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 D
Explanation
Choice A reason: Using male condoms is one of the most effective ways to prevent the transmission of STDs, especially those caused by viruses or bacteria. However, condoms are not 100% foolproof and may not protect against some STDs that can be spread by skin-to-skin contact, such as herpes or HPV.
Choice B reason: Having multiple sex partners increases the risk of getting an STD, as it exposes the person to more potential sources of infection. The more partners a person has, the more likely they are to encounter someone who has an STD or does not know their status.
Choice C reason: Delaying sexual relations as long as possible is another way to lower the risk of getting an STD, as it reduces the number of sexual exposures and the chances of encountering an infected partner. Young people are especially vulnerable to STDs, as they may have less knowledge, experience, or access to preventive measures.
Choice D reason: All of the above choices are valid ways to lower the risk of getting an STD, but none of them are sufficient on their own. The best way to prevent STDs is to practice abstinence or be in a mutually monogamous relationship with a tested and uninfected partner. Additionally, regular testing, screening, and treatment are essential for detecting and curing STDs before they cause serious complications.
Correct Answer is B
Explanation
Choice A reason: Ceftriaxone is incorrect because it is not the drug of choice for syphilis treatment. It is a cephalosporin antibiotic that can be used for other bacterial infections, such as gonorrhea, meningitis, or pneumonia.
Choice B reason: Penicillin G is correct because it is the drug of choice for syphilis treatment. It is a penicillin antibiotic that can effectively cure syphilis at any stage, except for neurosyphilis, which requires intravenous administration.
Choice C reason: Acyclovir is incorrect because it is not the drug of choice for syphilis treatment. It is an antiviral medication that can be used for viral infections, such as herpes simplex virus, varicella-zoster virus, or cytomegalovirus.
Choice D reason: Tetracycline is incorrect because it is not the drug of choice for syphilis treatment. It is a tetracycline antibiotic that can be used for other bacterial infections, such as chlamydia, acne, or Lyme disease.
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