Correct Answer: A

Rationale: A WBC count of 2,900/mm3 indicates leukopenia, which is a serious side effect of clozapine and contraindicates its use. Leukopenia is a significant concern with clozapine therapy due to the risk of agranulocytosis, a potentially life-threatening condition. Monitoring the WBC count is crucial to detect this adverse effect early. The other options (B, C, and D) are within normal ranges and not contraindications for administering clozapine.

Correct Answer: A

Rationale: The correct answer is A: Lamb. Lamb is high in saturated fat, which is linked to an increased risk of developing cancer. Choice B (Poultry) is a lean protein source and is not associated with an increased cancer risk. Choice C (Tuna) is a good source of omega-3 fatty acids, which have anti-inflammatory properties that may reduce cancer risk. Choice D (Beef) is also high in saturated fat like lamb, making it a poor choice for cancer prevention.

Correct Answer: C

Rationale: The correct instruction for the client with left-leg weakness using a cane is to maintain two points of support on the floor. This ensures stability and balance while walking. Choice A is incorrect because the cane should be used on the strong side of the body to provide additional support. Choice B is incorrect as the cane and the weak leg should move together for support. Choice D is incorrect as advancing the cane too far with each step may compromise balance and stability.

Correct Answer: C

Rationale: The correct answer is C: Administer an incentive spirometer. Using an incentive spirometer helps prevent atelectasis by encouraging lung expansion after surgery. Encouraging deep breathing exercises (choice A) is beneficial but may not be as effective as an incentive spirometer. Encouraging the client to cough (choice B) helps with airway clearance but does not directly prevent atelectasis. Assisting the client to ambulate (choice D) is important for preventing complications such as deep vein thrombosis, but it is not the most effective intervention for preventing atelectasis.

Correct Answer: A

Rationale: The correct way to assess a patient with fluid overload is by monitoring weight and assessing for edema. Weight monitoring helps in detecting fluid retention, and edema is a visible sign of excess fluid accumulation. Although monitoring blood pressure and auscultating lung sounds are important assessments in heart failure, they are not specific to fluid overload. Assessing for jugular venous distention is more indicative of right-sided heart failure rather than fluid overload. Monitoring oxygen saturation and checking for fluid retention are not primary assessments for fluid overload.