Correct Answer: C

Rationale: A serum potassium level of 2.5 mEq/L is critically low, indicating severe hypokalemia. In this situation, it is essential for the nurse to inform the healthcare provider promptly about the need for potassium replacement. Administering potassium supplements orally or increasing dietary potassium intake is not appropriate in cases of critically low potassium levels as immediate and precise replacement is necessary. Monitoring the client's ECG continuously is important in severe cases of hypokalemia, but the priority action should be to inform the healthcare provider for further management and treatment.

Correct Answer: C

Rationale: To deliver 1,000 units/hour from a solution with 25,000 units in 500 ml, the rate should be set to 20 ml/hour. This is calculated by determining that the solution has 50 units/ml (25,000 units / 500 ml = 50 units/ml) and then dividing the required 1,000 units/hour by 50 units/ml, resulting in 20 ml/hour. Therefore, the nurse should program the infusion pump to deliver heparin at 20 ml/hour. Choices A, B, and D are incorrect as they do not align with the calculated rate of 20 ml/hour.

Correct Answer: D

Rationale: In this scenario, the nurse should provide the client with oral swabs to moisten his mouth. This intervention helps alleviate the client's thirst without increasing fluid intake, which is essential in managing AKI. Removing all sources of liquids from the client's room (Choice A) may not address the underlying issue of thirst and could lead to increased frustration. Allowing the family to give the client ice chips (Choice B) would add to the client's fluid intake, contradicting the restriction. Restricting family visiting (Choice C) is not necessary and does not directly address the client's thirst.

Correct Answer: A

Rationale: The correct answer is Agranulocytosis. Methimazole, used to treat hyperthyroidism, can lead to agranulocytosis, a severe decrease in white blood cells. This condition increases the risk of infections and requires immediate medical attention. Hypoglycemia (choice B) is not a common adverse effect of methimazole. Bradycardia (choice C) is unlikely as methimazole tends to have minimal effects on heart rate. Hypercalcemia (choice D) is not associated with methimazole use.

Correct Answer: B

Rationale: The correct answer is B: Skin impairment. Nephrosis is characterized by gross edema, making skin care a priority. Skin impairment can result from the edema and needs close monitoring and management. While nutritional deficit and injury are important considerations in patient care, they are not the priority when dealing with a child with nephrosis. Impaired body image is not typically a priority in the immediate care of a young child with nephrosis.