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本实验是随机比较三种IUD(LNG-菱型,LNG-Nova-T,TCu220C型)对月经血量,血红蛋白的影响。月经血量测定结果表明:LNG-菱型和LNG-Nova-T型,从置器后1个月,月经血量开始减少,时间延长减少更明显。而TCu220C相反,从置器后1个月,月经血量开始增加,至3个月增加更明显,到6个月虽然有下降的趋势但仍比置器前有所增加。血红蛋白测定结果表明,IUD虽然影响月经血量但对血红蛋白影响不明显,置器前后无差异。释放18甲基炔诺酮的IUD具有使月经血量减少的优点,更适合于平时月经血量较多,而又需要采用IUD避孕的妇女。
This experiment is a random comparison of three kinds of IUD (LNG-diamond, LNG-Nova-T, TCu220C type) on the menstrual blood, hemoglobin. The results of menstrual blood test showed that LNG-LNG-Nova-T and LNG-Nova-T decreased from 1 month after menstruation, and the time delay decreased more obviously. The TCu220C contrast, 1 month after from the device, menstrual blood volume began to increase to 3 months increased more significantly, to 6 months although there is a downward trend but still increased compared with pre-device. Hemoglobin measurement results show that, although IUD affect menstrual blood volume but hemoglobin did not affect significantly, no difference before and after placement of the device. Releasing the IUD of 18 norethindrone has the advantage of reducing the amount of menstrual blood and is more suitable for women who have more menstrual blood and require IUD contraception.