COMPARISON OF AMNIOTIC FLUID OPTICAL DENSITY AND FOAM STABILITY TEST IN PREDICTING FETAL LUNG MATURITY

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Abstract
Ability of optical density measurements and the foam stability test to predict L/S [lecithin/sphingomyelin] ratio of [human] amniotic fluid (AF) was examined. Optical density measurements and the foam test predicted L/S ratio with a similar degree of accuracy; neither was able to replace biochemical measurement of the L/S ratio because both gave false negative and false positive predictions. Optical density measurements and the foam test did not combine to increase accuracy of prediction.

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