Correct Answer: A

Rationale: Administering pain medication before the dressing change is the priority action to help manage the client's pain effectively. This intervention ensures that the client is comfortable during the procedure. Changing the dressing quickly may cause more discomfort to the client. Providing reassurance is important but does not address the immediate pain concern. Using a less painful dressing technique may be helpful, but administering pain medication first is the priority to address the client's pain promptly.

Correct Answer: A

Rationale: The correct answer is A because understanding pain management involves considering non-pharmacological approaches, such as listening to music for relaxation and comfort. Choice B is incorrect as excessive sleep may not be an effective pain management strategy. Choice C is incorrect because pain medication may still be necessary even if pain levels are low. Choice D is not the best answer, as it simply states following the nurse's suggestions without demonstrating an understanding of personalized pain management techniques.

Correct Answer: A

Rationale: The correct answer is to monitor the white blood cell count. Chemotherapy can lead to neutropenia, which is a decrease in white blood cells, particularly neutrophils. Neutropenia increases the risk of infections, making it crucial to monitor the white blood cell count during chemotherapy. Monitoring hemoglobin level is important but not as critical as white blood cell count in this scenario. Serum creatinine and blood glucose levels are not directly impacted by chemotherapy for breast cancer, making them less relevant to monitor in this situation.

Correct Answer: A

Rationale: When a client is receiving 100% oxygen via a partial rebreathing mask, there is a higher risk for oxygen toxicity due to the higher concentration of oxygen delivered. This client should be assessed most frequently for manifestations of oxygen toxicity. Choices B, C, and D are less likely to result in oxygen toxicity compared to 100% oxygen delivery via a partial rebreathing mask.

Correct Answer: A

Rationale: The correct action when checking a client's blood pressure is to apply the cuff above the client's antecubital fossa. Placing the cuff above this area allows for an accurate measurement of blood pressure. Choice B is incorrect because the cuff width should be approximately 40% of the arm circumference, not 60%. Choice C is incorrect as the client's arm should rest at heart level, not above it, to ensure an accurate reading. Choice D is incorrect as the pressure on the client's arm should be released at a rate of 2 to 3 mm per second, not 5 to 6 mm per second.