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造成宫内节育器脱落和带器妊娠的因素很多,国内王家光等报道,造成宫内节育器脱落、带器妊娠的主要原因是由于节育器大小和形状与子宫几何形态、大小不相匹配和置器技术尚存在一定问题,从而提出妇女在置器时应进行宫腔测量。李敬之等在分析了70例带器妊娠者中节育器在宫内的位置之后,认为节育器位置下移是导致带器妊娠的主要原因。以上事实充分说明了科学置器和置器技术的重要性。目前,我国农村的育龄妇女中采用宫内节育器避孕比较普遍,这些妇女,特别是山区妇女的劳动强度较大,了解她们节育器使用情况对进一步改进工作有较大意义,为此我们于1983年3～4月间对余杭县三个公社(农村平原区)和桐庐县二个公社(农村山区)的14,739例49周岁以下的育龄妇女进行了回顾性调查,结果如下:
Cause IUD shedding and pregnancy with a lot of factors, such as domestic reports Wang Jiaguang, resulting in IUD shedding, pregnancy with the main reason is due to the size and shape of the IUD and uterine geometry, the size does not match and There are still some problems with the catheterization technique, which suggests that the uterine cavity measurement should be performed when the woman sets the device. Li Jing et al in the analysis of 70 cases of pregnancy with IUD in the uterine position, that IUD position down is the main reason leading to pregnancy with the device. The above facts fully demonstrate the importance of the science of tip and tip technology. At present, the contraceptive use of IUD in rural women of reproductive age in our country is relatively common. The labor intensity of these women, especially in mountainous areas, is quite high. It is of great significance to understand their use of IUDs for further improvement. Therefore, in 1983, From March to April, 14,739 women of childbearing age under 49 years of age from three communes in Yuhang County (rural plain) and two communes (rural mountainous areas) in Tonglu County were retrospectively reviewed. The results are as follows: