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过去对放置IUD困难的病例偶尔扩张宫颈以促进IUD放入,但需要扩张宫颈的有关病人的表现,以及扩张是否增加IUD早期脱落的危险很少研究,本文应用和分析了1972年以来,FHI(Family Health Iternational)与国际多中心IUD临床试验协作的大量IUD资料以回答此问题。到1987年3月,49个中心已作了50例或多于50例在月经间期放置IUD,37个中心报道至少有1例行宫颈扩张,参与这次分析的,以1个中心已作了10
In the past, patients with difficult IUD placement had occasional dilatation of the cervix to promote IUD insertion, but the need for dilatation of the cervix in relation to the patient’s performance and whether the dilatation increased the risk of early IUD shedding were poorly studied. This article uses and analyzes the effect of FHI Family Health International) in collaboration with the International Multicentre IUD clinical trial to answer this question. By March 1987, 49 centers had made 50 or more IUDs in inter-menstrual periods and 37 centers reported that at least 1 patient had cervical dilatation. One center was involved in this analysis 10