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. A 12-year-old child is receiving a blood transfusion via an infusion pump and begins to complain of 'itchy' skin 15 minutes after the unit of blood is started. The child appears flushed. What action should the nurse take first?

• A. Apply lotion to the skin
• B. Stop the transfusion
• C. Inspect the infusion site
• D. Obtain the vital signs

Correct answer: B

Rationale: Stopping the transfusion immediately is crucial when signs of a transfusion reaction, such as itching and flushing, occur. This action is taken to prevent further exposure to the potentially harmful transfused blood. Applying lotion to the skin, inspecting the infusion site, or obtaining vital signs can be important but are secondary to stopping the transfusion to ensure the safety of the child. Applying lotion may not address the underlying issue of a possible transfusion reaction. Inspecting the infusion site and obtaining vital signs can be done after stopping the transfusion, as patient safety is the top priority in this situation.

3. What is the primary purpose of administering Rho(D) immune globulin (RhoGAM) to an Rh-negative mother after childbirth?

• A. To prevent Rh sensitization in future pregnancies
• B. To treat anemia in the newborn
• C. To increase the mother's white blood cell count
• D. To prevent infection in the newborn

Correct answer: A

Rationale: The correct answer is A: To prevent Rh sensitization in future pregnancies. RhoGAM is given to an Rh-negative mother to prevent the development of antibodies against Rh-positive blood cells. This prevents Rh sensitization, which could lead to hemolytic disease in future Rh-positive pregnancies. Choices B, C, and D are incorrect because RhoGAM is not used to treat anemia in the newborn, increase the mother's white blood cell count, or prevent infection in the newborn.

4. When reinforcing diet teaching for a client diagnosed with hypokalemia, which foods should the PN encourage the client to eat? Select All That Apply

• A. Orange juice, oranges, bananas
• B. All are applicable
• C. Collard greens, kale, turnips
• D. Soybeans, lima beans, spinach

Correct answer: B

Rationale: The correct answer is B: All are applicable. Foods rich in potassium, such as orange juice, oranges, bananas, collard greens, kale, soybeans, lima beans, and spinach, are essential for managing hypokalemia. These options provide a significant source of potassium, which helps in maintaining normal heart and muscle function. Choice A is incorrect because it does not include all the appropriate potassium-rich foods. Choice C is incorrect as it only mentions vegetables rich in potassium, missing out on other essential sources like fruits and beans. Choice D is incorrect as it lacks key potassium-rich foods like oranges and bananas.

5. What is the function of the enzyme lactase in the digestive system?

• A. Breaks down lactose into glucose and galactose
• B. Breaks down proteins into amino acids
• C. Converts starch into maltose
• D. Breaks down fats into fatty acids

Correct answer: A

Rationale: The correct answer is A: 'Breaks down lactose into glucose and galactose.' Lactase is an enzyme in the small intestine that specifically breaks down lactose, the sugar found in milk, into glucose and galactose for absorption. Choice B is incorrect because proteins are broken down into amino acids by protease enzymes. Choice C is incorrect because the enzyme amylase converts starch into maltose. Choice D is incorrect as lipase enzymes break down fats into fatty acids.

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