A client is scheduled for a cesarean birth based on fetal lung maturity. Which finding indicates that the fetal lungs are mature?

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ATI Maternal Newborn Proctored Questions

Question 1 of 5

A client is scheduled for a cesarean birth based on fetal lung maturity. Which finding indicates that the fetal lungs are mature?

Correct Answer: C

Rationale: The correct answer is C: Lecithin/sphingomyelin (L/S) ratio of 2:1. This ratio indicates fetal lung maturity as it signifies adequate production of surfactant in the fetal lungs, essential for proper lung function after birth. Absence of Phosphatidylglycerol (PG) (Choice A) indicates immaturity, Biophysical profile score of 8 (Choice B) assesses overall fetal well-being, not lung maturity, and Reactive nonstress test (Choice D) evaluates fetal well-being, not lung maturity. The L/S ratio of 2:1 is the most reliable indicator of fetal lung maturity.

Question 2 of 5

A client who is postpartum received methylergonovine. Which of the following findings indicates that the medication was effective?

Correct Answer: B

Rationale: The correct answer is B: Fundus firm to palpation. Methylergonovine is a medication used to promote uterine contraction, which helps the uterus return to its pre-pregnancy size and prevent postpartum hemorrhage. When the fundus is firm to palpation, it indicates that the uterus is contracting effectively, which is the desired outcome of giving methylergonovine. A: Increase in blood pressure is not a direct indicator of the medication's effectiveness in this context. C: Increase in lochia may be a sign of uterine involution but does not directly correlate with the effectiveness of methylergonovine. D: Reporting of absent breast pain is not a specific indicator of the medication's effectiveness related to uterine contraction.

Question 3 of 5

A nurse is caring for a preterm newborn who is in an incubator to maintain a neutral thermal environment. The father of the newborn asks the nurse why this is necessary. Which of the following responses should the nurse make?

Correct Answer: C

Rationale: The correct answer is C because preterm newborns lack adequate temperature control mechanisms. Preterm infants have underdeveloped regulatory systems, making them vulnerable to heat loss or overheating. Maintaining a neutral thermal environment in an incubator helps prevent fluctuations in body temperature. Choice A is incorrect because surface area alone does not explain the need for a neutral thermal environment. Choice B is incorrect as brown fat actually helps generate heat in newborns. Choice D is incorrect as drying sweat is not the primary reason for using an incubator in preterm newborns.

Question 4 of 5

A patient on the labor and delivery unit is having induction of labor with oxytocin administered through a secondary IV line. Uterine contractions occur every 2 minutes, last 90 seconds, and are strong to palpation. The baseline fetal heart rate is 150/min, with uniform decelerations beginning at the peak of the contraction and a return to baseline after the contraction is over. Which of the following actions should the nurse take?

Correct Answer: B

Rationale: The correct answer is B: Discontinue the infusion of the IV oxytocin. Decelerations starting at the peak of contractions indicate uteroplacental insufficiency, which can be caused by hyperstimulation from oxytocin. Stopping the oxytocin infusion will help alleviate this issue and improve fetal oxygenation. Choice A would not address the underlying cause of the decelerations. Choice C would worsen the hyperstimulation. Choice D is not directly related to the fetal heart rate decelerations.

Question 5 of 5

A healthcare professional is assessing a newborn immediately following a scheduled cesarean delivery. Which of the following assessments is the healthcare professional's priority?

Correct Answer: A

Rationale: The correct answer is A: Respiratory distress. This is the priority assessment because a newborn's ability to breathe is crucial for survival. Immediate evaluation of respiratory status is essential to ensure the baby is receiving adequate oxygenation. Hypothermia (choice B) can be addressed after addressing any respiratory issues. Accidental lacerations (choice C) are important but not as immediately life-threatening as respiratory distress. Acrocyanosis (choice D) is a common finding in newborns and does not require immediate intervention unless associated with other concerning symptoms.

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