Correct Answer: D

Rationale: Performing nostril and mouth care is a non-invasive task that can be safely delegated to an unlicensed assistive personnel (UAP). Observing the type and amount of nasogastric tube drainage requires assessment skills and understanding of potential complications, making it more appropriate for a licensed healthcare professional. Monitoring the client for nausea or other complications involves interpreting client responses and identifying adverse reactions, which also requires a licensed healthcare professional. Irrigating the nasogastric tube with the ordered solution involves a procedure that can impact the client's condition and should be performed by a licensed healthcare professional to prevent complications.

Correct Answer: B

Rationale: A decrease in white blood cell count indicates that the infection is responding to treatment and the client's condition is improving. Monitoring the white blood cell count is a more objective indicator of the body's response to the antibiotics. Choices A, C, and D may also be positive signs, but they are less specific and may vary among individuals. Respiratory rate alone may not be sufficient to indicate improvement, as other factors can influence it. Energy levels and cough characteristics are subjective and may not always correlate with the effectiveness of antibiotic treatment.

Correct Answer: C

Rationale: The correct answer is C: Pasta with marinara sauce. Clients with renal disease following a low-protein diet should opt for lower-protein options. Pasta with marinara sauce is a suitable choice as it is lower in protein compared to grilled chicken, tofu, or salmon. Grilled chicken, tofu, and salmon are higher in protein content and are not ideal for individuals following a low-protein diet for renal disease as they may strain the kidneys.

Correct Answer: C

Rationale: The correct answer is C. Pursed-lip breathing helps control breathing and improves oxygen exchange in clients with COPD. It can ease shortness of breath during activities and should be included in discharge teaching to manage symptoms. Option A is incorrect as adequate fluid intake is important for thinning mucus in COPD. Option B is wrong as physical activity, as tolerated, is beneficial for COPD patients. Option D is also incorrect because changing oxygen flow rate without healthcare provider guidance can be dangerous.

Correct Answer: A

Rationale: All of these tasks fall within the PN's scope of practice, which includes performing surgical dressing changes, taking postoperative vital signs, and administering insulin under supervision. The RN can delegate these tasks to the PN safely. Choice A is the correct answer because all the tasks mentioned are appropriate for delegation to a PN. Choice B should not be assigned to a PN as only RNs should administer insulin. Choice C is suitable for delegation to a PN as obtaining vital signs falls within their scope of practice. Choice D is also appropriate for delegation to a PN as performing surgical dressing changes is within their scope of practice.