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自1973年1月1日作者给未经选择的产妇于产褥早期放置铜T—200及铜7宫内节育器,至1977年6月30日观察达12个月以上的242例进行临床分析。163例使用铜T—200,79例使用铜7,最后两年多用铜T—200。大多数于产后6天放入节育器。年龄多为26～30岁,75％为1胎或2胎之后。产后6～8周、6个月,12个月分别进行复查,以后每隔一年复查一次。副作用:月经增多32％,经期延长27.5％,点滴出血8.6％,疼痛37％,阴道液增加25.4％,感染2.9％。
Since January 1, 1973, the author of unselected mothers placed copper T-200 and copper 7 intrauterine devices early in the puerperal, until June 30, 1977 observed more than 12 months for clinical analysis of 242 cases . 163 cases of copper T-200, 79 cases of copper 7, the last two years with copper T-200. Most are placed in the IUD 6 days postpartum. More than the age of 26 to 30 years old, 75% for 1 child or 2 after the child. Postpartum 6 to 8 weeks, 6 months, 12 months, respectively, for review, review once every other year. Side effects: Menstrual increased 32%, menstrual prolongation 27.5%, spotting bleeding 8.6%, pain 37%, vaginal fluid increased 25.4%, 2.9% infection.