Correct Answer: A

Rationale: Levothyroxine is a medication used to treat hypothyroidism by supplementing the body with thyroid hormone. If the dosage of levothyroxine is too high, it can cause symptoms of hyperthyroidism, including weight loss. Therefore, weight gain can be a potential side effect of levothyroxine if the dosage is excessive.

Correct Answer: A

Rationale: Tofacitinib is an immunosuppressive medication used in rheumatoid arthritis. Patients taking tofacitinib should avoid live vaccines because the medication can weaken the immune system, making live vaccines potentially harmful. It is essential to educate the client on this to prevent any complications related to live vaccines during their treatment.

Correct Answer: A

Rationale: When a client with bipolar disorder is prescribed quetiapine, the nurse should monitor for weight gain as a potential adverse effect. Quetiapine is known to commonly cause weight gain, which can have implications for the client's overall health. Regular monitoring of weight can help in early detection and management of this side effect.

Correct Answer: B

Rationale: The correct answer is to review the client's serum potassium level before administering furosemide. Furosemide, a loop diuretic, can lead to hypokalemia, making it crucial to assess potassium levels to prevent potential complications like cardiac arrhythmias associated with low potassium levels.

Correct Answer: A

Rationale: When a client with diabetes mellitus type 2 is prescribed linagliptin, the nurse should monitor for pancreatitis as a potential adverse effect. Linagliptin has been associated with rare cases of pancreatitis; therefore, monitoring for signs and symptoms of pancreatitis such as severe abdominal pain, nausea, and vomiting is crucial to ensure timely intervention and management.