A nurse is caring for a client who is scheduled for a cesarean birth based on the fetal lungs having reached maturity. Which of the following indicates that the fetal lungs are mature?
Biophysical profile score of 8
Phosphatidylglycerol (PG) absent
Lecithin/sphingomyelin (L/S) ratio of 2:1
Nonstress test is reactive
The Correct Answer is C
Choice A reason: A biophysical profile score of 8 is a good indicator of fetal well-being, but it does not measure the fetal lung maturity. It consists of five parameters: fetal breathing movements, fetal movements, fetal tone, amniotic fluid volume, and nonstress test.
Choice B reason: Phosphatidylglycerol (PG) is a phospholipid that is present in the fetal lung surfactant. Its presence indicates that the fetal lungs are mature, while its absence does not rule out the possibility of maturity.
Choice C reason: Lecithin and sphingomyelin are two phospholipids that are found in the fetal lung surfactant. The L/S ratio is the ratio of lecithin to sphingomyelin in the amniotic fluid. A ratio of 2:1 or higher indicates that the fetal lungs are mature and can produce enough surfactant to prevent respiratory distress syndrome.
Choice D reason: A nonstress test is a test that measures the fetal heart rate and its response to fetal movements. A reactive test means that the fetal heart rate increases by at least 15 beats per minute for at least 15 seconds twice in a 20-minute period. This indicates that the fetus is healthy and well-oxygenated, but it does not reflect the fetal lung maturity.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: Chlamydia is not the least common of all the major sexually transmitted diseases. In fact, it is the most common bacterial STD in the world, affecting about 131 million people each year. ¹ Therefore, this statement is false and does not need to be emphasized.
Choice B reason: Good handwashing technique is not the best way to prevent chlamydial infections. Chlamydia is spread through sexual contact, not through casual contact or hygiene. The best way to prevent chlamydial infections is to practice safe sex, such as using condoms, limiting the number of partners, and getting tested regularly. Therefore, this statement is misleading and does not need to be emphasized.
Choice C reason: Most people infected with chlamydia are unaware that they are infected. This is because chlamydia often has no symptoms, or the symptoms are mild and easily ignored. This can lead to serious complications, such as pelvic inflammatory disease, infertility, ectopic pregnancy, and increased risk of HIV. Therefore, this statement is true and needs to be emphasized.
Choice D reason: Burning and pain with urination is a frequent symptom of chlamydial infections. However, this symptom is not specific to chlamydia, as it can also occur with other STDs or urinary tract infections. Moreover, not all people with chlamydia experience this symptom, especially women. Therefore, this statement is not very informative and does not need to be emphasized.
Correct Answer is B
Explanation
Choice A reason: Poor maternal weight gain is a risk factor for IUGR, as it indicates inadequate nutrition and fetal growth.
Choice B reason: Premature rupture of membranes is not a risk factor for IUGR, as it does not affect the placental function or blood flow. It is a complication of pregnancy that can lead to infection, preterm labor, or cord prolapse.
Choice C reason: Smoking is a risk factor for IUGR, as it reduces the oxygen and nutrient delivery to the fetus and causes vasoconstriction of the placental vessels.
Choice D reason: Gestational hypertension is a risk factor for IUGR, as it impairs the placental perfusion and causes fetal hypoxia and acidosis.
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