Correct Answer: A

Rationale: The correct instruction is to avoid alcohol while taking Metronidazole. This is crucial to prevent a disulfiram-like reaction, which can result in severe nausea and vomiting. Alcohol should be avoided for at least 48 hours after completing the medication course as well.

Correct Answer: B

Rationale: Abruptly stopping prednisone can result in adrenocortical insufficiency due to suppression of the adrenal glands. Gradually tapering the dose helps the body to adjust and resume its natural cortisol production, preventing adrenal insufficiency.

Correct Answer: A

Rationale: The nurse should inquire about the client's use of herbal teas because they often contain caffeine, which can impact medication biotransformation. This information is crucial to ensure the safe and effective administration of medications and to prevent potential drug interactions.

Correct Answer: B

Rationale: The correct answer is B. Visual disturbances, such as blurred vision or seeing halos, can be a sign of digoxin toxicity. It is crucial for the client to report any changes in vision to their healthcare provider promptly to prevent serious complications.

Correct Answer: D

Rationale: When educating a client about Bisacodyl suppositories, it is important to include information about the common side effects. Rectal burning is a frequent side effect that can occur after using Bisacodyl suppositories, so the client should be informed to expect this discomfort. The onset of action for Bisacodyl suppositories is typically within 15 to 60 minutes, so the client should expect results relatively quickly, not in 6 to 12 hours. There is no specific instruction to insert the suppository after breakfast, and keeping the suppository in the refrigerator is not necessary.