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Quantitative bacteriological analysis of amniotic fluid.

R J Courcol, M Roussel-Delvallez, F Puech

    Biology of the Neonate
    |January 1, 1982
    PubMed
    Summary
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    Quantitative analysis of amniotic fluid (AF) bacteria reveals high infection rates in at-risk mothers. Elevated bacterial counts correlate with clinical findings, indicating infection risk for neonates.

    Area of Science:

    • Obstetrics and Gynecology
    • Neonatal Medicine
    • Clinical Microbiology

    Background:

    • Intrauterine infections pose significant risks to both mother and neonate.
    • Early detection of amniotic fluid infection is crucial for timely intervention.
    • Bacteriological analysis of amniotic fluid is a key diagnostic method.

    Purpose of the Study:

    • To quantitatively assess bacterial presence in amniotic fluid of labor patients at high risk for infection.
    • To correlate bacterial colony counts with clinical manifestations of infection in neonates.
    • To evaluate the utility of quantitative amniotic fluid bacterial analysis in assessing neonatal infection risk.

    Main Methods:

    • Quantitative bacteriological analysis of 60 amniotic fluid samples from 50 labor patients.

    Related Experiment Videos

  • Bacterial colony counts determined using colony-forming units (CFU) per milliliter.
  • Correlation analysis between bacterial counts and clinical data.

    • Main Results:

    • Amniotic fluid cultures were positive in 52 out of 60 samples (86.7%).
    • Bacterial colony counts ranged from <10(2) to 10(9) CFU/ml.
    • Pathogenic bacteria (Group B Streptococcus, E. coli, Listeria) associated with clinical findings had counts ≥10(7) CFU/ml.
    • Excellent correlation (p < 0.00006) observed between bacterial counts and clinical data.

    Conclusions:

    • Quantitative bacterial analysis of amniotic fluid is a valuable tool for infection risk assessment in neonates.
    • High bacterial loads in amniotic fluid are strongly associated with clinical signs of infection.
    • This method aids in identifying neonates requiring prompt medical attention for potential sepsis.