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  • Title: Prophylactic amnioinfusion in pregnancies complicated by oligohydramnios: a prospective study.
    Author: Nageotte MP, Bertucci L, Towers CV, Lagrew DL, Modanlou H.
    Journal: Obstet Gynecol; 1991 May; 77(5):677-80. PubMed ID: 2014078.
    Abstract:
    Prophylactic amnioinfusion was assessed in term and post-dates pregnancies with decreased amniotic fluid volume. Subjects were randomly assigned to one of three groups: amnioinfusion with warmed saline solution, room-temperature saline, or control. Patients receiving prophylactic amnioinfusion had a significant decrease in both the frequency and severity of variable decelerations in the first stage of labor (P = .006) and in the average total number of variable decelerations in the first and second stages of labor (P = .01) compared with controls. There was no observed effect on newborn serum electrolyte levels with amnioinfusion, nor was there any apparent benefit of infusion of warmed saline compared with room-temperature saline. In contrast to premature gestations with oligohydramnios, prophylactic amnioinfusion was not associated with a significant improvement in mean umbilical arterial and venous pH or a significant decrease in cesarean delivery for fetal distress (P = .09). This is perhaps because the term fetus has an enhanced ability to tolerate recurrent episodes of heart rate decelerations without demonstrating the rapid metabolic changes seen in the premature fetus.
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