How is retained tissue expelled after a painless abortion?

Pain-free abortion refers to a surgical procedure performed during early pregnancy under anesthesia, in which embryonic tissue and fetal material are removed from the uterus using specialized instruments—either by suction or gentle scraping.

In cases of incomplete uterine evacuation following induced abortion, the retained tissue may be managed via the following approaches:

1. Medical management: When only small amounts of residual tissue remain, medications that promote blood circulation, resolve stasis, and enhance uterine contraction—such as Leonurus japonicus granules or Xinshenghua granules—may be prescribed appropriately.

2. Surgical management: If substantial residual tissue is present, prompt uterine evacuation (dilation and curettage, D&C) is required. After anesthesia takes effect, routine disinfection of the external genitalia, vagina, and cervix is performed. A vaginal speculum is then inserted, and under ultrasonographic guidance, a probe is used to assess uterine cavity dimensions. Following cervical dilation with dilators, suction aspiration is performed via a vacuum aspiration cannula to remove intrauterine embryonic tissue.
Additionally, after an abortion, it is essential to maintain perineal hygiene and abstain from sexual intercourse for one month.