出血是宫内节育器的主要副反应,也是提前取器的主要原因。为评价不同宫内节育器对妇女月经影响,我们采用Snowdon所报道的新的出血类型统计方法分析月经日记卡,观察不同类型宫内节育器对妇女月经影响的规律性及变异范围,并对同一种宫内节育器不同观察期行动态观察。 材料与方法 要求放置宫内节育器,经检查符合 Bleeding is the main side effects of IUD, but also the main reason for early retrieval. To evaluate the effect of different IUDs on women’s menstrual cycle, we used the new hemorrhagic type statistical method reported by Snowdon to analyze the menstrual diary card to observe the regularity and variation range of different types of IUDs on women’s menstruation, Dynamic observation of intrauterine device in different observation period. Materials and methods require placement of IUD, after checking compliance