Correct Answer: D

Rationale: Re-assessing the client's situation before providing care is the most appropriate action in this scenario. By re-evaluating the client, the nurse can better understand the cause of the anxiety and tailor the care accordingly. Diverting the client's attention (Choice A) may not address the underlying issue causing anxiety. Calling for additional help (Choice B) is not the initial step required unless there is an urgent need. Documenting the planned action (Choice C) should come after reassessing the client to ensure accuracy and relevance.

Correct Answer: C

Rationale: An increasing pulse rate can be an early sign of poor oxygenation as the body tries to compensate. Abnormal breath sounds (choice A) can indicate respiratory issues, but they may not always be an early sign of poor oxygenation. Cyanosis of the lips (choice B) is a late sign of inadequate oxygenation. A pulse oximeter reading of 92% (choice D) indicates mild hypoxemia but may not be considered an early indication of poor oxygenation.

Correct Answer: D

Rationale: The correct course of action for the nurse is to determine which staff members have already been fitted for particulate filter masks before changing assignments. This ensures safety and compliance with infection control protocols. Option A is incorrect as wearing a standard face mask before being fitted for a filter mask does not address compliance with droplet precautions. Option B is incorrect because the priority is to ensure all staff members have appropriate equipment before providing care. Option C is incorrect as a standard mask may not offer sufficient protection when dealing with clients under droplet precautions.

Correct Answer: C

Rationale: The correct answer is to use sterile technique when changing the dressing. This practice is essential for preventing infections that can compromise the patency of the PICC line. While flushing the catheter with heparin solution helps prevent clot formation, it does not directly maintain patency. Changing the dressing daily is important for hygiene but does not have a direct impact on catheter patency. Keeping the insertion site dry is crucial to prevent infections but does not specifically address patency maintenance.

Correct Answer: A

Rationale: An oil retention enema containing mineral oil is the most suitable choice to help soften and loosen a fecal impaction before digital removal. Mineral oil lubricates and softens the stool, facilitating passage. Saline enemas draw water into the colon to promote bowel movements but may not effectively soften a fecal impaction. Soapy water enemas are primarily for cleansing, not softening stool. Hypertonic enemas eliminate fluid from the body and are not appropriate for loosening fecal impactions.