Correct Answer: C

Rationale: Vision problems are a characteristic symptom of multiple sclerosis (MS) due to demyelination of the optic nerve. This can lead to issues such as optic neuritis, blurred vision, double vision, or even total vision loss. Muscle atrophy (Choice A) is not a primary symptom of MS but can occur as a secondary effect of decreased mobility. Severe pain (Choice B) is not a typical symptom of MS, though some individuals may experience pain related to muscle spasms or other factors. Hearing loss (Choice D) is not commonly associated with MS unless there is an unrelated concurrent condition affecting the auditory system.

Correct Answer: C

Rationale: CRP is a marker of inflammation, which is elevated in cardiovascular disease. Statins and aspirin help lower CRP and reduce the risk of heart attacks and strokes.

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.

Correct Answer: B

Rationale: The correct answer is B: Increased urine output. Furosemide is a loop diuretic that works by inhibiting the reabsorption of sodium and chloride in the ascending loop of Henle in the kidneys, leading to increased urine production. This diuretic effect helps to reduce fluid volume in the body, making it an expected outcome when a client is receiving furosemide. Choice A, increased blood pressure, is incorrect because furosemide typically causes a decrease in blood pressure due to its diuretic effect. Choice C, decreased pain, and choice D, decreased premature ventricular contractions, are unrelated to the pharmacological action of furosemide.

Correct Answer: C

Rationale: Gangrene refers to dead, blackened tissue, often a result of chronic ischemia in clients with peripheral vascular disease. Atrophy (Choice A) is the wasting away or decrease in size of tissue or organ. Contraction (Choice B) refers to the shortening or tightening of a muscle or other body part. Rubor (Choice D) is a red discoloration of the skin, often associated with inflammation or poor circulation, but not typically presenting as blackening like gangrene.