HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Magann, E. F. Articles by Martin, J. N. Search for Related Content PubMed PubMed Citation Articles by Magann, E. F. Articles by Martin, J. N., Jr

AMNIOTIC FLUID VOLUME ESTIMATION AND THE BIOPHYSICAL PROFILE: A CONFUSION OF CRITERIA

From the Department of Obstetrics and Gynecology, University of Mississippi Medical Center, Jackson, Mississippi.

The biophysical profile (BPP) can be used as an initial test of fetal health and as a secondary back-up assessment of fetuses at risk of adverse outcomes when preliminary evaluations are not reassuring. The BPP evaluates five characteristics: fetal movement, tone, breathing, heart reactivity, and amniotic fluid (AF) volume estimation. Three of the most frequently used obstetric textbooks define adequate AF volume differently. In two of the three, the stated method of evaluating AF volume differs from that actually used by the referenced authors. We reviewed articles by Manning and found that his methodology changed from a 1-cm pocket in one plane to a 1-cm pocket in two perpendicular planes, and finally to a 2-cm vertical pocket with a 1-cm horizontal measurement. The 2 x 2-cm pocket is a fourth methodology that has been introduced recently. It is not known how often and in which groups each of the four methods has been used to evaluate abnormal AF volumes. The relevance and importance of determining precisely the ultrasound measurement actually used for investigations are emphasized by looking at women with AF indices 5. Fifty-three percent of those women had a 2 x 2 pocket, 72% had a 2 x 1 pocket, and 95% had a 1 x 1 pocket. The diagnosis of low fluid can lead to additional testing, hydration, and intervention, so the importance of a universal definition linked with pregnancy outcomes cannot be overemphasized.