Correct Answer: C

Rationale: Red Man Syndrome is a common adverse effect of vancomycin characterized by flushing and rash. It is not related to nephrotoxicity, hepatotoxicity, or diarrhea. Monitoring for this reaction allows for prompt intervention to prevent severe complications.

Correct Answer: B

Rationale: The nurse should obtain the blood sample for the peak serum level at 1030. This timing allows for 30 minutes to elapse after the completion of the 1-hour IV infusion, which is the recommended window for obtaining the peak serum level of gentamicin.

Correct Answer: D

Rationale: During a chest pain episode, the client should take one nitroglycerin tablet sublingually every 5 minutes up to a total of three doses. If chest pain persists after three doses, emergency medical attention should be sought. Nitroglycerin should not be swallowed but allowed to dissolve under the tongue for rapid absorption. Storing the medication in a cool, dry place helps maintain its effectiveness.

Correct Answer: A

Rationale: An aPTT of 90 seconds is above the therapeutic range for heparin, which typically falls between 60-80 seconds. This indicates that the current heparin dose is too high, and the infusion rate should be decreased to avoid excessive anticoagulation and the risk of bleeding. Monitoring aPTT is crucial in adjusting heparin therapy to maintain it within the therapeutic range.

Correct Answer: A

Rationale: Mesna, an uroprotectant agent, is administered with nitrogen mustard chemotherapy drugs like Cyclophosphamide to prevent hemorrhagic cystitis, a common adverse effect. Mesna works by binding to and inactivating the toxic metabolites of Cyclophosphamide in the bladder, thereby reducing the risk of bladder toxicity.