Two grams of moxalactam was given intravenously to 28 women at high risk for infection following cesarean delivery. After a mean time of 48 minutes from infusion, maternal sera, cord sera, and uterine tissue obtained at delivery had concentrations of moxalactam of 62 μg/ml, 22.2 μg/ml, and 9.6 μg/gm, respectively. The maternal serum half-time was calculated to be 2.1 hours. R and S epimeric distribution was determined in these sera and tissues, and the mean R S ratios were 0.95, 0.93, and 1.22 for the three groups, respectively. The significance of these observations is discussed. A new method in which a high-pressure liquid chromatographic assay is used is described, and results are compared to those obtained with the microbiological assay. The high-pressure liquid chromatographic method was found to be quick, accurate, and reproducible.
ASJC Scopus subject areas
- Obstetrics and Gynecology