Pregnancy outcomes after antepartum diagnosis of oligohydramnios at or beyond 34 weeks' gestation

Brian M. Casey, Donald D. McIntire, Steven L. Bloom, Michael J. Lucas, Rigoberto Santos, Diane M. Twickler, Ronald M. Ramus, Kenneth J. Leveno

Research output: Contribution to journalArticlepeer-review

85 Scopus citations


OBJECTIVE: Our purpose was to assess whether antepartum oligohydramnios is associated with adverse perinatal outcomes. STUDY DESIGN: Women delivered between July 1, 1991, and September 30, 1996, who underwent ultrasonography at ≥34 weeks' gestation were analyzed. Oligohydramnios was defined as an amniotic fluid index ≤50 mm. Perinatal outcomes in pregnancies with oligohydramnios were compared with those with an amniotic fluid index of >50 mm. RESULTS: In our analysis of 6423 pregnancies, 147 (2.3%) were complicated by oligohydramnios. This complication was associated with increased labor induction (42% vs 18%; P < .001), stillbirth (1.4% vs 0.3%; P < .03), nonreassuring fetal heart rate (48% vs 39%; P < .03), admission to the neonatal intensive care nursery (7% vs 2%; P< .001), meconium aspiration syndrome (1% vs 0.1%; P< .001), and neonatal death (5% vs 0.3%; P < .001). CONCLUSION: Antepartum oligohydramnios is associated with increased perinatal morbidity and mortality.

Original languageEnglish (US)
Pages (from-to)909-912
Number of pages4
JournalAmerican journal of obstetrics and gynecology
Issue number4
StatePublished - Apr 2000


  • Amniotic fluid index
  • Oligohydramnios
  • Perinatal outcome

ASJC Scopus subject areas

  • Obstetrics and Gynecology


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