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Ultrasound assessment of amniotic fluid volume: a comparison of the single deepest pool and amniotic fluid index to predict perinatal morbidity.
- Source :
-
Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology [Ultrasound Obstet Gynecol] 1991 Nov 01; Vol. 1 (6), pp. 401-4. - Publication Year :
- 1991
-
Abstract
- The ability of the amniotic fluid index and the single deepest pool to predict perinatal morbidity was compared in 291 high-risk singleton pregnancies without ruptured membranes or fetal renal abnormalities. A poor outcome was defined as a birth weight < -2 standard deviations, emergency Cesarean section for fetal heart rate abnormalities in labor, 5-minute Apgar score < 7, umbilical venous pH at delivery < 7.15 and admission to the special care baby unit. At least one of these parameters occurred in 71 (24%) of the 291 pregnancies. Oligohydramnios (an amniotic fluid index <or= 5 cm) occurred in 19 (6.5%) of the 291 pregnancies; this group was more likely to have a poor outcome than those with an amniotic fluid index > 5 cm (chi(2) = 2.41, p = 0.02). There was a significant correlation between amniotic fluid index and single deepest pool measurements (r = 0.83, n = 291, p < 0.0001). At the recommended cut-off values, the single deepest pool and the amniotic fluid index had sensitivities of 7% and 13%, respectively and specificities of 96% and 95% for predicting perinatal morbidity. Receiver operating characteristic curve analysis showed that these poor results were not the result of the cut-off values chosen and that the performances of the amniotic fluid index and single deepest pool were similar.<br /> (Copyright 1991 International Society of Ultrasound in Obstetrics and Gynecology)
Details
- Language :
- English
- ISSN :
- 0960-7692
- Volume :
- 1
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology
- Publication Type :
- Academic Journal
- Accession number :
- 12797022
- Full Text :
- https://doi.org/10.1046/j.1469-0705.1991.01060401.x