Correct Answer: A

Rationale: The correct answer is A: Liver function tests. Atorvastatin, a medication commonly used to lower cholesterol levels, can potentially cause liver damage as a side effect. Monitoring liver function tests is essential to detect any abnormalities early. Choices B, C, and D are incorrect because atorvastatin is not known to directly impact potassium levels, blood glucose levels, or serum calcium levels. While these parameters may be monitored for other reasons, the priority when administering atorvastatin is to monitor liver function due to the risk of hepatotoxicity.

Correct Answer: B

Rationale: The correct answer is B: Respiratory status. When caring for a client with asthma, it is essential to monitor their respiratory status to detect any changes in breathing or signs of airway obstruction. Monitoring heart rate (choice A) may be important in some situations but is not the priority when managing asthma. Blood glucose levels (choice C) and liver function (choice D) are not directly related to asthma and would not be the primary focus of monitoring for a client with this condition.

Correct Answer: C

Rationale: Corrected Rationale: Serum phenytoin levels should be regularly monitored to prevent toxicity because the therapeutic range is narrow. Monitoring blood pressure (choice A), complete blood count (choice B), and liver function tests (choice D) are not directly related to preventing phenytoin toxicity.

Correct Answer: A

Rationale: The correct answer is A: Avoid potassium-rich foods. Spironolactone can lead to hyperkalemia, a condition characterized by high levels of potassium in the blood. To prevent this complication, clients taking spironolactone should avoid potassium-rich foods. Choice B is incorrect because spironolactone can be taken with or without food. Choice C is not directly related to spironolactone use, as toxicity monitoring is not a specific concern with this medication. Choice D is incorrect because discontinuing the medication solely based on elevated potassium levels may not be necessary; instead, dosage adjustments or potassium restriction are often more appropriate.

Correct Answer: A

Rationale: The correct answer is A: 'Eliminate areas of standing water.' Standing water provides breeding grounds for mosquitoes, which spread West Nile virus. By eliminating standing water, individuals can reduce the risk of mosquito breeding and the transmission of the virus. Choices B, C, and D are incorrect. Wearing a mask when outdoors, ensuring food is cooked thoroughly, and avoiding contact with sick individuals are not directly related to primary prevention strategies for West Nile virus.