Correct Answer: C

Rationale: The correct answer is C: 'Wear compression stockings daily.' Wearing compression stockings is essential after knee surgery to prevent venous stasis and reduce the risk of blood clots. Choice A is incorrect as crossing legs when sitting can increase the risk of blood clots. Choice B is incorrect because performing range-of-motion exercises every 4 hours may not be suitable for all clients post total knee arthroplasty. Choice D is incorrect as applying heat to the incision site can increase the risk of infection.

Correct Answer: D

Rationale: Clients diagnosed with tuberculosis should be placed in a negative pressure room to prevent the spread of airborne pathogens. Option A is incorrect because administering isoniazid is a treatment for tuberculosis, not a preventive measure related to infection control. Option B is incorrect as droplet isolation is used for diseases transmitted through respiratory droplets, not airborne pathogens like tuberculosis. Option C is incorrect as wearing a surgical mask is not sufficient to prevent the spread of tuberculosis in healthcare settings; placing the client in a negative pressure room is the most effective measure.

Correct Answer: B

Rationale: The correct answer is B: 'Avoid lying down after meals.' This instruction is important for clients with GERD to prevent acid reflux. Lying down after meals can worsen GERD symptoms by allowing stomach acid to flow back into the esophagus. Choices A, C, and D are incorrect. Choice A is incorrect because lying flat after meals can increase the risk of acid reflux. Choice C is incorrect because hot liquids may aggravate GERD symptoms. Choice D is incorrect because consuming a high-carbohydrate snack at bedtime can also trigger acid reflux in individuals with GERD.

Correct Answer: C

Rationale: The correct answer is C: 'Wear compression stockings daily.' Wearing compression stockings is essential after knee surgery to prevent venous stasis and reduce the risk of blood clots. Choice A is incorrect as crossing legs when sitting can increase the risk of blood clots. Choice B is incorrect because performing range-of-motion exercises every 4 hours may not be suitable for all clients post total knee arthroplasty. Choice D is incorrect as applying heat to the incision site can increase the risk of infection.

Correct Answer: A

Rationale: The correct answer is to monitor vital signs post-surgery. Vital signs provide crucial information about a patient's physiological status, helping detect early signs of complications such as shock, bleeding, or infection. Checking the surgical site for bleeding is important but falls secondary to monitoring vital signs, which give a broader overview of the patient's condition. Checking for abnormal breath sounds and skin color are also important assessments, but they are not as immediate and general as monitoring vital signs in detecting various post-surgical complications.