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The role of ultrasound assessment of amniotic fluid volume in the management of the postdate pregnancy

  • Jeffrey P. Phelan
    Correspondence
    Reprint requests: Jeffrey P. Phelan, M.D., Women's Hospital, 5K40, 1240 N. Mission Road, Los Angeles, CA 90033.
    Affiliations
    Department of Obstetrics and Gynecology, University of Southern California School of Medicine, Los Angeles, California, USA

    Women's Hospital, Los Angeles County/University of Southern California Medical Center, Los Angeles, California, USA.
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  • Lawrence D. Platt
    Affiliations
    Department of Obstetrics and Gynecology, University of Southern California School of Medicine, Los Angeles, California, USA

    Women's Hospital, Los Angeles County/University of Southern California Medical Center, Los Angeles, California, USA.
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  • Sze-Ya Yeh
    Affiliations
    Department of Obstetrics and Gynecology, University of Southern California School of Medicine, Los Angeles, California, USA

    Women's Hospital, Los Angeles County/University of Southern California Medical Center, Los Angeles, California, USA.
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  • Paula Broussard
    Affiliations
    Department of Obstetrics and Gynecology, University of Southern California School of Medicine, Los Angeles, California, USA

    Women's Hospital, Los Angeles County/University of Southern California Medical Center, Los Angeles, California, USA.
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  • Richard H. Paul
    Affiliations
    Department of Obstetrics and Gynecology, University of Southern California School of Medicine, Los Angeles, California, USA

    Women's Hospital, Los Angeles County/University of Southern California Medical Center, Los Angeles, California, USA.
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      Abstract

      Antepartum assessments of amniotic fluid volumes and their relationship to nonstress test patterns and pregnancy outcomes were retrospectively analyzed in 234 postdate pregnancies. The incidence of clinical oligohydramnios and a nonstress test revealing fetal heart rate deceleration or bradycardia was found to increase as the sonographic estimates of the amniotic fluid volume decreased. Furthermore, the postdate pregnancy with sonographic evidence of an adequate amniotic fluid volume had a significantly better perinatal outcome than the pregnancy without an adequate fluid volume. These results suggest that the postdate pregnancy with evidence of reduced amniotic fluid volume should be considered for a trial of labor with continuous electronic fetal monitoring.

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