PIP: The authors studied plasma HCS, estradiol (E2), progesterone (P), testosterone (T), and androgen (A) changes in 8 cases of therapeutic abortion by intraamniotic injection of prostaglandin F2 alpha (PGF2alpha). During abortion, the mean plasma concentrations of A and T did not change considerably, while mean plasma concentrations of HCS, E2, and P showed a progressive fall correlated to PGF2alpha dosages used to induce abortion. During the induction of abortion, monitoring by ultrasound showed no correlation between fetal movements, fetal distress, and fetal death. (author's modified)