what is the primary function of hemoglobin in red blood cells
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HESI LPN

HESI PN Exit Exam 2023

1. What is the primary function of hemoglobin in red blood cells?

Correct answer: A

Rationale: The correct answer is A: Oxygen transport. Hemoglobin in red blood cells binds to oxygen in the lungs and carries it to tissues throughout the body, releasing it where needed. This process is essential for cellular respiration and energy production. Choices B, C, and D are incorrect because hemoglobin's primary function is not related to immunity, blood clotting, or carbon dioxide transport. Hemoglobin's main role is to transport oxygen, ensuring adequate oxygen supply to body tissues for metabolic processes.

2. The PN is reviewing care instructions with a client who has diabetic retinopathy and is experiencing glare around lights. What should the PN reinforce with the client?

Correct answer: B

Rationale: The correct answer is B. Avoiding driving at night is recommended for clients experiencing glare around lights due to diabetic retinopathy. This can help reduce the risk of accidents and visual discomfort. Making adjustments to the personal schedule to avoid nighttime driving is a practical approach to manage the glare. Choices A, C, and D are incorrect because covering eyes with compresses, exerting pressure on the inner canthus, or applying an eye shield are not effective strategies for managing glare associated with diabetic retinopathy.

3. How does the home care nurse determine that a 78-year-old client is unable to remain in his current residence alone?

Correct answer: C

Rationale: The correct answer is assessing the home environment. This process is vital in evaluating whether an elderly client can safely live independently. Factors like safety hazards and the client's ability to handle daily activities are considered during this assessment. Choices A, B, and D are incorrect because determining the client's ability to remain in his residence alone relies more on evaluating the home environment for safety and suitability rather than the client's goals, learning level, or distractions in the home.

4. A client who is post-operative from a bowel resection is experiencing abdominal distention and pain. The nurse notices the client has not passed gas or had a bowel movement. What should the nurse assess first?

Correct answer: A

Rationale: Assessing bowel sounds is crucial in this situation as it helps determine if the client's gastrointestinal tract is functioning properly. Absent or hypoactive bowel sounds can indicate an ileus, a common post-operative complication. Assessing fluid intake (Choice B) is important but should come after assessing bowel sounds. Pain assessment (Choice C) is essential but addressing the physiological issue should take precedence. Checking the surgical incision (Choice D) is relevant but not the priority when the client is experiencing abdominal distention and potential gastrointestinal complications.

5. 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?

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.

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