Maternal Newborn NCLEX questions Review Questions and Correct Answers
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Course
Maternal Newborn Nursing
Institution
Maternal Newborn Nursing
A prenatal client at 35 weeks' gestation is scheduled for an amniocentesis to
determine fetal lung maturity. The nurse expects the lecithin/sphingomyelin
(L/S) ratio to be:
a. 1:1.
b. 3:1.
c. 2:1.
d. 0.5:1.
Davidson/
Answer: Answer: C
2:1.
Rationale: Early in pregnancy, the sphingomyeli...
Maternal Newborn NCLEX questions Review Questions and Correct Answers A prenatal client at 35 weeks' gestat ion is scheduled for an amniocentesis to determine fetal lung maturity. The nurse expects the lecithin/sphingomyelin (L/S) ratio to be: a. 1:1. b. 3:1. c. 2:1. d. 0.5:1. Davidson/ Answer: Answer: C 2:1. Rationale: Early in pregnancy, the sphingomyelin concentration in amniotic fluid is greater than the concentration of lecithin, and so the L/S ratio is low. (Lecithin levels are low and sphingomyelin levels are high.) At about 32 weeks' gestation, sphingom yelin levels begin to fall and the amount of lecithin begins to increase. By 35 weeks' gestation, an L/S ratio of 2:1 (also reported as 2.0) is usually achieved in the normal fetus. A prenatal client in her second trimester is admitted to the maternity un it with painless, bright red vaginal bleeding. What test might the physician order? a. Ultrasound. b. Alpha -fetoprotein (AFP). c. Contraction stress test (CST). d. Amniocentesis. Answer: Answer: A
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