Mock NCLEX RN Exam Related

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An obstetrical client with diabetes has an amniocentesis at 28 weeks gestation. Which test indicates the degree of fetal lung maturity?

  • A. Alpha-fetoprotein
  • B. Estriol level
  • C. Indirect Coombs
  • D. Lecithin sphingomyelin ratio
Correct Answer: D

Rationale: The lecithin-sphingomyelin (L/S) ratio measures fetal lung maturity by assessing surfactant production, critical for preventing respiratory distress syndrome in preterm infants.