Correct Answer: C

Rationale: The correct answer is C: Signs of superinfection. Clindamycin can lead to antibiotic-associated colitis and other superinfections, making it crucial for the nurse to monitor the client for signs of superinfection. Monitoring liver function (choice A) is not typically associated with clindamycin use. Serum potassium levels (choice B) and blood glucose (choice D) are also not directly affected by clindamycin, so they are not the priority for monitoring in this case.

Correct Answer: B

Rationale: The correct answer is B: 'Drink at least 2 liters of water per day.' Clients taking allopurinol should be instructed to drink plenty of water to prevent kidney stones, a potential side effect of the medication. Option A is incorrect because allopurinol is usually taken without regard to meals. Option C is not directly related to the teaching about allopurinol, as it pertains more to dietary management of gout. Option D is also unrelated to allopurinol use for gout.

Correct Answer: B

Rationale: The correct answer is B: 'Take the medication at the same time every day.' Clients should take digoxin at the same time each day to maintain consistent therapeutic levels, enhancing the drug's effectiveness and minimizing fluctuations in blood concentration. Choice A is incorrect because digoxin, as a medication, may actually help in controlling the heart rate. Choice C is incorrect as digoxin should never be stopped abruptly due to the risk of rebound effects and worsening of the condition. Choice D is unrelated to digoxin therapy, as it is more relevant to medications like potassium-sparing diuretics.

Correct Answer: C

Rationale: Edema is a common sign of fluid overload. When the body retains more fluid than it excretes, it can lead to edema, which is swelling caused by excess fluid trapped in body tissues. Weight gain, not weight loss, is typically associated with fluid overload due to the retained fluids. Decreased blood pressure is more commonly associated with dehydration rather than fluid overload. Increased urine output is a sign of the body trying to eliminate excess fluids, which is contrary to the signs of fluid overload.

Correct Answer: A

Rationale: The correct answer is A: Gastrointestinal upset. Metformin can cause gastrointestinal upset, especially when first starting therapy. It is important to take it with food to reduce these effects. Increased appetite (choice B) and weight loss (choice C) are not common side effects of metformin but may occur due to improved blood sugar control. Frequent urination (choice D) is a symptom of uncontrolled diabetes and not a side effect of metformin.