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目的通过干预把Tcu-M型宫内节育器(IUD)放到子宫内膜腔的宫底部位,观察其避孕效果。方法上环时即时B超测距,子宫纵切图像上测量IUD上缘至宫底外缘距离,其设定距离是≤14 mm,若其距离较宫底厚度≥3 mm则予以干预重置,对放置Tcu-M型避孕986例育龄妇女18个月避孕效果进行前瞻性研究分析。结果放置节育器18个月继续存放率、脱落率、带器妊娠率分别为87.34%,3.49%,0.91%,哺乳期置器妇女发生脱落的相对危险度是非哺乳期置器妇女的2.4倍;从事体力劳动的对象置器后带器妊娠和总停用发生的相对危险是非体力劳动对象的2.364倍和2.859倍;其他协变量均不是影响的重要因素。结论二维B超的问世使IUD宫内定位的无损伤常规监测成为可能,应用于置器技术质量培训和临床操作,把IUD置入宫底部位提高置器质量可以进一步提高IUD的避孕效果。
Objective To intervene in the Tcu-M intrauterine device (IUD) placed in the endometrial cavity of the uterine part of the site to observe the contraceptive effect. Methods Instantaneous B-range distance measurement on the ring, the longitudinal edge of the uterus measured IUD to the edge of the outer edge of the uterus, the set distance is ≤ 14 mm, if the distance is greater than the thickness of the end of the palace ≥ 3 mm intervention reset , Contraceptive placement of Tcu-M type 986 women of childbearing age 18 months of contraceptive effect prospective study. Results The 18 - month survival rate of IUD insertion was 87.34%, 3.49% and 0.91% respectively. The relative risk of exfoliation in lactating period was 2.4 times that of non - lactating periodontal device women. The relative risk of post-partum device pregnancy and total disablement for manual labor was 2.364 times and 2.859 times that of non-manual labor objects, respectively; other covariates were not the most important factors. Conclusion The advent of two-dimensional B-ultrasound has made it possible to perform routine undamaged monitoring of intrauterine localization of IUD. The application of IUD to the uterus at the bottom of the uterus to improve the quality of the device can further improve the IUD’s contraceptive effectiveness.