药物流产（简称“药流”）后出血异常是指用米非司酮配伍前列腺素终止早孕后，阴道出血时间过长或出血量过多。米非司酮是一种作用于受体水平的抗孕酮药物［１］，它能取代体内孕酮与孕酮受体结合，从而抑制孕酮活性，引起蜕膜和绒毛变性，并软化宫颈［２］，在此基础上配... Medical abortion (referred to as “drug flow”) after the abnormal bleeding refers to the termination of early pregnancy with mifepristone and prostaglandin, vaginal bleeding time or excessive bleeding. Mifepristone is an antiprogestin agent that acts at the receptor level [1], which replaces the combination of progesterone and progesterone receptors in the body, thereby inhibiting progesterone activity, causing decidual and villous degeneration, and softening the cervix [2], on this basis with ...