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
Chorioamnionitis is an infection of the membranes containing the fetus and the amniotic fluid.It can occur when the membranes rupture before labor, especially if the rupture is prolonged or preterm.Chorioamnionitis can cause fever, foul-smelling vaginal discharge, abdominal pain, and fetal tachycardia.
Normal ranges for temperature are 36.5°C to 37.5°C (97.7°F to 99.5°F) and for fetal heart rate are 110 to 160 beats per minute.
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