A nurse is reviewing the laboratory results of a client who has PPROM at 30 weeks of gestation.
The nurse should expect to see which of the following values for the lecithin/sphingomyelin (L/S) ratio in the amniotic fluid?
0.5
1.0
1.5
2.0
The Correct Answer is D
This value indicates a mature lecithin/sphingomyelin (L/S) ratio in the amniotic fluid, which reflects the fetal lung maturity and the low risk of respiratory distress syndrome (RDS) after birth. The L/S ratio is a test that measures the amount of lecithin and sphingomyelin, two types of phospholipids that are important for the formation of surfactant, a substance that prevents the lungs from collapsing. Lecithin increases and sphingomyelin stays constant as the fetus matures, so a higher L/S ratio indicates more surfactant and more lung development. A ratio of greater than 2:1 or 2.5:1 is 98% predictive of fetal lung maturity in most assays.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Drinking at least 2 L of fluids daily can help prevent dehydration and infection, which are possible complications of PROM (premature rupture of membranes).
Fluid intake also helps maintain amniotic fluid volume and fetal well-being.
Correct Answer is B
Explanation
Increased amniotic fluid index indicates a positive outcome of antibiotic therapy for a client who has PPROM at 28 weeks of gestation.Antibiotics are used to prevent or treat infection and prolong pregnancy in women with PPROM.Infection can cause oligohydramnios (low amniotic fluid) which can lead to fetal complications such as cord compression, pulmonary hypoplasia and limb deformities.
Therefore, an increased amniotic fluid index suggests that the infection has been reduced or resolved and the risk of preterm birth has been lowered.
Normal ranges for amniotic fluid index are 5 to 25 cm.Normal ranges for maternal pulse rate are 60 to 100 beats per minute.Normal ranges for maternal leukocyte count are 4.5 to 11 x 10^9/L.
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