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关于宫内节育器究竟应该在月经周期的什么时间放置问题,是有争论的。早在1931年Graefenberg就指出应该在行经期放置避孕环,因可防止误将避孕环放入已妊娠的子宫内。各国学者也主张和支持放置节育器的时间应该在行经期,其理由主要有两个方面: 一、行经期子宫颈口略微开大,容易放入,损伤机会少,疼痛少。二、行经期间放置所引起的出血不显著。 1968年世界卫生组织技术报告结论认为:在月经周期的早期放置节育器虽有缺点,但其优点远远超过其缺点。
It is debatable whether IUDs should be placed at what time of the menstrual cycle. As early as 1931, Graefenberg pointed out that it should be placed during the menstrual cycle, because it can prevent the false ring into the pregnant womb. Scholars in various countries also advocate and support the placement of the IUD should be in the menstrual period, the reasons there are two main aspects: First, the menstrual period cervix slightly open large, easy to insert, less chance of injury, less pain. Second, during the placement caused by bleeding is not significant. The 1968 WHO Technical Report concludes that although there are drawbacks to placing an IUD in the early stages of the menstrual cycle, its advantages go far beyond its disadvantages.