Correct Answer: A

Rationale: The correct answer is A: Vision changes. This is crucial to report immediately because tamoxifen can cause serious eye problems such as retinopathy. Vision changes could indicate a potentially serious adverse reaction that requires prompt medical attention to prevent permanent damage. Headache, hearing loss, and anorexia are not typically associated with tamoxifen use and are less urgent in nature. Reporting vision changes promptly can help prevent irreversible harm and ensure timely intervention.

Correct Answer: D

Rationale: The correct answer is D: leukocytosis. Carbamazepine can cause bone marrow suppression, leading to leukocytosis. Monitoring for elevated white blood cell count is essential to detect this potential complication early. A: Adult respiratory distress syndrome is not a common complication of carbamazepine. B: Elevated levels of phenytoin is not a direct complication of carbamazepine use. C: Diplopia is a common side effect of carbamazepine, not a potential complication like leukocytosis.

Correct Answer: D

Rationale: The correct answer is D, assess vital signs, as it is crucial to monitor the client's hemodynamic stability and response to treatment during the critical initial 24 hours of Addisonian crisis. Vital signs such as blood pressure, heart rate, and respiratory rate provide valuable information about the client's condition and response to therapy. Weighing the client (choice A) and testing urine for ketones (choice C) may be important but not as immediately critical as monitoring vital signs. Administering oral hydrocortisone (choice B) is essential for treatment but does not require frequent administration within the first 24 hours.

Correct Answer: B

Rationale: The correct answer is B: Turn on the affected side. This position helps to promote the closure of the puncture site in the lung, reducing the risk of fluid leakage and pneumothorax. Placing the client flat in bed (A) may not allow gravity to assist in the closure of the puncture site. Turning on the unaffected side (C) may not effectively prevent fluid leakage from the puncture site. Bed rest (D) is a general instruction and does not specifically address the prevention of fluid leakage after thoracentesis.

Correct Answer: C

Rationale: The correct answer is C: Hypoglycemia. At 4:30 p.m., after taking the morning insulin, the client's blood sugar may have dropped too low, leading to symptoms like headache, sweating, tremor, pallor, and nervousness. Regular insulin and NPH insulin peak at different times, causing a potential mismatch in insulin action, leading to hypoglycemia. Hyperglycemia (A) would present with different symptoms like increased thirst and urination. Hyperuricemia (B) is an excess of uric acid in the blood and does not typically present with these symptoms. Hypochondria (D) is a psychological condition and not related to the client's physical symptoms.