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Related Experiment Videos

Amniotic fluid volume in normal singleton pregnancies

E F Magann1, J D Bass, S P Chauhan

  • 1Department of Obstetrics and Gynecology, University of Mississippi Medical Center, Jackson, USA.

Obstetrics and Gynecology
|November 5, 1997
PubMed
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Amniotic fluid volume in normal singleton pregnancies increases significantly with gestational age, nearly doubling after 30 weeks and peaking near term. This finding contrasts with previous reports suggesting an earlier peak.

Area of Science:

  • Obstetrics and Gynecology
  • Fetal Medicine
  • Reproductive Biology

Background:

  • Amniotic fluid volume is crucial for fetal development and well-being.
  • Previous studies suggested maximal amniotic fluid volume occurs in the early third trimester.

Purpose of the Study:

  • To evaluate amniotic fluid (AF) volume in normal singleton pregnancies.
  • To determine the relationship between AF volume and gestational age from 15 to 40 weeks.

Main Methods:

  • Prospective study of 144 normal singleton pregnancies.
  • AF volume measured using a dye dilution technique.
  • Nonlinear regression analysis to assess AF volume and gestational age.

Main Results:

Related Experiment Videos

  • Significant increase in AF volume with advancing gestational age (P < .01).
  • AF volume nearly doubled after 30 weeks' gestation.
  • Growth curve modeling indicated AF volume increases until 40 weeks' gestation.

    • Conclusions:

    • Maximal amniotic fluid volume is attained near term in singleton gestations.
    • This observation contrasts with prior research indicating an earlier peak in the third trimester.