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Correlation between fetal gastric size and amniotic fluid volume

✍ Scribed by Avi Ben-Haroush; Yariv Yogev; Yoav Peled; Jacob Bar; Moshe Hod; Josef Pardo

Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 126 KB
Volume: 33
Category: Article
ISSN: 0091-2751
DOI: 10.1002/jcu.20098

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Purpose

Since abnormal conditions of the fetal digestive tract may alter both amniotic fluid volume and fetal gastric volume, we sought to determine whether amniotic fluid volume is correlated with fetal gastric volume in normal pregnancy.

Methods

A total of 280 fetal gastric size measurements were made prospectively from routine sonographic examinations of women with normal singleton pregnancies between 16 and 42 weeks of gestation. The fetal stomach was defined as the largest area including the pyloric site on transverse or oblique real‐time sonographic scans. Gastric volume was calculated according to the formula for a prolate ellipsoid. The amniotic fluid index (AFI) was used for the evaluation of amniotic fluid volume.

Results

Both fetal gastric volume and AFI were significantly correlated with gestational age (R^2^ = 0.422 and R^2^ = 0.128, respectively). Only a weak correlation was found between gastric volume and AFI (R^2^ = 0.036, p < 0.001). On multivariate linear regression analysis adjusting for gestational age and fetal biometric measurements, gastric volume was not an independent and significant predictor of AFI.

Conclusions

Although sonographically determined fetal gastric volume measurements appear to be useful in the assessment of fetal digestive tract anomalies, fetal gastric volume has no clinically significant effect on the amniotic fluid volume in normal pregnancy. © 2005 Wiley Periodicals, Inc. J Clin Ultrasound 33:119–122, 2005

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