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  Umbilical Artery Doppler Reference Ranges

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     Gestational Age in Weeks   

    50th percentile 95th percentile
    S/D ratio =
    Resistance index =
    Pulsatility index =

    Acharya G et al. Reference ranges for serial measurements of umbilical artery Doppler indices in the second half of pregnancy.Am J Obstet Gynecol.2005;192:937-44. PUBMED

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    Created: 12/18/2000
    Last update: 1/2/2003