In this case, HCG is first performed to rule out the possibility of trophoblast-related disease of pregnancy. Due to the long duration of bleeding after a medical abortion, thereafter an ultrasound examination is performed to find out if there are other abnormal echoes in the uterine cavity, and eventually a hysteroscopy is performed to find out if there are abnormal echoes or corresponding residues in the uterine cavity. Because of the long duration of the abortion, if there is residue, it is best to perform a hysteroscopic electrodesiccation to remove the residue at this time, as the tissue has become mechanized and has become more densely adherent to the uterine wall. It is also possible that post-abortion uterine adhesions may have occurred at this time, and if adhesions are found, they need to be separated in a timely manner.