Correct Answer: D

Rationale: The nurse should monitor the client for hemorrhagic cystitis when receiving cyclophosphamide due to its potential to cause bladder irritation and lead to this serious adverse effect. It is essential to assess for symptoms such as hematuria, dysuria, and flank pain.

Correct Answer: A

Rationale: St. John's wort should be avoided by clients taking Warfarin as it can reduce the medication's effectiveness. The nurse should also advise the client to avoid other supplements that may interact with Warfarin, such as garlic and ginseng.

Correct Answer: A

Rationale: Losartan, an angiotensin II receptor blocker (ARB), can cause hyperkalemia. The nurse should monitor the client's serum potassium levels closely because Losartan can increase potassium levels, potentially leading to serious complications such as arrhythmias.

Correct Answer: B

Rationale: A 17-year-old can be immunized for influenza with the LAIV via nasal spray. A hypersensitivity to penicillin is not a contraindication for an influenza immunization. Nasal spray influenza vaccine is generally recommended for healthy individuals between 2 and 49 years old.

Correct Answer: C

Rationale: Omeprazole or another proton pump inhibitor is commonly prescribed for clients taking dabigatran who experience abdominal pain and other gastrointestinal adverse effects associated with dabigatran use. Proton pump inhibitors help alleviate these symptoms by reducing gastric acid secretion, which can contribute to gastrointestinal discomfort.