Correct Answer: B

Rationale: The correct answer is B. A urine output of 20 mL/hour is a sign of magnesium toxicity because decreased urine output can lead to accumulation of magnesium. Choices A, C, and D are not indicators of magnesium toxicity. Elevated blood glucose, high systolic blood pressure, and normal BUN levels do not specifically point towards magnesium toxicity.

Correct Answer: A

Rationale: The correct answer is A: Constricted pupils. Constricted pupils are a classic sign of opioid intoxication, including heroin. Opioids like heroin cause the pupils to constrict due to their effect on the autonomic nervous system. Dilated pupils, increased reflexes, and elevated blood pressure are not typically associated with opioid intoxication but may be seen with other substances or conditions.

Correct Answer: A

Rationale: The correct answer is A: WBC 3,000/mm³. A WBC count of 3,000/mm³ indicates neutropenia, which is a condition characterized by a low level of white blood cells, specifically neutrophils. Neutropenia increases the risk of infection and requires immediate medical attention, especially in clients undergoing chemotherapy. Reporting this result to the provider promptly is crucial for further evaluation and intervention. Choices B, C, and D are within normal ranges and do not pose an immediate risk to the client's health. Hemoglobin of 12 g/dL, platelet count of 250,000/mm³, and serum sodium of 140 mEq/L are all normal values and would not typically require immediate reporting unless there are specific concerns related to the individual client's condition.

Correct Answer: C

Rationale: The correct instruction for a patient starting radiation therapy for esophageal cancer is to wear clothing over the area of radiation treatment. This helps to prevent irritation and protect the skin. Removing dye markings after each treatment (choice A) is unnecessary and not typically part of the patient's self-care. Applying a warm compress (choice B) can exacerbate skin irritation caused by radiation. Using a washcloth to bathe the treatment area (choice D) can potentially irritate the skin further, making it important to avoid.

Correct Answer: C

Rationale: The correct answer is C: 'Rice with black beans.' Plant-based proteins such as beans are recommended for clients with hepatic encephalopathy to reduce ammonia production from animal proteins. Cottage cheese (choice A), tuna salad (choice B), and a three-egg omelet (choice D) are high in animal proteins, which can contribute to increased ammonia levels in hepatic encephalopathy, making them less suitable dietary choices for these clients.