what is the primary function of the 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 primary function of hemoglobin in red blood cells is to transport oxygen from the lungs to body tissues and return carbon dioxide from the tissues to the lungs. Hemoglobin binds to oxygen in the lungs and releases it in the body's tissues. Choice B is incorrect because hemoglobin is not involved in protecting the body from infections. Choice C is incorrect because blood clotting is mainly facilitated by platelets and clotting factors, not hemoglobin. Choice D is incorrect because the regulation of body temperature is mainly controlled by processes like sweating and shivering, not by hemoglobin.

2. A client who had an abdominal hysterectomy is experiencing minimal urine output despite adequate fluid intake. What should the nurse assess first?

Correct answer: C

Rationale: Assessing the patency of the urinary catheter is crucial in this situation. A blocked catheter could be a common cause of decreased urine output following surgery. While checking the IV catheter insertion site (Choice B) is important, it is not the priority in this case. Examining the client's bladder for distension (Choice A) is relevant, but assessing the patency of the catheter takes precedence in resolving the issue of decreased urine output. Monitoring vital signs (Choice D) is a routine nursing task but not the priority when dealing with decreased urine output post-surgery.

3. The nurse is assigned to administer medications in a long-term care facility. A disoriented resident has no identification band or picture. What is the best nursing action for the nurse to take prior to administering the medications to this resident?

Correct answer: A

Rationale: In a long-term care facility, when a disoriented resident lacks identification, it is crucial to confirm the resident's identity before administering medication to prevent errors. Asking a regular staff member who is familiar with the resident to confirm their identity is the best course of action. This ensures accuracy and safety in medication administration. Holding the medication until a family member can confirm the identity could delay necessary treatment. Re-orienting the resident is important for their well-being but does not address the immediate medication safety concern. Confirming room and bed numbers, though important for administration logistics, does not verify the resident's identity.

4. The single mother of a child with a head injury is sitting at the child's bedside crying when the PN enters the room. The mother states, 'Why did this happen to my child? I just can't cope with this.' How should the PN respond?

Correct answer: C

Rationale: Expressing empathy and acknowledging the mother's feelings helps in providing emotional support during a difficult time. This response validates her emotions and offers a comforting presence. Choice A is not appropriate as it focuses on gathering information rather than addressing the mother's emotional distress. Choice B may come off as dismissive of the mother's feelings and oversimplifies the complexity of the situation. Choice D shifts the responsibility to someone else instead of offering immediate support and comfort.

5. 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.

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