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马来亚大学妇产科及化学科研究了三种带铜的宫内节育器(TCu220c,101例;MLCu250,110例;Cu~7,117例)的铜的丧失率(Copper Loss)。TCu220c 为1.39%,MLCu250为0.88%,Cu~7为0.72%。第一种较后两种丧失率为高,差异显著(P<0.05)。铜的丧失率随应用年限增加而降低,以MLCu250为例,头一年每日丧失为40μg。作者认为铜的丧失率不仅取决于铜的释放方法的不同,而且也取决于带器者子宫内环境的个体差异。带铜宫内节育器的带器妊娠与铜丧失的稳定性有
The Copper Loss of copper from three Cu-I intrauterine devices (TCu220c, 101; MLCu250, 110; Cu-7, 117) was studied in the Department of Obstetrics and Gynecology, University of Malaya. 1.39% for TCu220c, 0.88% for MLCu250 and 0.72% for Cu ~ 7. The first two later loss rate was high, the difference was significant (P <0.05). The loss rate of copper decreased with the increase of the service life. Taking MLCu250 as an example, the loss of copper was 40μg per day in the first year. The author believes that the rate of loss of copper depends not only on the method of release of copper, but also on the individual differences in the womb’s uterine environment. Strap with copper IUD pregnancy and loss of stability with copper