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米非司酮具有甾体结构 ,是一种抗孕激素 ,从子宫受体水平干扰孕酮对妊娠的支持作用 ,使妊娠的绒毛组织及蜕膜变性 ,内源性前列腺素释放 ,使黄体素下降 ,黄体萎缩 ,从而使依赖黄体发育的胚囊坏死而发生流产。近三年来 ,我所妇产科对停经 5 0天以内的 2 30例孕妇服药中止早孕 (简
Mifepristone has a steroidal structure and is an anti-progestin, which interferes with the progesterone-supporting effect on pregnancy from uterine receptor levels, degenerates the villi and decidua of pregnancy, releases endogenous prostaglandin, Decline, corpus luteum, so that dependent embryo sac necrosis of the corpus luteum occurred abortion. In the past three years, our obstetrics and gynecology stopped taking premature pregnancies in about 30 30 pregnant women who had menopause within 50 days