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The Effect of Amniotic Fluid Index on the Accuracy of Sonographic Estimated Fetal Weight

Luther-Midelfort Women’s Health Ultrasound, Eau Claire, WI, durbin.sharon{at}mayo.edu

Connie W. Lee, EDD, ARNP, IBCLC

Luther-Midelfort Women’s Health Ultrasound, Eau Claire, WI, School of Nursing, Clemson University, Clemson, SC

Veronica G. Parker, PHD

Luther-Midelfort Women’s Health Ultrasound, Eau Claire, WI, School of Nursing, Clemson University, Clemson, SC

The objective of this study was to investigate whether there is a relationship between the amniotic fluid index (AFI) and the accuracy of the sonographic estimated fetal weight (EFW) as substantiated by the actual birth weight. This is a retrospective study where data of the sonographic estimated fetal weight and the birth weight at delivery were collected to calculate range of error when the amniotic fluid index was indicative of polyhydramnios or oligohydramnios, with normal amniotic fluid volumes as a control group. Results revealed significant, fairly strong to strong correlations between the variables within each group. Further analysis compared the mean scores of the three groups. Although differences in the mean values exist, large overlaps existed. This questions the usefulness of the correlation of the EFW and AFI in clinical use.

Key Words: amniotic fluid index • birth weight • estimated fetal weight • ultrasound estimated fetal weight • biparietal diameter • head circumference • abdominal circumference • femur length

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Journal of Diagnostic Medical Sonography, Vol. 21, No. 4, 329-335 (2005)
DOI: 10.1177/8756479305278267


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This Article Abstract Free Full Text (Free PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Durbin, S. A. Articles by Parker, V. G. Search for Related Content Social Bookmarking                         What's this?