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1975年在泰国召开了世界卫生组织关于宫内节育器(IUD)的学术讨论会。会议建议应加强对IUD导致出血原因的研究,目的在于创制无出血副作用的IUD。本文报道这方面的研究近况。一、IUD导致出血原因的研究(一)子宫内膜形态学的改变:放置IUD期间,用电子显微镜观察使用IUD妇女的子宫内膜发现在小血管的管壁上有间隙或开孔,这是由于IUD的物理作用在子宫内能产生一种压力,在月经周期中持续地使子
In 1975, a WHO symposium on IUDs was held in Thailand. The meeting suggested that IUD should be strengthened to study the causes of bleeding in IUD with the aim of creating IUDs that have no bleeding side effects. This article reports recent developments in this area. A study of the causes of bleeding caused by IUD (A) changes in endometrial morphology: IUD placed during the observation with an electron microscope using IUD women’s endometrium was found in the walls of small blood vessels with gaps or openings, which is Due to the physical role of the IUD in the womb can produce a pressure in the menstrual cycle continued to sub