Nursing Elites

1. Why is the combination drug trimethoprim-sulfamethoxazole (TMP-SMX) necessary?

• A. To broaden the antibacterial spectrum.
• B. To decrease bacterial resistance.
• C. To improve the taste.
• D. To minimize toxic effects.

Correct answer: B

Rationale: The correct answer is B: To decrease bacterial resistance. Trimethoprim-sulfamethoxazole (TMP-SMX) is a combination drug used to prevent bacterial resistance to sulfonamides. It works by targeting different steps in the bacterial metabolic pathway, making it harder for bacteria to develop resistance. Choice A is incorrect because the combination does not broaden the antibacterial spectrum; instead, it enhances effectiveness against specific bacteria. Choice C is incorrect as taste improvement is not the primary reason for combining these drugs. Choice D is incorrect because while combination therapy can sometimes help minimize toxic effects, the primary purpose in this case is to address bacterial resistance.

2. A client with chronic renal failure is on a low-protein diet. Which of the following is the best response by the nurse when the client asks why this diet is necessary?

• A. It reduces the workload on your kidneys.
• B. It helps prevent the buildup of waste products.
• C. It helps maintain electrolyte balance in your body.
• D. It helps prevent dehydration.

Correct answer: B

Rationale: A low-protein diet is necessary for clients with chronic renal failure because it helps prevent the buildup of waste products, such as urea, in the body. Excess protein can lead to the accumulation of waste products that the compromised kidneys may not effectively filter out, further burdening the already impaired renal function. Choices A, C, and D are incorrect because the primary reason for a low-protein diet in chronic renal failure is to reduce the workload on the kidneys by minimizing the production of waste products that can exacerbate the condition, not specifically to reduce kidney workload, maintain electrolyte balance, or prevent dehydration.

3. The patient is receiving sulfadiazine. The healthcare provider knows that this patient’s daily fluid intake should be at least which amount?

• A. 1000 mL/day
• B. 1200 mL/day
• C. 2000 mL/day
• D. 2400 mL/day

Correct answer: C

Rationale: Sulfadiazine may lead to crystalluria, a condition where crystals form in the urine. Adequate fluid intake helps prevent this adverse effect by ensuring urine is dilute enough to prevent crystal formation. The recommended daily fluid intake for a patient receiving sulfadiazine is at least 2000 mL/day. Choices A, B, and D are incorrect because they do not provide a sufficient amount of fluid intake to prevent crystalluria in patients on sulfadiazine.

4. After confirming that liquids are allowed, which assessment action should the nurse consider a priority for a client who is fully awake after a gastroscopy?

• A. Listen to bilateral lung and bowel sounds.
• B. Obtain the client's pulse and blood pressure.
• C. Assist the client to the bathroom to void.
• D. Check the client's gag and swallow reflexes.

Correct answer: D

Rationale: After a gastroscopy, it is crucial for the nurse to prioritize checking the client's gag and swallow reflexes before allowing them to drink anything. This is because the effects of local anesthesia need to dissipate, and the airway's protective reflexes, including the gag and swallow reflexes, must have returned to prevent aspiration. Listening to lung and bowel sounds (Choice A) may be important but does not take precedence over ensuring the client's safety post-gastroscopy. Obtaining the client's pulse and blood pressure (Choice B) is also important but not the priority in this scenario. Assisting the client to the bathroom to void (Choice C) is a routine nursing action and is not directly related to the immediate safety concern of checking the client's gag and swallow reflexes post-gastroscopy.

5. A nurse contacts the healthcare provider after reviewing a client’s laboratory results and noting a blood urea nitrogen (BUN) of 35 mg/dL and a creatinine of 1.0 mg/dL. For which action should the nurse recommend a prescription?

• A. Intravenous fluids
• B. Hemodialysis
• C. Fluid restriction
• D. Urine culture and sensitivity

Correct answer: A

Rationale: The normal range for BUN is 10 to 20 mg/dL, and for creatinine, it is 0.6 to 1.2 mg/dL in males and 0.5 to 1.1 mg/dL in females. Creatinine is a more specific marker for kidney function compared to BUN. In this case, the client's creatinine level is within the normal range, indicating a non-renal cause for the elevated BUN. Dehydration is a common cause of increased BUN, so the appropriate action would be to recommend intravenous fluids to address the dehydration. Fluid restriction is not indicated as the client needs hydration. Hemodialysis is not appropriate for dehydration and is typically reserved for renal failure. The laboratory results do not suggest an infection, making a urine culture and sensitivity unnecessary in this scenario.

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