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. A client is complaining of a tingling sensation in the fingers, nose tip, and earlobes 24 hours after a total thyroidectomy. Which measure should the PN implement first?

Correct answer: C

Rationale: The correct answer is C: Obtain prescribed calcium gluconate for tetany. Tingling sensations post-thyroidectomy may indicate hypocalcemia, a potential complication that requires prompt treatment with calcium gluconate to prevent tetany. Initiating L-thyroxine replacement therapy (choice B) is important but not the first priority in this situation. Applying sequential compression devices (choice A) is not indicated for tingling sensations and does not address the potential complication of hypocalcemia. Preparing for an emergency tracheotomy (choice D) is not warranted based on the client's symptoms of tingling sensations.

3. What should the nurse do to complete a focused assessment for a female client with inflamed and painful hemorrhoids?

Correct answer: D

Rationale: Asking the client about the duration of discomfort related to hemorrhoids is the best intervention to implement for a focused assessment. This information provides important context for assessing the severity and chronicity of the condition, which is crucial for developing an appropriate care plan. Choices A, B, and C do not directly address the need to gather information about the duration of symptoms, which is essential for understanding the client's condition.

4. 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.

5. After admission, which observation is most important for the nurse to report immediately for an adult client who weighs 150 pounds and has partial-thickness and full-thickness burns over 40% of the body from a house fire?

Correct answer: D

Rationale: A urinary output of 20 ml/hr is a sign of inadequate kidney perfusion and could indicate hypovolemic shock, which requires immediate intervention. In this situation, with severe burns over a large portion of the body, monitoring urinary output is crucial to assess kidney function and fluid status. Poor appetite, systolic blood pressure at 102, and painful moaning and crying are important but do not indicate the immediate need for intervention like inadequate urinary output does.

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