which vitamin deficiency is most associated with night blindness
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Nursing Elites

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. An 8-year-old child is placed in 90-90 traction for a fractured femur. The nurse notices that the weights are touching the foot of the bed. What action should the nurse take?

Correct answer: C

Rationale: The nurse should ensure that the weights in traction are not touching the foot of the bed. This is crucial to maintain proper alignment and effectiveness of the traction. When the weights touch the bed, it can compromise the traction's function and delay healing. Choices A, B, and D are incorrect as they do not address the issue of ensuring that the weights are not touching the bed, which is essential for the traction to work effectively.

3. When caring for a client with colostomy, which topical skin preparation should the PN apply around the stoma?

Correct answer: D

Rationale: The correct answer is 'Stomadhesive.' Stomadhesive is a protective barrier used around the stoma to prevent skin irritation and to secure the colostomy bag. This preparation helps to maintain skin integrity and prevent complications such as skin breakdown. Antiseptic cream (Choice A) is not typically used around the stoma as it can irritate the skin. Petroleum jelly (Choice B) is also not recommended as it can interfere with the adhesive properties of the colostomy appliance. Cornstarch (Choice C) is not suitable for application around the stoma as it can promote moisture and lead to skin irritation.

4. A client who had a thyroidectomy 24 hours ago reports tingling around the mouth and in the fingertips. What should the nurse do first?

Correct answer: A

Rationale: Tingling around the mouth and in the fingertips can indicate hypocalcemia, a potential complication after thyroidectomy due to accidental damage to the parathyroid glands. Checking calcium levels is crucial as it helps in diagnosing hypocalcemia accurately. Administering calcium without knowing the actual calcium levels can be dangerous. Assessing the incision site for bleeding is important but not the priority in this situation. Notifying the healthcare provider can be done after assessing and managing the immediate concern of hypocalcemia.

5. A post-operative client develops a sudden onset of chest pain and dyspnea. The nurse suspects a pulmonary embolism (PE). What is the priority nursing action?

Correct answer: A

Rationale: Administering oxygen via face mask is the priority nursing action in a post-operative client suspected of a pulmonary embolism. This intervention helps ensure adequate oxygenation while further assessments and interventions are initiated. Elevating the client's legs is not indicated for a suspected pulmonary embolism; it is more appropriate for conditions like shock. Immediate surgery is not the priority in this situation as the client is experiencing acute symptoms requiring prompt intervention. While notifying the healthcare provider is important, the immediate focus should be on providing oxygen to the client to support respiratory function.

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