Nursing Elites

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

• A. Vitamin A
• B. Vitamin B12
• C. Vitamin C
• D. Vitamin D

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. A male client with TB returns to the clinic for daily antibiotic injections for a urinary infection. The client has been taking anti-tubercular medications for 10 weeks and states he has ringing in his ears. Which prescribed medication should the PN report to the HCP?

• A. Pyridoxine with a B complex multivitamin
• B. Gentamicin 160 mg IM daily
• C. Rifampin 600 mg PO daily
• D. Isoniazid 300 mg PO daily

Correct answer: B

Rationale: The correct answer is B: Gentamicin 160 mg IM daily. Gentamicin is an aminoglycoside antibiotic that can cause ototoxicity, leading to ringing in the ears (tinnitus). This symptom should be reported to the HCP immediately, as it may indicate a need to adjust or discontinue the medication. Choice A, Pyridoxine with a B complex multivitamin, is not the cause of ototoxicity. Choices C and D, Rifampin and Isoniazid, are anti-tubercular medications but are not associated with causing ringing in the ears.

3. What is the primary function of surfactant in the lungs?

• A. Reduce surface tension
• B. Enhance oxygen absorption
• C. Facilitate carbon dioxide release
• D. Increase lung volume

Correct answer: A

Rationale: The primary function of surfactant in the lungs is to reduce surface tension in the alveoli. This reduction in surface tension prevents lung collapse and allows for easier breathing. It is particularly crucial in premature infants to help with lung expansion. Choice B is incorrect because surfactant primarily affects surface tension, not oxygen absorption. Choice C is incorrect because surfactant's main role is not in facilitating carbon dioxide release. Choice D is incorrect because surfactant does not directly increase lung volume; its main role is in reducing surface tension.

4. The PN observes a UAP bathing a bedfast client with the bed in the high position. Which action should the PN take?

• A. Remain in the room to supervise the UAP
• B. Determine if the UAP would like assistance
• C. Assume care of the client immediately
• D. Instruct the UAP to lower the bed for safety

Correct answer: D

Rationale: The correct action for the PN to take in this situation is to instruct the UAP to lower the bed for safety. Keeping the bed in the lowest position during care activities is crucial for preventing falls and injuries to both the client and the caregiver. Instructing the UAP to lower the bed addresses the immediate safety concern. Choice A is incorrect because simply supervising the UAP without addressing the unsafe bed height does not ensure the client's safety. Choice B is incorrect as the priority is to address the safety concern rather than offering assistance to the UAP. Choice C is incorrect as assuming care of the client immediately does not address the root issue of the high bed position.

5. Which hormone is primarily responsible for the regulation of calcium and phosphate in the blood?

• A. Parathyroid hormone
• B. Insulin
• C. Cortisol
• D. Thyroxine

Correct answer: A

Rationale: Parathyroid hormone is the correct answer. It regulates calcium and phosphate levels in the blood by increasing calcium reabsorption in the kidneys and releasing calcium from bones. Insulin is involved in glucose metabolism, not calcium and phosphate regulation. Cortisol is a stress hormone and is not primarily responsible for regulating calcium and phosphate levels. Thyroxine is a thyroid hormone that primarily regulates metabolism, not calcium and phosphate in the blood.

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