Correct Answer: B

Rationale: Performing a wound culture before applying antibiotics is crucial for determining the specific type of infection present and selecting the most effective antibiotic treatment. Changing the dressing daily (Choice A) is a routine wound care practice but may not address the root cause of the infection. Cleansing the wound with alcohol-based solutions (Choice C) can be too harsh and delay wound healing. Applying a wet-to-dry dressing (Choice D) is an outdated practice that can cause trauma to the wound bed and hinder the healing process.

Correct Answer: C

Rationale: The correct action for the nurse to take when caring for a client with a prescription for wound irrigation is to cleanse the wound from the center outwards. This technique helps prevent contamination by pushing debris away from the wound rather than into it. Choice A is incorrect because wearing sterile gloves is important during wound care but not specifically mentioned for wound irrigation. Choice B is incorrect because warming the irrigation solution to a specific temperature is not a standard recommendation and can potentially harm the client. Choice D is incorrect because the size of the syringe may vary based on the wound size and depth, so using a 20 mL syringe is not a universal guideline.

Correct Answer: A

Rationale: The correct answer is A: Serum glucose level. In Cushing's disease, there is an excess production of cortisol, leading to hyperglycemia. This results in an increase in serum glucose levels. Choices B, C, and D are incorrect because Cushing's disease does not directly affect serum calcium levels, lymphocyte count, or serum potassium levels.

Correct Answer: B

Rationale: The correct answer is B because taking warfarin later on the same day if a dose is missed helps maintain therapeutic levels. Choice A is incorrect because warfarin should be taken with food to enhance absorption. Choice C is incorrect as skipping a dose can lead to fluctuations in warfarin levels. Choice D is incorrect as taking an additional dose can increase the risk of bleeding.

Correct Answer: A

Rationale: The correct answer is A: 'Use sterile gloves and a clean dressing.' Aseptic technique in wound care requires the use of sterile gloves to prevent infection. Choice B is incorrect as the method of application does not primarily focus on maintaining asepsis. Choice C, while important for infection control, is not specific to aseptic technique in wound care. Choice D is incorrect because using a single clean glove does not ensure the level of sterility needed for aseptic wound care.