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近年来使用药物终止早期妊娠发展迅速,已成为终止妊娠不可缺少的重要手段。大家都希望有一种不动手术、安全、有效终止妊娠的方法。多年来,国内外专家研究使用米非司酮药物终止妊娠。它的原理是早期妊娠时,胚胎主要孕酮来维持营养和生长发育。米非司酮主要起到对抗孕酮的作用,使孕酮失去活性后子宫蜕膜坏死变性甚至出血,以致于胚胎停止发育,有效地终止妊娠,但不能引起足够的子宫收缩来排出妊娠产物(胎囊、绒毛和蜕膜),但它能增强子宫矶层对前列腺素的敏感性,
In recent years, the use of drugs to terminate the rapid development of early pregnancy, pregnancy has become an indispensable means of termination. We all hope there is a non-surgical, safe and effective termination of pregnancy method. Over the years, domestic and foreign experts to study the use of mifepristone termination of pregnancy. Its principle is that during early pregnancy, the embryo’s main progesterone maintains its nutrition and growth. Mifepristone mainly played the role of progesterone, progesterone loss of activity after decidual necrosis of the uterine degeneration or bleeding, resulting in the development of the embryo to stop, effectively terminate the pregnancy, but can not cause enough uterine contraction to discharge the pregnant product Fetal sac, villi and decidua), but it can enhance the sensitivity of the uterine layer to prostaglandin,