宫内节育器对比研究：利普斯D型环、达康盾和TCu-200。
Comparative IUD study: Lippes Loop D, Dalkon Shield and TCu-200.
作者信息
Medel M, Martinez C, Morehead J E, Osorio A, Pastene L, Rivera M, Zipper J
出版信息
Int J Gynaecol Obstet. 1978;16(2):157-61. doi: 10.1002/j.1879-3479.1978.tb00417.x.
A study was undertaken to look at the clinical behavior of the Dalkon Shield, the Lippes Loop D and the TCu-200 inserted by physicians and midwives. Differences among the three devices were not statistically significant, although lower expulsion rates and higher pregnancy rates were reported for the Dalkon Shield. No differences were observed between insertions performed by physicians and those performed by midwives; this emphasizes the efficiency of using paramedical personnel in the field of intrauterine contraception.
开展了一项研究，以观察由医生和助产士插入的达康盾、利普斯环D和TCu-200的临床使用情况。尽管据报告达康盾的脱落率较低而妊娠率较高，但三种器械之间的差异无统计学意义。未观察到医生插入与助产士插入之间存在差异；这强调了在宫内避孕领域使用辅助医务人员的有效性。
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