Maternity RN NCLEX Questions Related

Review Maternity RN NCLEX Questions related questions and content

The physician orders an amniocentesis for a primigravid client at 35 weeks' gestation in early labor to determine fetal lung maturity. Which of the following is an indicator of fetal lung maturity?

  • A. A amount of bilirubin present.
  • B. Presence of red blood cells.
  • C. Barr body determination.
  • D. Lecithin-sphingomyelin (L/S ratio).
Correct Answer: D

Rationale: The lecithin-sphingomyelin (L/S) ratio in amniotic fluid is a key indicator of fetal lung maturity, with a ratio of 2:1 or higher indicating mature lungs. Bilirubin, red blood cells, and Barr body determination are not used for this purpose.