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鉴于Cu-IUD有效期限的问题在临床上十分重要,作者对使用期达4～9年者的情况进行了观察。选择身体健康、月经正常、产次0～4、年龄18～46岁的妇女109名,其中使用的CU-IUD分Cu-7和Cu-T二种,分别在置入43～90个月后取出。取出前采集宫腔液,用原子吸收光谱法测定其中铜含量。用镊子仔细地从节育器上取下铜丝,在精密天平上称量。结果表明,使用Cu-IUD4年后,宫腔液中铜的浓度稳定地下降,但不显著。根据从43～90个月
In view of the Cu-IUD expiration date is very clinically important, the authors of the use of up to 4 to 9 years were observed. Select healthy, normal menstruation, the production of 0 to 4, aged 18 to 46 years old women 109, which used CU-IUD points Cu-7 and Cu-T two were placed in 43 to 90 months take out. Uterine fluid was collected before removal, and the copper content was determined by atomic absorption spectrometry. Carefully remove the copper wire from the IUD using forceps and weigh on a precision balance. The results showed that after 4 years of Cu-IUD, the concentration of copper in uterine fluid steadily decreased, but not significantly. According to from 43 to 90 months