Correct Answer: C

Rationale: Contact precautions are necessary when performing postmortem care on a client with MRSA to prevent the spread of infection. Contact precautions involve using barriers like gloves and gowns to limit direct contact with the deceased individual's body fluids and tissues. Airborne precautions are used for pathogens that are transmitted through the air, like tuberculosis. Droplet precautions are for pathogens that are transmitted through respiratory droplets, such as influenza. Compromised host precautions are not a recognized standard precaution type and are not applicable in this scenario.

Correct Answer: D

Rationale: The correct answer is D: Contact precautions. When a client has an abdominal wound with purulent drainage, contact precautions are necessary to prevent the spread of infection through direct contact. Protective environment precautions are used for immunocompromised clients, airborne precautions are for diseases transmitted by airborne particles, and droplet precautions are for diseases transmitted by respiratory droplets. In this case, the focus is on preventing direct contact transmission, making contact precautions the most appropriate choice. Protective environment, airborne, and droplet precautions are not indicated in this scenario because the primary concern is the direct contact transmission of pathogens through the wound drainage.

Correct Answer: D

Rationale: The client's previous dietary knowledge is the most critical factor in determining the ability to learn new dietary habits. Understanding the client's existing dietary knowledge helps tailor the teaching to build upon what they already know. While client involvement in planning changes can increase adherence and motivation, the foundational knowledge is essential for effective learning. The cost of dietary changes and the availability of low-sodium foods are important considerations but not as crucial as the client's existing knowledge.

Correct Answer: B

Rationale: In a client with chronic kidney disease, elevated serum potassium levels (hyperkalemia) are the most concerning finding. Hyperkalemia can lead to life-threatening cardiac dysrhythmias. Monitoring and managing serum potassium levels are crucial in patients with kidney disease to prevent severe complications. While elevated creatinine (Choice A) and BUN (Choice C) are indicative of impaired kidney function, hyperkalemia poses a more immediate threat to the client's health. Hemoglobin levels (Choice D) can be affected by chronic kidney disease but are not as acutely dangerous as severe hyperkalemia.

Correct Answer: C

Rationale: Offering the client a pain scale is the most appropriate action to determine the intensity of the client's pain. Pain scales help quantify the intensity of pain, providing a standardized way to assess and compare pain levels. Asking about precipitating factors (choice A) may help identify triggers but does not directly measure pain intensity. Questioning about the location of pain (choice B) helps with localization but not with quantifying intensity. Using open-ended questions (choice D) may provide insights into the quality and experience of pain but does not provide a standardized measure of intensity.