Correct Answer: D

Rationale: The nurse should prioritize performing a wound culture before administering antibiotics to ensure appropriate treatment. This step helps identify the specific infecting organism and its susceptibility to different antibiotics, guiding effective antibiotic therapy. Changing the dressing daily (Choice A) is important but comes after assessing the infection and initiating appropriate treatment. Cleansing the wound with an antiseptic solution (Choice B) and applying a wet-to-dry dressing (Choice C) are interventions that may be necessary but are secondary to determining the most suitable antibiotic therapy based on the wound culture results.

Correct Answer: C

Rationale: The correct intervention for a client experiencing chronic pain is to teach relaxation techniques, as it helps in managing pain more effectively by reducing stress and anxiety. Distractions like television (Choice A) may offer temporary relief but do not address the root cause of chronic pain. Administering pain medication around the clock (Choice B) may lead to dependency and not promote long-term pain management. While massage therapy (Choice D) can be beneficial, teaching relaxation techniques (Choice C) is more directly focused on empowering the client to manage their pain independently.

Correct Answer: B

Rationale: Corrected Rationale: Monitoring blood glucose levels is crucial in clients receiving TPN because the solution has a high glucose content. This monitoring helps prevent hyperglycemia and allows for timely adjustments in the TPN formulation if needed. Monitoring the client's temperature (Choice A) is not directly related to TPN administration. Administering insulin (Choice C) should be based on blood glucose levels and the healthcare provider's orders; it is not a standard intervention for all clients on TPN. Monitoring daily fluid intake (Choice D) is important for overall fluid balance but is not as critical as monitoring blood glucose levels specifically for clients on TPN.

Correct Answer: A

Rationale: The correct answer is A: Heart rate 56/min. Metoprolol, a beta blocker, should be withheld if the client's heart rate is below 60/min to prevent further bradycardia. Choices B, C, and D are within normal ranges and do not indicate a need to withhold metoprolol.

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.