Correct Answer: A

Rationale: Isotretinoin is a metabolite of vitamin A, which can lead to toxicity when taken together. Therefore, it is crucial to avoid concurrent use of vitamin A supplements with isotretinoin. Contacting the HCP to discuss discontinuing vitamin A supplements is important to prevent potential adverse effects.

Correct Answer: C

Rationale: Alcohol lowers the seizure threshold and should be avoided by individuals taking anticonvulsants.

Correct Answer: B

Rationale: Gentamicin (Garamycin) is an aminoglycoside antibiotic known to cause ototoxicity, which can manifest as hearing loss. Hearing loss is a serious adverse effect that should be reported promptly to the healthcare provider to prevent further complications or adjust the treatment regimen.

Correct Answer: C

Rationale: The nurse should instruct the client to apply the nitroglycerin (Nitro-Dur) transdermal patch at the same time each day to ensure consistent blood levels. It is essential to apply the patch to a hairless area of the skin for proper absorption. The patch can generally be left on during a shower. The patch is usually worn for 12-14 hours to allow for a nitrate-free period, which helps reduce tolerance to the medication.

Correct Answer: D

Rationale: Meperidine hydrochloride (Demerol) is an opioid analgesic that can cause various side effects. Common side effects include respiratory depression, orthostatic hypotension, tachycardia, drowsiness, constipation, and urinary retention. Therefore, the nurse should monitor for urinary retention as a potential side effect of Meperidine hydrochloride.