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目的：探讨宫颈长度及宫颈漏斗形成与早产发生的关系，为确诊真正早产寻找新的方法。方法：用阴道超声测量我院１６０例有先兆早产症状孕妇的宫颈长度及宫颈内口形状，同时肛门指检行宫颈Ｂｉｓｈｏｐ评分，以宫颈长度２ｃｍ及宫颈漏斗为标准，Ｂｉｓｈｏｐ评分以５分为标准。结果：宫颈长度≤ ２ ｃｍ者的早产发生率（８２．５％）明显大于宫颈长度＞２ｃｍ的早产发生率（５％），差异有权显著意义（Ｐ＜０．０１）；有宫颈漏斗形成的孕妇（９４．７４％）发生早产，明显多于无宫颈漏斗形成者的早产发生率（２．４６％），差异有极显著意义（Ｐ＜０．０１），而宫颈Ｂｉｓｈｏｐ评分＜５分者的早产率（２３．６％），与宫颈评分≥５分者的早产率（２５％）相比，差异无显著意义（Ｐ＞０．０５）。结论：宫颈长度及宫颈漏斗形成对早产的诊断有重要参考价值，而宫颈Ｂｉｓｈｏｐ评分则无预测价值。
Objective: To investigate the relationship between the length of cervix and the formation of cervical funnel and the occurrence of prematurity, and to find a new method for the diagnosis of true prematurity. Methods: The length of cervix and the shape of internal mouth of cervix in 160 pregnant women with threatened preterm birth were measured by vaginal ultrasound. The cervical Bishop score was taken by anus finger test. The cervical length was 2cm and the cervical funnel was taken as standard. The Bishop score was set as 5 . Results: The incidence of preterm birth in patients with cervical length less than 2 cm (82.5%) was significantly higher than that in patients with cervical length> 2 cm (5%) (P <0.01) (94.74%) were significantly higher than those without cervix funnel (2.46%) (P <0.01), while cervical Bishop score <5 (23.6%) had no significant difference (P> 0.05) when compared with those with cervical score≥5 points (25%). Conclusion: The length of cervix and the formation of cervical funnel have important reference value in the diagnosis of prematurity, while cervical Bishop score has no predictive value.