A nurse is assisting in the care of a client who is scheduled for a cesarean birth based on the fetal lungs having reached maturity. Which of the following findings indicates that the fetal lungs are mature?
Phosphatidylglycerol (PG) absent
Nonstress test is reactive
Lecithin/sphingomyelin (L/S) ratio of 2:1
Biophysical profile score of 8
The Correct Answer is C
Choice A rationale: The presence of phosphatidylglycerol (PG) in the amniotic fluid is another indicator of fetal lung maturity. The absence of PG is associated with an increased risk of respiratory distress syndrome (RDS) in the newborn.
Choice B rationale: A nonstress test is a test performed during pregnancy to evaluate the fetal heart rate in response to fetal movement. It is not directly related to assessing fetal lung maturity.
Choice C rationale: The L/S ratio is an important indicator of fetal lung maturity. Lecithin and sphingomyelin are two surfactants present in the lungs, and the ratio of these two substances increases as the fetal lungs mature. An L/S ratio of 2:1 or greater is considered an indication of lung maturity and suggests that the newborn should be able to breathe adequately after birth.
Choice D rationale: The biophysical profile (BPP) is a prenatal ultrasound assessment of the fetus, which includes evaluating fetal movements, breathing, heart rate, and amniotic fluid volume. While a BPP of 8 is a reassuring score, it does not provide direct information about fetal lung maturity.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale: During phototherapy, it is essential to maintain adequate hydration and nutrition for the newborn. Encouraging frequent breastfeeding helps provide the baby with essential nutrients and fluids, which can be lost due to increased stooling caused by phototherapy.
Choice B rationale: The use of lotion on the newborn's skin during phototherapy is not recommended, as it may interfere with the effectiveness of the light therapy. The skin needs to be exposed to the light for the treatment to work.
Choice C rationale: Monitoring the newborn's blood glucose level is not directly related to phototherapy. Blood glucose monitoring may be necessary for specific medical reasons, but it is not a standard intervention during phototherapy.
Choice D rationale: During phototherapy, the newborn is usually placed in a supine (face-up) position to ensure maximum exposure of the skin to the phototherapy lights. The prone position is not recommended during phototherapy as it may reduce the effectiveness of the treatment.
Correct Answer is B
Explanation
Choice A rationale:
Broccoli is not a reliable source of Vitamin B12. It is a good source of other nutrients like Vitamin C and fiber.
Choice B rationale:
Skim milk is a reliable source of Vitamin B12 and is often fortified with this essential vitamin.
Choice C rationale:
Figs are not a reliable source of Vitamin B12. They are a good source of fiber and certain minerals, but they do not contain Vitamin B12.
Choice D rationale:
Stewed tomatoes are not a reliable source of Vitamin B12. They are a good source of certain vitamins and minerals, but not Vitamin B12.
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