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目的比较MCu功能性宫内节育器与TCu220C普通型宫内节育器的避孕有效性、安全性和不良反应的发生情况。方法将300例健康经产妇分为2组,分别于月经间期放置MCu功能性IUD150例(MCu组)及TCu220C普通型IUD150例(TCu220C组)。放置后1、3、6及12个月随访,以生命表法统计两种IUD的效果。结果 MCu组使用1年无妊娠,脱落率及与IUD使用有关的终止率均低于TCu220C组;而在月经周期的改变、月经量的改变、子宫淋漓出血方面MCu组亦低于TCu220C组。结论此种无支架,选用特殊的医用形状记忆合金制成的IUD与人体宫腔有良好的组织相容性,具有低脱落率、出血及不良反应少的特点,是目前比较理想的IUD。
Objective To compare the contraceptive effectiveness, safety and adverse reactions of MCu functional intrauterine devices and TCu220C common intrauterine devices. Methods Three hundred healthy pregnant women were divided into two groups. Fifty cases of MCu functional IUD150 and TCu220C common IUD150 cases (TCu220C group) were placed in the intermenstrual period respectively. After 1, 3, 6 and 12 months of follow-up, the effects of both types of IUDs were calculated using the life table method. Results The MCu group was less pregnant than TCu220C with one year of pregnancy-free rate and termination rate associated with the use of IUD. MCu group was also lower than TCu220C group in the changes of menstrual cycle, menstrual flow and uterine bleeding. Conclusion This kind of IUD with no stent and made of special medical shape memory alloy has good histocompatibility with human uterine cavity and has characteristics of low exfoliation rate, less bleeding and less adverse reactions. It is an ideal IUD at present.