Procedure
Instillation abortion is performed by injecting a chemical solution consisting of either saline, urea, or prostaglandin through the abdomen and into the amniotic sac. The cervix is dilated prior to the injection, and the chemical solution induces uterine contractions which expel the fetus. Sometimes a dilation and curettage procedure is necessary to remove any remaining tissue.
Instillation methods can require hospitalization for 12 to 48 hours. In one study, when laminaria were used to dilate the cervix overnight, the time between injection and completion was reduced from 29 to 14 hours.
Read more about this topic: Instillation Abortion