Evaluation of the effect of medical abortion

Medical abortion refers to the method of using drugs to terminate pregnancy. Currently, the commonly used drugs in clinical practice are mifepristone and misoprostol. The combination of the two has a better effect on preventing early pregnancy. However, it should be noted that the success rate of medical abortion is 90% to 95%, and its incomplete abortion and failure rate are higher than those of instrumental artificial abortion. Its effect evaluation criteria include the following aspects:

1. Complete miscarriage

After a woman takes the medicine, the gestational sac is naturally expelled, or although the gestational sac is not clearly seen to be expelled, B-ultrasound, blood or urine HCG (human chorionic gonadotropin) confirms that the woman has a complete abortion. When the patient's vaginal bleeding stops naturally and menstruation begins, it is a complete abortion.

2. Incomplete abortion

After taking the medicine, the fetal sac is not expelled, and B-ultrasound confirms that there are residues in the uterine cavity; or the fetal sac is expelled, but the patient has excessive vaginal bleeding for too long during follow-up, the blood or urine HCG is still positive, or there is excessive bleeding after the first menstrual cycle, etc., then another curettage is required. Incomplete abortion referred to by medical abortion is mostly: regardless of the reason for curettage after taking the medicine, whether there is chorionic placental tissue in the scrapings, it is an incomplete abortion, which is somewhat different from the incomplete abortion referred to by surgery.

3. Failed abortion

If no product of pregnancy is expelled within 8 days after medication, and B-ultrasound confirms the presence of a complete gestational sac or a fetal bud and fetal heartbeat in the uterine cavity, it is a failed abortion and requires re-application of negative pressure aspiration or other methods to terminate the pregnancy.