Abstract
Seven patients with acute preeclampsia ans six with superimposed preeclampsia were infused intravenously with incremental doses of prostacyclin (up to 8 ng/min/kg during 80 minutes). Prostacyclin infusion was accompanied by significant decreases in maternal blood pressure and consistent rises in maternal plasma or urinary 6-keto-prostaglandin F1α, but it caused no changes in maternal or fetal pulse rate or uterine contractility. Moreover, prostacyclin did not change the placental and umbilical blood flow, which were measured before and at the end of infusion. All women experienced facial flushing and two complained of headache during infusion. There was no difference in prostacyclin effects between women with acute or superimposed preeclampsia. These results may be taken as evidence that intravenous prostacyclin is not a specific therapy to increase placental or umbilical blood flow in preeclampsia.
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