Nursing Elites

1. What is the primary function of surfactant in the lungs?

• A. Reduce surface tension
• B. Enhance oxygen absorption
• C. Facilitate carbon dioxide release
• D. Increase lung volume

Correct answer: A

Rationale: The primary function of surfactant in the lungs is to reduce surface tension in the alveoli. This reduction in surface tension prevents lung collapse and allows for easier breathing. It is particularly crucial in premature infants to help with lung expansion. Choice B is incorrect because surfactant primarily affects surface tension, not oxygen absorption. Choice C is incorrect because surfactant's main role is not in facilitating carbon dioxide release. Choice D is incorrect because surfactant does not directly increase lung volume; its main role is in reducing surface tension.

2. What is the function of the enzyme lactase in the digestive system?

• A. Breaks down lactose into glucose and galactose
• B. Breaks down proteins into amino acids
• C. Converts starch into maltose
• D. Breaks down fats into fatty acids

Correct answer: A

Rationale: The correct answer is A: 'Breaks down lactose into glucose and galactose.' Lactase is an enzyme in the small intestine that specifically breaks down lactose, the sugar found in milk, into glucose and galactose for absorption. Choice B is incorrect because proteins are broken down into amino acids by protease enzymes. Choice C is incorrect because the enzyme amylase converts starch into maltose. Choice D is incorrect as lipase enzymes break down fats into fatty acids.

3. Which of the following is a priority for the nurse to include in the teaching of a client who was recently prescribed alprazolam (Xanax) as an oral medication?

• A. Monitor heart rate before taking the medication
• B. Monitor temperature daily
• C. Avoid unprotected exposure to sunlight
• D. Avoid alcohol

Correct answer: D

Rationale: The correct answer is D: 'Avoid alcohol.' Alprazolam (Xanax) can have central nervous system depressant effects, which are exacerbated by alcohol. It is crucial to avoid alcohol while taking this medication to prevent severe sedation and respiratory depression. Monitoring heart rate (choice A) is not directly related to alprazolam administration. Monitoring temperature daily (choice B) is not a priority teaching point for a client prescribed alprazolam. Avoiding unprotected exposure to sunlight (choice C) is not specifically linked to the use of alprazolam.

4. The nurse is assisting the recreational director of a long-term care facility in planning outdoor activities for the wheelchair-bound older residents who are mentally alert. Which activity meets the physical and social needs of these residents?

• A. An open-air concert
• B. A tea party in the courtyard
• C. A team ring-toss competition
• D. A picnic in the park

Correct answer: B

Rationale: A tea party in the courtyard provides a social and physical activity suitable for wheelchair-bound older residents who are mentally alert. It offers an opportunity for social interaction, enjoyment of the outdoors, and participation in a physical activity without the need for extensive mobility. An open-air concert may not provide the same level of social interaction or physical engagement as a tea party. A team ring-toss competition may be physically challenging for wheelchair-bound residents. A picnic in the park could present challenges related to accessibility and might not foster the same level of social interaction as a tea party in a more contained courtyard setting.

5. The nurse is teaching a pregnant client how to distinguish prelabor contractions from true labor contractions. Which statement about prelabor contractions is accurate?

• A. They are irregular
• B. They are usually felt in the abdomen
• C. They start in the back and radiate to the abdomen
• D. They become more intense during walking

Correct answer: B

Rationale: The correct statement about prelabor contractions (Braxton Hicks contractions) is that they are usually felt in the abdomen. They are irregular in nature and do not intensify with movement. Choice A is incorrect because prelabor contractions are irregular, not regular. Choice C is incorrect as prelabor contractions do not start in the back and radiate to the abdomen. Choice D is incorrect as prelabor contractions do not become more intense during walking.

Similar Questions