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至今尚未阐明宫内节育器(IUD)避孕的机理,多数人认为,它是通过在宫内膜引起异物反应,改变宫腔内环境,使之不利于孕卵种植。最近报导用IUD妇女在黄体期的尿和血浆中,可测出H-CG,表示用IUD期间受孕率很高。另一方面也有报告用IUD者血浆中测不出HCG。本实验室在对用IUD者作其他目的的观察中发现有2例在黄体晚期血浆LH很高,而对此作进一步研究。受试者102例,为年龄在19～39岁,有规则月经周期,均用CuT-200宫内节育器的健康经产妇,月经周期为24～32天,其中30例在一月经周期中每周取2次血标本,其余72例在月经周期的最后5天
To date, the mechanism of IUD contraception has not been elucidated yet. Most people think that it is caused by foreign body reaction in the endometrium and changes the intrauterine environment so that it is not conducive to pregnancy. Recently it has been reported that IUD women can detect H-CG in the luteal phase urine and plasma, indicating high conception rates during IUD use. On the other hand, there are also reports of HCG undetectable in the plasma of IUDs. In our laboratory for other purposes with the IUD observed in 2 cases found in the late luteal plasma LH is high, but for further study. Subjects 102 cases, aged 19 to 39 years, regular menstrual cycle, are using CuT-200 IUD healthy pregnant women, the menstrual cycle is 24 to 32 days, of which 30 cases in a menstrual cycle, each The blood samples taken twice a week, the remaining 72 cases in the last 5 days of the menstrual cycle