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本文就不锈钢环型节育器长期放置是否安全问题进行了临床观察。通过6250例放置15年的随访,采用生命表法统计,15年净累计妊娠率为5.51、脱落率为17.74、因症取出率21.74、继续存放率6.48/100妇女。带器妊娠、脱落和副反应以第一、二年发生率较高,随着放置时间的延长渐趋稳定,而非因症取出(如到期、绝经等)则增加。6250例中发现宫颈癌5例,宫体癌2例,其发生率低于上海1971—1972年普查的发生率。因感染而取出43例(0.85%),带环宫外孕9例(发生在二年内者6例),金属环子宫外异位2例,未发生严重并发症。通过临床及子宫内膜病理检查,认为不锈钢环型宫内节育器没有增加子宫癌的发病率,并发症又很少,所以使用者如无临床症状,可以存放15—20年。
In this paper, the long-term placement of stainless steel circular IUD whether the safety of clinical observation. By 6250 cases placed 15 years of follow-up, the use of life table statistics, 15-year net cumulative pregnancy rate was 5.51, the exfoliation rate was 17.74, due to disease removal rate of 21.74, the continuation rate of 6.48 / 100 women. Pregnancy, shedding and side effects were higher in the first and second years of pregnancy, with stabilization as prolonged as time to placement, and non-exacerbation (such as maturity, menopause, etc.) increased. In 6250 cases, 5 cases of cervical cancer and 2 cases of palace cancer were found, whose incidence was lower than that of Shanghai 1971-1972 census. There were 43 cases (0.85%) with ectopic pregnancy, 9 cases with ectopic pregnancy (6 cases within 2 years), and 2 cases with ectopic metal ring. No serious complications occurred. Through clinical and endometrial pathological examination, that the stainless steel ring IUD did not increase the incidence of uterine cancer, complications and very few, so users without clinical symptoms, can be stored for 15-20 years.