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 C
Explanation
Choice A rationale: This statement is not accurate, as startling in response to a loud noise does not necessarily indicate that the baby can hear normally. Startling can be a normal reflex response and may not accurately assess the baby's hearing ability.
Choice B rationale: While it is true that many forms of hearing loss are not inherited, the client's concern about her family history of deafness is valid. It is essential to address her concerns and provide appropriate information about the hearing screening.
Choice C rationale: Routine hearing screenings are typically performed on newborns to identify any potential hearing problems early on. Early detection and intervention for hearing loss can lead to better outcomes for the baby's language development and overall well-being. By reassuring the client about the hearing screening, the nurse addresses her concerns and provides information about the process.
Choice D rationale: While visual cues and responses are important for the baby's communication and bonding, they do not provide a definitive assessment of the baby's hearing ability. Hearing screening is a more reliable method to detect potential hearing problems in newborns.
Correct Answer is B
Explanation
Choice A rationale: Feeding a formula every 2 hours is not recommended and may lead to overfeeding. Newborns generally feed on demand, and the frequency of feeding can vary.
Choice B rationale: Breastfed newborns may have more frequent bowel movements, sometimes after each feeding. Two to three stools per day would be on the lower side of the normal range for breastfed infants.
Choice C rationale: Breastfeeding newborns typically need to feed frequently to establish a good milk supply and ensure adequate nutrition. Newborns often feed about 8 to 12 times in a 24-hour period, which translates to approximately five to seven times during the day and night.
Choice D rationale: Formula-fed newborns typically have more regular bowel movements compared to breastfed babies. Expecting only one stool every three days in a formula-fed newborn could indicate constipation, and it is not the expected norm.
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