AUBF 311 -AMNIOTIC FLUID PART 2 QUESTIONS & ANSWERS

AUBF 311 -AMNIOTIC FLUID PART 2 QUESTIONS & ANSWERS LECITHIN-SPHINGOMYELIN RATIO - ANS-The reference method to which tests of FLM are compared is the LECITHIN - ANS-is the primary component of the surfactants (phospholipids, neutral lipids, and proteins) that make up the alveolar lining and account for alveolar stability. SPINGOMYELIN - ANS-is a lipid that is produced at a constant rate after about 26 weeks' gestation; therefore, it can serve as a control on which to base the rise in lecithin. 1.6 - ANS-Before 35 weeks' gestation, the L/S ratio is usually less than ______ because large amounts of lecithin are not being produced at this time. 2.0 - ANS-After 35 weeks' gestation, the lecithin concentration increases while the sphingomyelin concentration remains constant. The L/S ratio will rise to ______ or higher as the lecithin production increases to prevent alveolar collapse. PHOSPHATIDYL GLYCEROL - ANS-is also essential for adequate lung maturity and can be detected after 35 weeks' gestation