A nurse is teaching a client who is scheduled for an amniocentesis about the purpose of a lecithin/sphingomyelin ratio test.
Which of the following statements should the nurse make?
"This test will check your baby's lung maturity.”.
"This test will check your baby's blood type.”.
"This test will check your baby's liver development.”.
"This test will check your baby for genetic disorders.”.
The Correct Answer is A
Choice A rationale
The lecithin/sphingomyelin (L/S) ratio test is a crucial assessment of fetal lung maturity. Lecithin and sphingomyelin are phospholipids that are components of surfactant, a substance vital for reducing surface tension in the alveoli and preventing lung collapse at birth. A ratio of 2: or greater generally indicates adequate lung maturity.
Choice B rationale
The L/S ratio test does not assess the baby's blood type. Fetal blood typing is determined through other methods, such as cordocentesis or maternal blood tests for fetal DNA, if clinically indicated. The L/S ratio specifically evaluates the quantity and ratio of pulmonary surfactants.
Choice C rationale
This test does not check the baby's liver development. Fetal liver development is assessed through different parameters, such as ultrasound visualization of liver size, blood flow characteristics, and specific liver enzyme levels if a concern exists. The L/S ratio is solely focused on pulmonary maturity.
Choice D rationale
The L/S ratio test is not used to check for genetic disorders. Genetic disorders are identified through chromosomal analysis, DNA sequencing, or biochemical tests performed on amniotic fluid cells obtained during amniocentesis, or through chorionic villus sampling. The L/S ratio is a physiological marker of lung readiness.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
Applying ice packs aligns with Western medical practices for reducing swelling and pain. However, traditional yin and yang beliefs often emphasize warmth during the postpartum period to restore a perceived loss of "hot" energy after childbirth. Cold applications could be seen as counterproductive to this balance.
Choice B rationale
Maintaining a cool environment would contradict the traditional belief in maintaining warmth for the postpartum client. In many cultures, a "hot-cold" theory dictates that the postpartum period is a "cold" state, requiring warmth to restore balance and prevent illness. A cool room would be perceived as harmful.
Choice C rationale
Providing a warm beverage aligns with traditional yin and yang postpartum care. Childbirth is often seen as a significant loss of "yang" energy (warmth, activity). Consuming warm foods and beverages helps to replenish this energy, promoting restoration of balance and preventing "cold" illnesses according to this belief system.
Choice D rationale
Showering twice daily, especially with cool water, might conflict with traditional postpartum practices that often restrict bathing or emphasize warm baths. The concern is often about preventing "cold" from entering the body and disrupting the balance, as well as conserving energy during a vulnerable period.
Correct Answer is D
Explanation
Choice A rationale
Hydrocodone is an opioid analgesic, but it is typically used for moderate to severe pain and is not commonly administered as a primary agent for severe active labor pain due to its slower onset and potential for more pronounced maternal and neonatal respiratory depression compared to other rapid-acting opioids.
Choice B rationale
Naproxen is a nonsteroidal anti-inflammatory drug (NSAID) primarily used for mild to moderate pain and inflammation. It is generally not effective enough for severe labor pain and is contraindicated in late pregnancy due to potential adverse effects on fetal circulation, such as premature closure of the ductus arteriosus.
Choice C rationale
Naloxone hydrochloride is an opioid antagonist used to reverse opioid-induced respiratory depression. Administering naloxone during active labor would reverse the effects of any pain medication given, exacerbating the client's pain and potentially precipitating opioid withdrawal symptoms, thus it is not an appropriate pain management strategy.
Choice D rationale
Fentanyl citrate is a potent, rapid-acting synthetic opioid analgesic commonly used for severe pain during active labor. Its quick onset and short duration of action make it suitable for intermittent administration, allowing for effective pain relief with a lower risk of prolonged neonatal respiratory depression compared to longer-acting opioids.
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