Correct Answer: A

Rationale: Aripiprazole is known to cause weight gain in patients, so monitoring for changes in weight is essential to assess for this potential side effect and intervene accordingly.

Correct Answer: D

Rationale: Epigastric pain unrelieved by antacids is a concerning symptom that may indicate a more serious underlying condition such as a perforated ulcer. This symptom requires immediate medical attention to prevent further complications.

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: The correct answer is A: Weight gain. Olanzapine is known to cause weight gain as a common side effect. This weight gain can increase the risk of metabolic issues such as diabetes and dyslipidemia. Monitoring the client's weight regularly is essential to detect and address any weight changes promptly.

Correct Answer: B

Rationale: Magnesium and calcium can accumulate in patients with renal failure, leading to toxicity.