If it has already been determined that the embryo has ceased to develop and significant vaginal bleeding has occurred, it is likely that the bleeding is caused by uterine contractions stimulated by the halted embryonic development. In this case, it is first necessary to seek medical attention promptly. After confirming the halted development of the embryo, it is important to perform a surgical abortion promptly to completely remove all tissues associated with the ceased embryonic development, reducing the occurrence of post-abortion bleeding. After the surgery, it is also necessary to promptly use antibiotics to prevent infections within the uterine cavity.