Correct Answer: C

Rationale: The correct answer is C: 'Use a mechanical lift to move a client.' Using a mechanical lift is an essential ergonomic principle to prevent injury and ensure safe client handling. Choice A is incorrect because standing with feet together when lifting a client can lead to instability and improper weight distribution. Choice B is incorrect as raising the client's head of bed before pulling the client up does not primarily relate to ergonomic principles. Choice D is incorrect because while using a gait belt is important for assisting clients with mobility, it is not specifically related to ergonomic principles for safe handling.

Correct Answer: A

Rationale: The correct answer is A. Children with varicella are contagious until the vesicles crust over, which is important for preventing transmission. Choice B is incorrect as varicella and herpes zoster are caused by different viruses, so the varicella vaccine is given to prevent varicella, not herpes zoster. Choice C is incorrect because varicella is primarily spread through respiratory secretions, so airborne precautions are recommended, not droplet precautions. Choice D is incorrect as children with varicella are contagious even before the first vesicle eruption, not just 4 days before.

Correct Answer: A

Rationale: The correct answer is A: Limit your sodium intake to 2,000 mg per day. Limiting sodium intake helps manage hypertension by reducing fluid retention and lowering blood pressure. Choice B is incorrect because increasing intake of high-fat foods can worsen hypertension by contributing to weight gain and other cardiovascular risks. Choice C is incorrect as green, leafy vegetables are beneficial for hypertension due to their high potassium and other nutrient content. Choice D is incorrect as limiting potassium intake is typically not recommended for hypertension management unless specified by a healthcare provider.

Correct Answer: A

Rationale: The correct answer is A: ''I will need to take this medication for the rest of my life.'' Levothyroxine is a lifelong medication for clients with hypothyroidism and should be taken as prescribed. Choice B is incorrect because levothyroxine should not be taken with antacids as they can interfere with its absorption. Choice C is incorrect as iodine-containing foods do not need to be avoided with levothyroxine. Choice D is incorrect because levothyroxine should be stored at room temperature, not in the refrigerator.

Correct Answer: A

Rationale: The correct answer is A: Serum glucose level. In Cushing's disease, elevated cortisol levels lead to increased gluconeogenesis, insulin resistance, and breakdown of proteins and fats, resulting in elevated blood glucose levels. This is known as hyperglycemia. The other options, including serum calcium level (choice B), lymphocyte count (choice C), and serum potassium level (choice D), are not typically affected by Cushing's disease. Therefore, they are incorrect choices.