a patient who will begin taking trimethoprim sulfamethoxazole tmp smx asks the nurse why the combination drug is necessary the nurse will explain that
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HESI RN

HESI RN Medical Surgical Practice Exam

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

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. After teaching a client with nephrotic syndrome and a normal glomerular filtration rate, the nurse assesses the client’s understanding. Which statement made by the client indicates a correct understanding of the nutritional therapy for this condition?

Correct answer: B

Rationale: In nephrotic syndrome, there is significant renal loss of protein leading to hypoalbuminemia and edema formation. If glomerular filtration is normal or near normal, increased protein loss should be matched by an increased intake of protein. Therefore, the correct statement indicating a correct understanding of the nutritional therapy for this condition is increasing protein intake. Decreasing fat, decreasing carbohydrates, or increasing vitamin C intake is not necessary for addressing the underlying issues associated with nephrotic syndrome.

3. Which of the following is the best indicator of fluid balance in a patient with heart failure?

Correct answer: A

Rationale: Daily weight measurements are the best indicator of fluid balance in a patient with heart failure. Changes in weight reflect fluid retention or loss more accurately than other methods. Monitoring intake and output (choice B) is essential but may not provide a comprehensive picture of fluid status. Skin turgor (choice C) and checking for peripheral edema (choice D) are more indicative of dehydration and fluid overload, respectively, rather than overall fluid balance.

4. A client who is receiving chemotherapy asks the nurse, 'Why is so much of my hair falling out each day?' Which response by the nurse best explains the reason for alopecia?

Correct answer: A

Rationale: The correct answer is A: 'Chemotherapy affects the cells of the body that grow rapidly, both normal and malignant.' Chemotherapy targets rapidly dividing cells, which include not only cancer cells but also healthy cells like those in hair follicles. This leads to alopecia (hair loss) as a common side effect. Choice B is incorrect as alopecia is primarily associated with chemotherapy and not long-term steroid therapy. Choice C is incorrect because while hair may grow back after chemotherapy, it may not always be to the same extent or thickness. Choice D is incorrect as chemotherapy-induced hair loss is often temporary and reversible, not permanent alterations in hair follicles.

5. After educating a client with hypertension secondary to renal disease, the nurse assesses the client’s understanding. Which statement made by the client indicates a need for additional teaching?

Correct answer: B

Rationale: Choice B is incorrect because the client should not restrict fluids during the day due to increased urination at night. Clients with renal disease may be prescribed fluid restrictions, and they should be thoroughly assessed for potential dehydration. To decrease increased nocturnal voiding, clients should consume fluids earlier in the day. Choices A, C, and D are correct statements. Managing blood pressure is crucial to slow the progression of renal dysfunction. Limiting protein intake is important in renal disease management, and clients should be referred to a dietitian as needed. Taking antihypertensive medications as directed is essential for blood pressure control.

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