Nursing Elites

1. 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?

• A. Preterm newborns have a smaller body surface area than normal newborns.
• B. The added brown fat layer in a preterm newborn reduces his ability to generate heat.
• C. Preterm newborns lack adequate temperature control mechanisms.
• D. The heat in the incubator rapidly dries the sweat of preterm newborns.

Correct answer: C

Rationale: The correct answer is C because preterm newborns have immature temperature regulation mechanisms, making it difficult for them to maintain their body temperature. An incubator helps maintain a stable thermal environment. Choice A is incorrect as the body surface area is not the primary reason for needing an incubator. Choice B is incorrect because brown fat in preterm newborns actually helps generate heat. Choice D is incorrect as the purpose of the incubator is not to dry sweat but to regulate the newborn's temperature.

2. A woman in a women's health clinic is receiving teaching about nutritional intake during her 8th week of gestation. The healthcare provider should advise the woman to increase her daily intake of which of the following nutrients?

• A. Calcium
• B. Vitamin E
• C. Iron
• D. Vitamin D

Correct answer: C

Rationale: During pregnancy, the recommended daily iron intake is higher compared to non-pregnant women. Pregnant women should aim for 27 mg/day of iron, while non-pregnant women require 15 mg/day if under 19 years old and 18 mg/day if between 19 and 50 years old. Iron is essential during pregnancy to support the increased blood volume and ensure the proper oxygen supply to the fetus. Calcium is important for bone health but does not need a significant increase during early pregnancy. Vitamin E and Vitamin D are important but do not have specific increases recommended during the 8th week of gestation.

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

• A. Absence of Phosphatidylglycerol (PG)
• B. Biophysical profile score of 8
• C. Lecithin/sphingomyelin (L/S) ratio of 2:1
• D. Reactive nonstress test

Correct answer: C

Rationale: An L/S ratio of 2:1 indicates fetal lung maturity, as it signifies the presence of surfactant in the amniotic fluid, which helps with lung expansion and prevents collapse at the end of expiration. The absence of PG indicates immaturity of the fetal lungs, as PG appears in the amniotic fluid during the later stages of lung maturation. Biophysical profile scores and nonstress tests are assessments of fetal well-being and do not directly indicate fetal lung maturity. Therefore, choice C is the correct answer.

4. A healthcare provider is assessing a newborn who has a coarctation of the aorta. Which of the following should the provider recognize as a clinical manifestation of coarctation of the aorta?

• A. Increased blood pressure in the arms with decreased blood pressure in the legs
• B. Decreased blood pressure in the arms with increased blood pressure in the legs
• C. Increased blood pressure in both the arms and the legs
• D. Decreased blood pressure in both the arms and the legs

Correct answer: A

Rationale: The correct answer is increased blood pressure in the arms with decreased blood pressure in the legs. Coarctation of the aorta is a congenital heart defect characterized by a narrowing of the aorta, leading to increased blood pressure in the upper extremities and decreased blood pressure in the lower extremities due to decreased blood flow beyond the narrowing. Choice B is incorrect because coarctation of the aorta does not lead to increased blood pressure in the legs. Choice C is incorrect because increased blood pressure in both the arms and legs is not a typical manifestation of coarctation of the aorta. Choice D is incorrect because decreased blood pressure in both the arms and legs is not characteristic of coarctation of the aorta.

5. When teaching a new mother how to use a bulb syringe to suction her newborn's secretions, which of the following instructions should the nurse include?

• A. Insert the syringe tip after compressing the bulb.
• B. Suction each nare before suctioning the mouth.
• C. Insert the tip of the syringe at the center of the newborn's mouth.
• D. Stop suctioning when the newborn's cry sounds clear.

Correct answer: D

Rationale: The correct instruction for using a bulb syringe to suction a newborn's secretions is to stop suctioning when the newborn's cry no longer sounds like it is coming through a bubble of fluid or mucus. This indicates that the airways are clear, and further suctioning is not needed to prevent irritation or damage to the delicate tissues of the newborn's nose and throat. Choices A, B, and C are incorrect because inserting the syringe tip before compressing the bulb, suctioning each nare before the mouth, and inserting the tip at the center of the mouth can potentially harm the newborn and are not recommended practices for using a bulb syringe in this context.

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