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 and UAP enter a client's room and find the client lying on the bed. The PN determines that the client is unresponsive. Which instruction should the PN give the UAP first?

Correct answer: A

Rationale: The correct answer is to instruct the UAP to obtain emergency help first. When a client is unresponsive, it could indicate a life-threatening condition that requires immediate intervention. Ensuring emergency help is on the way is the priority to address the potentially critical situation. Feeling for a carotid pulse, bringing a glucometer, or checking the blood pressure are important assessments but should come after taking steps to secure immediate assistance.

3. A male client attends a community support program for mentally impaired and chemically abusing clients. The client tells the PN that his drugs of choice are cocaine and heroin. What is the greatest health risk for this client?

Correct answer: B

Rationale: The correct answer is B: Hepatitis. Hepatitis is the greatest health risk for this client due to the potential for contracting the disease through needle-sharing, common among drug users. This can lead to serious liver complications. While hypertension, glaucoma, and diabetes are all important health concerns, they are not directly associated with the drug abuse mentioned in the scenario.

4. All of the following are posture and body alignment problems EXCEPT:

Correct answer: C

Rationale: Thrombosis is a condition involving blood clots and is not related to posture or body alignment, unlike kyphosis, scoliosis, and lumbar lordosis, which are spinal alignment issues. Kyphosis refers to excessive outward curvature of the spine, scoliosis is characterized by a sideways curvature of the spine, and lumbar lordosis involves an exaggerated inward curve in the lower back. Thrombosis, on the other hand, is a condition where blood clots form in the blood vessels, not a posture or body alignment problem.

5. A female client who has been taking oral contraceptives for the past year comes to the clinic for an annual exam. Which finding is most important for the PN to report to the HCP?

Correct answer: C

Rationale: Left calf pain could indicate deep vein thrombosis (DVT), a serious side effect of oral contraceptives. Reporting this finding to the healthcare provider is critical for further evaluation and treatment. Breast tenderness and change in menstrual flow are common side effects of oral contraceptives and may not be as urgent as left calf pain. Weight gain of 5 pounds, while noteworthy, is not as concerning as a possible indication of DVT.

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