Related Experiment Videos
Standardized measurement of amniotic fluid volume by correlation of sonography with dye dilution technique
E Schiff1, G Ben-Baruch, O Kushnir
1Department of Obstetrics and Gynecology, Chaim Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Israel.
Abstract:
Amniotic fluid volume was measured in two ways in 23 subjects admitted for interruption of pregnancy at gestational ages 16-24 weeks. The amniotic fluid volume calculated from sonographic measurements was plotted against the "true" amniotic fluid volume obtained by a dye dilution technique. Linear regression analysis showed a good correlation between the two methods (r = 0.815; P less than .001) and yielded a factor that may be used on a general basis to derive the true amniotic fluid volume from the value obtained by sonography. This approach thus offers a standardized procedure for amniotic fluid volume estimation in the second trimester based on the technical simplicity of ultrasonography with the relative accuracy of the dye dilution technique.