Correct Answer: D

Rationale: When administering medication to children, it is crucial to ensure the correct dosage to prevent dosing errors. Double-checking the dosage calculations with another nurse can help verify the accuracy of the prescribed dose, reducing the risk of medication errors. While checking the child's weight (Choice A) is important for dosage calculation, it alone may not ensure the correctness of the dosage. Verifying the medication order with a pharmacist (Choice B) is essential, but it may not directly address the accuracy of dosage calculations. Consulting the child's parents (Choice C) is not a standard practice for verifying medication dosages and should not be solely relied upon for ensuring the correct dosage.

Correct Answer: C

Rationale: Tingling around the mouth is the most concerning finding as it may indicate hypocalcemia, a potential complication after thyroidectomy. Hoarseness of the voice is common due to surgical manipulation, slight swelling at the incision site is expected postoperatively, and mild fever can be a normal inflammatory response. Hypocalcemia after thyroidectomy can lead to serious complications and should be addressed promptly to prevent further issues.

Correct Answer: C

Rationale: Requesting a culture and sensitivity of the wound is the most crucial action in this scenario. This will help identify the specific organism causing the infection and determine its sensitivity to antibiotics, guiding appropriate antibiotic therapy. Option A is less critical as odor alone may not provide enough information about the type of infection. Monitoring the client's white blood cell count (WBC) in option B is important but not as immediate as obtaining a wound culture. Cleansing the wound with a sterile saline solution in option D is necessary but should follow after obtaining the culture results to ensure proper treatment.

Correct Answer: A

Rationale: The correct answer is to instruct the client to increase potassium-rich foods in the diet. Furosemide is a loop diuretic that can cause potassium loss as a side effect. By increasing potassium-rich foods, the client can help prevent hypokalemia, a potential complication of furosemide therapy. Choice B is incorrect because while limiting sodium intake is generally advisable for heart failure, it is not directly related to furosemide use. Choice C is incorrect because fluid intake should be monitored and adjusted based on the individual's condition, but setting a specific limit of 1 liter per day is not a standard recommendation. Choice D is incorrect because furosemide is usually taken in the morning to prevent disturbances in sleep due to increased urination during the night.

Correct Answer: B

Rationale: The most important instruction for a client with tuberculosis (TB) is to take all prescribed medications as directed. This is crucial to prevent the development of drug-resistant TB. While avoiding close contact with others until treatment is complete (Choice A) is important to prevent the spread of TB, ensuring the client completes the prescribed medication regimen is the priority. Scheduling a follow-up appointment (Choice C) is important for monitoring but not as critical as medication adherence. Wearing a mask in public places (Choice D) can help reduce the spread of TB but is not as essential as taking medications as prescribed.