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. The client with chronic renal failure is being educated on dietary restrictions. Which of the following foods should the client avoid?

Correct answer: A

Rationale: The correct answer is A: Bananas. Bananas are high in potassium, and clients with chronic renal failure are often advised to follow a low-potassium diet to prevent hyperkalemia. Oranges and apples are also high in potassium and should be avoided by clients with renal issues. Rice, on the other hand, is low in potassium and is generally considered safe for individuals with chronic renal failure to consume in moderation.

3. A client with cirrhosis develops increasing pedal edema and ascites. What dietary modification is most important for the nurse to teach this client?

Correct answer: D

Rationale: The correct answer is to restrict salt and fluid intake. In clients with cirrhosis presenting with pedal edema and ascites, excessive fluid retention occurs, necessitating the restriction of salt and fluid to alleviate these symptoms. Choice A, avoiding high carbohydrate foods, is not the priority in this situation. Decreasing intake of fat-soluble vitamins (Choice B) is not specifically indicated for managing edema and ascites in cirrhosis. While maintaining an appropriate caloric intake is important, decreasing caloric intake (Choice C) is not the primary focus when addressing fluid retention in cirrhosis.

4. When preparing a client who has had a total laryngectomy for discharge, what instruction is most important for the nurse to include in the discharge teaching?

Correct answer: C

Rationale: The most crucial instruction for a client who has had a total laryngectomy is to carry a medic alert card stating that they are a total neck breather. This is important because if they experience a cardiac arrest, mouth-to-neck breathing may be required. Choice A about carrying suction equipment is not the most critical as the client may not always need it. Choice B is not as essential as having a medic alert card. Choice D is not directly related to the client's safety due to their laryngectomy.

5. A client is unsure of the decision to undergo peritoneal dialysis (PD) and wishes to discuss the advantages of this treatment with the nurse. Which statements by the nurse are accurate regarding PD? (Select all that apply.)

Correct answer: D

Rationale: The correct answer is D, as all the statements are accurate advantages of peritoneal dialysis (PD). Peritoneal dialysis does not require vascular access, offers less restriction on protein and fluids, and provides flexibility in scheduling for the exchanges. Choice A is correct because one of the advantages of PD is not needing vascular access, which is required in hemodialysis. Choice B is correct because PD allows for less dietary restriction compared to hemodialysis. Choice C is correct because PD allows for flexible scheduling of exchanges, providing more independence to the individual undergoing treatment.

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