Correct Answer: B

Rationale: The correct action for the nurse to take when caring for a client with stomatitis due to chemotherapy is to encourage the client to eat soft foods. Soft foods help prevent further irritation to the already inflamed and sore oral mucosa. Providing lemon-glycerin swabs may further irritate the mucosa due to the acidic nature of lemon. Avoiding toothpaste is advisable as many toothpaste products contain ingredients that can aggravate stomatitis. Instructing the client to use a mouthwash containing alcohol is contraindicated as alcohol-based mouthwashes can be too harsh and drying for the already sensitive oral tissues.

Correct Answer: B

Rationale: Performing a wound culture before administering antibiotics is crucial when managing a client with a wound infection. This step helps identify the specific pathogens causing the infection, allowing for the prescription of the most effective antibiotics. Changing the wound dressing every 24 hours (Choice A) is important for wound care but not the priority when an infection is present. Cleansing the wound with alcohol-based solutions (Choice C) can be too harsh and may delay wound healing. Applying a wet-to-dry dressing (Choice D) is not recommended for infected wounds as it can cause trauma to the wound bed during dressing changes.

Correct Answer: A

Rationale: Hypokalemia is managed by administering potassium supplements to correct the low potassium levels in the body. Monitoring the ECG is essential because low potassium levels can lead to cardiac arrhythmias. Choice B is incorrect as restricting fluid intake and providing a high-sodium diet are not appropriate for managing hypokalemia. Choice C is incorrect because hypokalemia involves low potassium levels, not sodium levels, and insulin therapy does not directly address this issue. Choice D is incorrect as calcium supplements are not indicated for hypokalemia, and monitoring for hyperkalemia is not relevant in this case.

Correct Answer: B

Rationale: The correct answer is to cleanse the wound from the center outwards. This technique helps reduce the risk of contamination by pushing debris away from the wound. Option A, wearing sterile gloves, is important for infection control but not specifically related to wound irrigation. Option C, keeping the wound dry, is not suitable for wound irrigation, which often involves using solutions to clean the wound. Option D, applying an antimicrobial ointment, is not typically done during wound irrigation as the focus is on cleansing the wound.

Correct Answer: A

Rationale: Postoperative pain is commonly caused by the surgical incision and muscle tension. The correct answer is A. Surgical incisions cause tissue damage, triggering pain responses. Muscle tension can result from factors like positioning during surgery or guarding due to pain. Managing postoperative pain caused by surgical incisions and muscle tension involves the use of analgesics to alleviate discomfort. Choices B, C, and D are incorrect. Nerve damage and wound complications may also cause pain but are not as common as surgical incisions and muscle tension. Hypotension and respiratory issues are not direct causes of postoperative pain. Infection at the incision site can lead to pain, but it is a specific complication rather than a common cause of postoperative pain.