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  • Title: Amniotic fluid volume and composition following experimental manipulations in sheep.
    Author: Lingwood BE, Hardy KJ, Long JG, McPhee M, Wintour EM.
    Journal: Obstet Gynecol; 1980 Oct; 56(4):451-8. PubMed ID: 6775256.
    Abstract:
    Twenty to thirty percent of amniotic fluid volume was replaced by isotonic solutions of saline, mannitol, or dextrose in chronically cannulated ovine fetuses. In all cases the sodium, potassium, and chloride concentrations returned to control values in 3 to 6 hours. Urea and creatinine behaved similarly in the saline and mannitol experiments, but rose above control values within 1 hour of dextrose replacement. Amniotic fluid volume increased with return of solute. Fetal urine drainage to the exterior abolished the rapid return of urea and creatinine concentrations in the dextrose experiments, although no changes in renal function occurred in any experiments. It was concluded that dextrose inhibited the exit of urea and creatinine from the amniotic compartment.
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