Correct Answer: A

Rationale: The correct answer is to insert the enema tube 4 inches. Enema tubing must be passed beyond the internal sphincter, which is typically around 4 inches in an adult. Inserting the tube only 2 inches is not far enough to reach this point. On the other hand, inserting the tube 6 or 8 inches is too far and might cause trauma to the bowel, which is unnecessary for a flatus-reducing enema. Therefore, the correct insertion depth of the enema tube is crucial to ensure effectiveness and safety in providing the intended treatment.

Correct Answer: A

Rationale: The least appropriate assignment for a nursing assistant would be assisting a client with dysphagia in eating. This task requires specialized skills and knowledge to prevent complications such as choking and aspiration. Ambulating a client with Parkinson's disease, providing hygiene to a client with dementia, and assisting a client with an above-the-knee amputation in showering are tasks that a nursing assistant can safely perform without significant risk of complications. Assisting a client with dysphagia in eating involves higher risks and requires specific training, making it the least appropriate choice for a nursing assistant.

Correct Answer: D

Rationale: Taking extended lunch breaks is an unacceptable behavior, especially when it affects client care. The appropriate way for the nurse to deal with this situation is to meet with the nursing assistant to discuss the behavior and initiate problem-solving measures. This direct approach allows for open communication and the opportunity to address the issue effectively. Ignoring the situation (Choice A), asking other staff members to cover (Choice C), or documenting the problem in the nursing assistant's personnel file (Choice B) are not effective solutions. Ignoring the behavior does not address the issue, asking others to cover may not solve the problem at its root, and documenting the problem should come after attempting to resolve the issue through communication and problem-solving first.

Correct Answer: C

Rationale: The correct answer is to assess the nail beds and the tissue surrounding the nails. This assessment is crucial to identify abnormal discoloration, lesions, paronychia, dryness, breaks in the skin, pressure areas, or any other unusual appearances. Choice A is incorrect as a full-body assessment is broader and not specific to nail and foot care. Choice B is incorrect as lab work is not directly related to nail and foot assessments. Choice D is incorrect as it focuses only on foot corns and calluses, neglecting other important aspects of nail and foot care.

Correct Answer: B

Rationale: Monitoring Serum Vancomycin levels is essential to determine the drug's therapeutic range, ensuring optimal effectiveness while avoiding toxicity. Peak levels indicate the drug's highest concentration, while trough levels represent the lowest concentration before the next dose. Assessing renal function is typically done using creatinine, BUN, or creatinine clearance tests, not Serum Vancomycin levels. Evaluating antibiotic resistance involves sensitivity testing, not monitoring Vancomycin levels. Therefore, the correct answer is to determine the therapeutic range.