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Amniotic fluid index in low-risk pregnancy as an admission test to the labor ward.

Ghosh, Gisela LU ; Marsal, Karel LU and Gudmundsson, Saemundur LU (2002) In Acta Obstetricia et Gynecologica Scandinavica 81(9). p.852-855
Abstract
Background. Oligohydramnios has been shown to be a predictor of intrapartal fetal distress. In a selected group of low-risk pregnancies, however, it has not yet been established that oligohydramnios contributes to intrapartal fetal distress.



Methods. Ultrasonically estimated four-quadrant amniotic fluid index as a test for admission to the labor ward was evaluated as a predictive factor for fetal distress during labor in a prospective 'blind' study comprising 600 low-risk pregnancies. Oligohydramnios was defined as an amniotic fluid index <= 50 mm. The parturients were divided into two groups according to the status of the fetal membranes. The amniotic fluid index results were correlated to fetal outcome: Apgar score... (More)
Background. Oligohydramnios has been shown to be a predictor of intrapartal fetal distress. In a selected group of low-risk pregnancies, however, it has not yet been established that oligohydramnios contributes to intrapartal fetal distress.



Methods. Ultrasonically estimated four-quadrant amniotic fluid index as a test for admission to the labor ward was evaluated as a predictive factor for fetal distress during labor in a prospective 'blind' study comprising 600 low-risk pregnancies. Oligohydramnios was defined as an amniotic fluid index <= 50 mm. The parturients were divided into two groups according to the status of the fetal membranes. The amniotic fluid index results were correlated to fetal outcome: Apgar score at 1 and 5 min, pH of blood in umbilical artery and vein, operative delivery because of fetal distress, cesarean delivery because of fetal distress, and number of babies referred to the neonatal intensive care unit.



Results. Two-hundred and sixty-seven women had ruptured membranes. Among these a significant increase in operative delivery because of fetal distress was seen in cases of oligohydramnios compared with the normal amount of amniotic fluid (odds ratio 3.86, confidence interval = 1.25-11.9). No significant differences were seen regarding other variables of perinatal outcome. The group with intact membranes comprised 333 parturients. Among these, no significant differences in perinatal outcome could be seen in relationship to the amniotic fluid index, although a 50% increase in emergency operations for fetal distress was seen in women with oligohydramnios. A significant correlation might have been evident even in that group if a larger sample had been studied.



Conclusion. The results indicate that measurement of the amniotic fluid index in low-risk pregnant women admitted for labor might identify parturients with an increased risk of intrapartal fetal distress. (Less)
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organization
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type
Contribution to journal
publication status
published
subject
keywords
Amniotic Fluid, Support, Pregnancy, Oligohydramnios: complications, Prenatal, Obstetric, Non-U.S. Gov't, Ultrasonography, Female, Fetal Distress: diagnosis, Fetal Distress: etiology, Human, Labor
in
Acta Obstetricia et Gynecologica Scandinavica
volume
81
issue
9
pages
852 - 855
publisher
Wiley-Blackwell
external identifiers
  • wos:000177965700009
  • pmid:12225301
  • scopus:0036715437
ISSN
1600-0412
DOI
10.1034/j.1600-0412.2002.810909.x
language
English
LU publication?
yes
id
8ad698b2-a5bc-4794-8a8c-38deec6282ae (old id 114881)
date added to LUP
2007-07-18 08:27:44
date last changed
2017-09-24 04:19:41
@article{8ad698b2-a5bc-4794-8a8c-38deec6282ae,
  abstract     = {Background. Oligohydramnios has been shown to be a predictor of intrapartal fetal distress. In a selected group of low-risk pregnancies, however, it has not yet been established that oligohydramnios contributes to intrapartal fetal distress.<br/><br>
<br/><br>
Methods. Ultrasonically estimated four-quadrant amniotic fluid index as a test for admission to the labor ward was evaluated as a predictive factor for fetal distress during labor in a prospective 'blind' study comprising 600 low-risk pregnancies. Oligohydramnios was defined as an amniotic fluid index &lt;= 50 mm. The parturients were divided into two groups according to the status of the fetal membranes. The amniotic fluid index results were correlated to fetal outcome: Apgar score at 1 and 5 min, pH of blood in umbilical artery and vein, operative delivery because of fetal distress, cesarean delivery because of fetal distress, and number of babies referred to the neonatal intensive care unit.<br/><br>
<br/><br>
Results. Two-hundred and sixty-seven women had ruptured membranes. Among these a significant increase in operative delivery because of fetal distress was seen in cases of oligohydramnios compared with the normal amount of amniotic fluid (odds ratio 3.86, confidence interval = 1.25-11.9). No significant differences were seen regarding other variables of perinatal outcome. The group with intact membranes comprised 333 parturients. Among these, no significant differences in perinatal outcome could be seen in relationship to the amniotic fluid index, although a 50% increase in emergency operations for fetal distress was seen in women with oligohydramnios. A significant correlation might have been evident even in that group if a larger sample had been studied.<br/><br>
<br/><br>
Conclusion. The results indicate that measurement of the amniotic fluid index in low-risk pregnant women admitted for labor might identify parturients with an increased risk of intrapartal fetal distress.},
  author       = {Ghosh, Gisela and Marsal, Karel and Gudmundsson, Saemundur},
  issn         = {1600-0412},
  keyword      = {Amniotic Fluid,Support,Pregnancy,Oligohydramnios: complications,Prenatal,Obstetric,Non-U.S. Gov't,Ultrasonography,Female,Fetal Distress: diagnosis,Fetal Distress: etiology,Human,Labor},
  language     = {eng},
  number       = {9},
  pages        = {852--855},
  publisher    = {Wiley-Blackwell},
  series       = {Acta Obstetricia et Gynecologica Scandinavica},
  title        = {Amniotic fluid index in low-risk pregnancy as an admission test to the labor ward.},
  url          = {http://dx.doi.org/10.1034/j.1600-0412.2002.810909.x},
  volume       = {81},
  year         = {2002},
}