A comparison of 3 criteria of oligohydramnios in identifying peripartum complications: a secondary analysis

作者：Johnson Julie M^*; Chauhan Suneet P; Ennen Christopher S; Niederhauser Amy; Magann Everett F

来源：American Journal of Obstetrics and Gynecology, 2007, 197(2): e8.

DOI：10.1016/j.ajog.2007.04.048

• amniotic fluid index
• oligohydramnios
• umbilical arterial pH less than 7.00

OBJECTIVE: The objective of the study was to ascertain the diagnostic accuracy of 3 criteria of oligohydramnios in identifying 4 peripartum complications.
STUDY DESIGN: The 3 definitions of oligohydramnios were amniotic fluid index (AFI) 5.0 cm or less and AFI < 5% for gestational age (GA) using nomograms by Moore and Cayle or Magann et al. Likelihood ratio (LR) and guidelines by the Evidence-Based Medicine Working Group were used in the secondary analysis of previously published reports. AFI obtained during antepartum and intrapartum periods were analyzed separately.
RESULTS: The 95% confidence intervals for the prevalence of oligohydramnios using the 3 criteria are significantly different in the antepartum or intrapartum analysis. The LR was < 6 for ante-and intrapartum AFI to identify cesarean delivery for nonreassuring fetal heart rate tracing, Apgar score 3 or less at 5 minutes, umbilical arterial pH < 7.00, and newborns' weight 5% or less for GA.
CONCLUSION: The 3 criteria for determining the adequacy of amniotic fluid are not fungible, and they are not useful diagnostic tests for identifying peripartum complications because LR is < 10.

• 出版日期2007-8