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Related Experiment Videos

Vaginal lactobacilli and preterm birth.

Rie Usui1, Akihide Ohkuchi, Shigeki Matsubara

  • 1Department of Obstetrics and Gynecology, Jichi Medical School, Tochigi.

Journal of Perinatal Medicine
|January 18, 2003
PubMed
Summary

The absence of vaginal lactobacilli is linked to an increased risk of preterm birth before 33 weeks of gestation. Testing for lactobacilli may help identify high-risk pregnancies early.

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Area of Science:

  • Reproductive Health
  • Microbiology
  • Obstetrics

Background:

  • Vaginal microbiota plays a crucial role in pregnancy outcomes.
  • Lactobacilli are key commensal bacteria in a healthy vaginal environment.
  • Preterm birth remains a significant concern in maternal and child health.

Purpose of the Study:

  • To investigate the association between the absence of vaginal lactobacilli and preterm birth.
  • To identify vaginal microorganisms as potential risk factors for delivery before 33 weeks of gestation.

Main Methods:

  • Prospective study of vaginal flora in 1958 pregnant women during the second trimester.
  • Multivariate-logistic regression analysis to assess microbial contributions to preterm delivery.
  • Analysis of lactobacilli, Mycoplasma hominis, and glucose non-fermentative gram-negative rods.

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Main Results:

  • Lactobacillus species were absent in 28% of women delivering before 33 weeks.
  • Absence of lactobacilli was an independent risk factor for preterm delivery (< 33 weeks) (OR 0.15).
  • Absence of lactobacilli demonstrated higher sensitivity (28%) and positive predictive value (25%) for preterm birth compared to other identified risk factors.

Conclusions:

  • The absence of vaginal lactobacilli is a significant predictor of preterm birth before 33 weeks.
  • Vaginal lactobacilli testing may serve as a valuable clinical tool for risk assessment in pregnancy.
  • Further research is warranted to confirm these findings in a cohort study setting.