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Sonographically homogeneous echogenic amniotic fluid in detecting meconium-stained amniotic fluid
D M Sherer1, J S Abramowicz, S A Smith
1Department of Obstetrics and Gynecology, Strong Memorial Hospital, Rochester, New York.
Obstetrics and Gynecology
|November 11, 1991
Summary
Sonographically homogeneous echogenic amniotic fluid (AF) was evaluated as a marker for meconium. While it showed high sensitivity, homogeneous echogenic AF does not reliably indicate meconium-stained AF.
Area of Science:
- Obstetrics and Gynecology
- Fetal Medicine
- Diagnostic Imaging
Background:
- Meconium-stained amniotic fluid (AF) is a concern in high-risk pregnancies.
- Identifying meconium prenatally can guide clinical management.
- Sonographic assessment of AF echogenicity is a non-invasive technique.
Purpose of the Study:
- To investigate whether sonographically homogeneous echogenic AF is a reliable marker for meconium-stained AF.
- To determine the diagnostic accuracy of homogeneous echogenic AF in detecting meconium.
Main Methods:
- A prospective study comparing 20 cases with homogeneous echogenic AF to 40 cases with clear AF.
- Sonographic assessment of AF echogenicity was performed.
- AF was analyzed for meconium presence at delivery or via amniocentesis.
Main Results:
- Homogeneous echogenic AF demonstrated 100% sensitivity and 69% specificity for detecting meconium.
- The positive predictive value was 10%, and the negative predictive value was 100% for meconium detection.
- Only 2 out of 20 cases with homogeneous echogenic AF actually had meconium.
Conclusions:
- Sonographically homogeneous echogenic AF is not a definitive marker for meconium-stained AF.
- The presence of homogeneous echogenic AF does not necessarily indicate meconium.
- Further investigation is needed to understand the causes and implications of homogeneous echogenic AF.