what is the primary function of hemoglobin in red blood cells
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Nursing Elites

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. A nurse is completing a focused assessment of an older adult's skin. The nurse notes a crusted 0.7 cm lesion on the client's forehead. Which action should the nurse take in response to this finding?

Correct answer: A

Rationale: A crusted lesion, especially in an older adult, could be indicative of skin cancer or another serious condition. Therefore, reporting this finding to the healthcare provider is crucial for further evaluation and appropriate management. Placing an occlusive dressing (Choice B) could prevent proper assessment and treatment. Applying a warm compress (Choice C) may not be suitable for a suspicious skin lesion as it could worsen the condition. Explaining it as a normal skin change (Choice D) without proper evaluation can delay necessary interventions and potentially harm the patient.

3. When assisting an older male client recovering from a stroke to ambulate with a cane, where should the nurse place the cane in relation to the client's body?

Correct answer: B

Rationale: The correct answer is B: 'On the opposite side of the affected extremity.' Placing the cane on the opposite side of the affected extremity provides maximum support and stability during ambulation for a client recovering from a stroke. This positioning helps to offload weight from the affected side and improves balance. Choice A is incorrect because placing the cane in front of the body can lead to incorrect weight distribution and instability. Choice C is incorrect as placing the cane one foot away from the body may not provide adequate support and can compromise balance. Choice D is incorrect as placing the cane on the same side as the affected extremity does not offer the necessary balance and support needed for safe ambulation.

4. A client on bedrest refuses to wear the prescribed pneumatic compression devices after surgery. Which action should the PN implement in response to the client's refusal?

Correct answer: A

Rationale: The correct action for the PN to implement when a client refuses pneumatic compression devices is to emphasize the importance of active foot flexion. Active foot flexion exercises can help prevent deep vein thrombosis (DVT) in clients who are not using the compression devices. Encouraging some form of circulation-promoting activity is crucial to reduce the risks associated with immobility. Checking the surgical dressing (Choice B) is important but not the immediate action to address the refusal of compression devices. Completing an incident report (Choice C) is not necessary in this situation as the client's refusal is not an incident. Explaining the use of an incentive spirometer (Choice D) is not directly related to addressing the refusal of compression devices for DVT prevention.

5. In what order should the PN implement these steps to provide wound care? (Place in correct order.)

Correct answer: D

Rationale: The correct answer is 'D - All of the Above.' The PN should first don procedure gloves to maintain aseptic technique, then remove the dressing to assess the wound, and finally apply prescribed medications to the wound. This sequence ensures that non-sterile tasks like donning gloves are done before sterile tasks like applying medications, reducing the risk of wound contamination. Choices A, B, and C are all essential steps in providing effective wound care.

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