴道超声检测宫颈长度及形态对预测早产具有重要的临床价值。
Objective To investigate the value of transvaginal ultrasonography in detecting the length and morphology of the cervix in predicting preterm delivery. Methods Retrospective analysis of prenatal transvaginal ultrasound in 95 cases of pregnant women with cervical length and shape and pregnancy outcome. Results The shorter the cervical length, the more prone to premature birth (r = 0.568, P <0.01). The prevalence of cervical premature birth was significantly higher in the “V ” and “U ” groups than that in the “T” and “Y” forms of cervical premature birth (P <0.01). Cervical length ≤25mm was the best critical point for predicting preterm delivery. The sensitivity, specificity, positive predictive value and negative predictive value were 89.7%, 89.4%, 89.7% and 84.8% respectively. Conclusion Transvaginal ultrasonography to detect the length and shape of the cervix has important clinical value in predicting preterm birth.