which vitamin deficiency is most associated with night blindness
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HESI LPN

HESI PN Exit Exam 2023

1. Which vitamin deficiency is most associated with night blindness?

Correct answer: A

Rationale: The correct answer is Vitamin A. Vitamin A deficiency leads to night blindness because this vitamin is crucial for the formation of rhodopsin, a photopigment in the retina. Rhodopsin is essential for vision in low-light conditions. Vitamin B12 deficiency can lead to anemia and neurological issues but is not directly related to night blindness. Vitamin C deficiency can cause scurvy, affecting connective tissues, but not night vision. Vitamin D deficiency can lead to bone disorders but is not primarily associated with night blindness.

2. The PN determines that a client with cirrhosis is experiencing peripheral neuropathy. What action should the PN take?

Correct answer: A

Rationale: Protecting the client's feet from injury is the most appropriate action for a client with cirrhosis experiencing peripheral neuropathy. Peripheral neuropathy can lead to a loss of sensation, making the client prone to unnoticed injuries. Applying a heating pad (Choice B) is contraindicated as it may cause burns or further damage to the affected area. Keeping the client's feet elevated (Choice C) is not directly related to managing peripheral neuropathy and may not provide significant benefit. Assessing the feet and legs for jaundice (Choice D) is important for monitoring liver function in clients with cirrhosis, but in this case, the priority is to prevent injury to the feet due to decreased sensation.

3. An older male client with Alzheimer's disease is admitted to an extended care facility. Which intervention should the PN include in the client's nursing care plan?

Correct answer: A

Rationale: The correct intervention for a client with Alzheimer's disease in an extended care facility is to plan to have the same nursing staff provide care whenever possible. Consistency in caregivers helps reduce confusion and anxiety in clients with Alzheimer’s disease, promoting a stable and supportive environment for the client. Choice B is incorrect as it focuses on activities rather than the consistency of caregivers. Choice C is incorrect as it suggests isolating the client, which can lead to increased confusion and distress. Choice D is incorrect as introducing the client to new people immediately can be overwhelming and may exacerbate their symptoms.

4. The practical nurse is caring for a client whose urine drug screen is positive for cocaine. Which behavior is this client likely to exhibit during cocaine withdrawal?

Correct answer: D

Rationale: The correct answer is D: Powerful craving for more. During cocaine withdrawal, individuals often experience intense cravings for the drug, along with symptoms such as fatigue, depression, and anxiety. These cravings can be overpowering and lead to a strong desire to seek out more cocaine to alleviate the withdrawal symptoms. Choices A, B, and C are incorrect as elevated energy level, euphoria, and high self-esteem are more associated with the effects of cocaine rather than withdrawal symptoms. Withdrawal from cocaine is characterized by the opposite, such as fatigue, low mood, and intense cravings.

5. When caring for a child with sickle cell disease, the PN expects that the child will most likely describe which symptom when experiencing a sickle cell crisis?

Correct answer: B

Rationale: During a sickle cell crisis, a child with sickle cell disease is most likely to describe joint pain. Sickle cell disease leads to the blockage of blood flow by sickled red blood cells, causing ischemia and pain, often felt in the joints and other body parts. Fatigue (choice C) is a nonspecific symptom that can occur in various conditions but is not a characteristic symptom of a sickle cell crisis. While decreased hemoglobin (choice A) can be observed in sickle cell disease, it is not a symptom typically described by a child during a sickle cell crisis. Infection (choice D) can trigger a sickle cell crisis but is not the symptom most likely to be described by the child during the crisis.

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