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. An 8-year-old is placed in 90-90 traction for a fractured femur resulting from a motor vehicle collision. Which finding requires further action by the PN?

Correct answer: C

Rationale: In 90-90 traction, it is crucial to ensure that the weights are not touching the foot of the bed as this can disrupt the effective application of traction. This interference can hinder the proper alignment of the fractured femur and impede the healing process. Therefore, this finding requires immediate action to prevent complications. Choices A, B, and D are not directly related to the proper application of traction and do not pose a risk to the patient's treatment or well-being. No bowel movement for two days may indicate constipation but does not directly relate to the traction. Mother assisting the child in changing positions is a supportive action. The child being able to move the toes freely when tickled indicates neurological function, which is a positive sign.

3. The client diagnosed with HIV is taught by the nurse that the condition is transmitted through

Correct answer: A

Rationale: HIV can be transmitted from a mother to her baby during childbirth or breastfeeding, making choice A the correct answer. Tears, human bites, and insect bites are not common modes of HIV transmission. While human bites can potentially transmit the virus, it is less common compared to mother-to-child transmission.

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. The nurse is assisting with the admission of a young adult female Korean exchange student with acute abdominal pain. Although the client has been able to easily answer questions, when asked about sexual activity, she looks away. What action should the nurse take?

Correct answer: D

Rationale: Observing the client's response to another question is the most appropriate action in this scenario. By doing so, the nurse can assess whether the client's discomfort is due to cultural sensitivity or a misunderstanding. This approach allows the nurse to proceed with sensitivity and respect, ensuring effective communication. Option A is incorrect because omitting the section of the assessment form may result in missing crucial information relevant to the client's condition. Option B jumps to assumptions about a language barrier without confirming it first. Option C focuses on rewording the question without addressing the underlying issue causing the client's discomfort, which may not necessarily be due to a lack of understanding.

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