Nursing Elites

1. Which neurotransmitter is most closely associated with mood regulation and is targeted by antidepressants?

• A. Serotonin
• B. Dopamine
• C. GABA
• D. Acetylcholine

Correct answer: A

Rationale: The correct answer is A: Serotonin. Serotonin plays a vital role in mood regulation, and its imbalance is often associated with depression. Many antidepressants function by boosting serotonin levels in the brain. Dopamine (Choice B) is more linked to reward and pleasure pathways in the brain, not primarily targeted for mood regulation. GABA (Choice C) is an inhibitory neurotransmitter that helps reduce neuronal excitability, not primarily associated with mood regulation. Acetylcholine (Choice D) is involved in muscle movement and cognitive functions, not the primary target of antidepressants for mood regulation.

2. Which of the following factors increases the risk of developing a pressure ulcer?

• A. High-protein diet
• B. Frequent repositioning
• C. Immobility
• D. Active range of motion exercises

Correct answer: C

Rationale: Immobility is a significant risk factor for pressure ulcers because it leads to prolonged pressure on specific areas of the body, reducing blood flow and leading to tissue breakdown. Choices A, B, and D are incorrect. A high-protein diet can actually aid in wound healing and tissue repair. Frequent repositioning helps relieve pressure on bony prominences, reducing the risk of pressure ulcers. Active range of motion exercises can improve circulation and prevent muscle atrophy, thereby reducing the risk of pressure ulcers.

3. The PN identifies an electrolyte imbalance, exhibited by changes in mental status, and an elevated blood pressure for a client with progressive heart disease. Which intervention should the PN implement first?

• A. Record usual eating patterns
• B. Evaluate for muscle cramping
• C. Document abdominal girth
• D. Elevate both legs on pillows

Correct answer: B

Rationale: Evaluating for muscle cramping, which is a sign of electrolyte imbalance, is crucial in this scenario. Electrolyte imbalances, especially involving potassium or calcium, can lead to serious complications such as arrhythmias or seizures, which need immediate attention. Recording eating patterns (choice A) may be important for overall assessment but is not the priority in this situation. Documenting abdominal girth (choice C) and elevating legs on pillows (choice D) are not directly related to addressing the immediate concern of electrolyte imbalance and its potential complications.

4. You are caring for a patient who just gave birth to a 6 lb. 13 oz. baby boy. The infant gave out a lusty cry, had a pink coloration all over his body, had flexed arms and legs, cried when stimulated, and had a pulse rate of 94. What Apgar score would you expect for this baby?

• A. 10
• B. 8
• C. 7
• D. 9

Correct answer: D

Rationale: The Apgar score is a method used to quickly assess the health of newborns. In this scenario, the baby would receive 2 points for color, reflex irritability, and muscle tone, but only 1 point for a pulse rate of 94, resulting in an Apgar score of 9. An Apgar score of 9 indicates that the baby is in good health overall. Choice A (10) is incorrect because a pulse rate of 94 would only score 1 point. Choices B (8) and C (7) are incorrect as the given criteria would lead to a higher score, indicating the baby's good health.

5. 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.

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