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  • Title: Changes in estrogen levels in maternal venous plasma after intra-amniotic infusion of prostaglandin F2 for therapeutic abortion.
    Author: Shutt DA, Smith ID, Shearman RP.
    Journal: Prostaglandins; 1973 Aug; 4(2):291-9. PubMed ID: 4729615.
    Abstract:
    Peripheral plasma levels of estrone, estradiol-17beta and estriol were measured by the method of Shutt and Cox in 10 women following intra-amniotic infusion of prostaglandin F2alpha (PGF2a) for therapeutic abortion. Initial dose was 30 mg, followed if necessary, by doses of 15 mg at 24 hours and 42 hours. Gestational age of pregnancies ranged from 14 to 19 weeks, with a mean of 16 weeks. All 10 women completely aborted. Mean induction-abortion interval was 24 + or - 12 hours. The mean estrone, estradiol 17beta and estriol levels declined to about half of the pre-infusion levels after 80% of the induction-abortion interval had elapsed. The main decline in estrogen levels occurred in individual women either during the 1st quarter or during the last quarter of the induction-abortion interval. There were no significant relationships between changes in estrogen levels and the interval from 1st administration of PGF2a to subsequent abortion.
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