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. A nurse cares for a client with urinary incontinence. The client states, “I am so embarrassed. My bladder leaks like a young child’s bladder.” How should the nurse respond?

Correct answer: C

Rationale: The nurse should accept and acknowledge the client’s concerns, and assist the client to learn techniques that will allow control of urinary incontinence. The nurse should not diminish the client’s concerns with the use of pads or stating statistics about the occurrence of incontinence.

3. A female patient will receive doxycycline to treat a sexually transmitted infection (STI). What information will the nurse include when teaching this patient about this medication?

Correct answer: D

Rationale: The correct answer is D. The desired action of oral contraceptives can be reduced when taken with tetracyclines like doxycycline. Therefore, patients on oral contraceptives should be advised to use a backup contraception method while taking doxycycline. Choice A is incorrect because nausea and vomiting are common adverse effects of doxycycline. Choice B is incorrect because doxycycline is not known for causing teratogenic effects. Choice C is incorrect because dairy products can interfere with the absorption of doxycycline, so they should be avoided when taking this medication.

4. A client’s baseline vital signs are temperature 98°F oral, pulse 74 beats/min, respiratory rate 18 breaths/min, and blood pressure 124/76 mm Hg. The client suddenly spikes a fever to 103°F. Which of the following respiratory rates would the nurse anticipate as part of the body’s response to the change in client status?

Correct answer: D

Rationale: When a client experiences a fever, there is an increase in body temperature, leading to a higher metabolic rate and oxygen demand. As a result, the respiratory rate typically increases to meet the body's increased oxygen needs. Therefore, in response to the fever spike from 98°F to 103°F, the nurse would anticipate a higher respiratory rate. Choices A, B, and C are incorrect because a decrease in body temperature, not an increase as seen in fever, would lead to a decrease in respiratory rate to conserve energy and oxygen consumption.

5. 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.

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