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最近,由国际儿童卫生和人类成长研究所(NICHD)发起的两个研究,对长期怀疑宫内节育器(IUD)和不孕间联系的直接证据已揭露出来。在西雅图(Seattle)的一个研究包括约90%的不孕专家。研究者比较了159例输卵管不孕无子女妇女和相等数目新母亲的IUD应用率,得出下列结论: 1.应用任何一种IUD与不应用IUD相比,其输卵管不孕的危险要比不用者多2.6倍。 2.IUD的类型影响危险性,Dalkon盾使用者与从未应用IUD的妇女相比,其输卵管不孕的危险性为6.8倍,Lippes环或Saf-T螺旋环使用者为3.2倍,铜7或铜T使用者如一段时间应用铜IUD,而另一时间使用塑料IUD危险性为1.9倍,但如果仅应用铜IUD则为1.3倍。Daling推测Copper抑
Recently, two studies sponsored by the International Institute of Child Health and Human Development (NICHD) have uncovered direct evidence of long-suspected intrauterine device (IUD) and infertility links. A study in Seattle includes about 90% of infertile professionals. The researchers compared the IUD rate of 159 women with tubal infertility and an equal number of new mothers and concluded that: 1. The risk of tubal infertility is less than that of IUD without any IUD 2.6 times more. 2. The type of IUD affects risk. Dalkon shield users are 6.8 times more likely to have a fallopian tube infertility than women who have never used an IUD, 3.2 times more likely to have Lippes or Saf-T helix users, and copper 7 Or copper T users applied copper IUD for a period of time while plastic IUD was 1.9 times more dangerous for another time, but 1.3 times more if copper IUD was used. Daling speculated that Copper suppression