Do Multiple Measurements Employing Different Ultrasonic Techniques Improve the Accuracy of Amniotic Fluid Volume Assessment? |
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Authors: | Everett F. Magann MD Suneet P. Chauhan MD Neil S. Whitworth PhD Jack H. Klausen MD rew K. Saltzman MD John C. Morrison MD |
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Affiliation: | Department of Obstetrics and Gynecology, University of Mississippi Medical Center, Jackson, Mississippi, United States of America |
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Abstract: | Summary: This investigation was undertaken to determine if the accuracy of the ultrasound assessment of abnormal amniotic fluid volume (oligohydramnios or poly-hydramnios) is improved by employing multiple sonographic amniotic fluid measurements. Four ultrasound techniques consisting of the subjective assessment (ultrasonic visualization without measurement), largest vertical pocket, amniotic fluid index and 2-diameter pocket technique were performed followed by amniocentesis and dye-dilution confirmation of amniotic fluid volume in 66 singleton pregnancies. The ultrasound accuracy to detect abnormal amniotic fluid volume ranged from 61% with the largest vertical pocket to 70% with the 2-diameter pocket procedure used separately. Receiver operator characteristic curves demonstrated that combining the 4 ultrasonic measurements did not improve the accuracy of identifying amniotic fluid volumes. |
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