Correct Answer: C

Rationale: The correct answer is C, the 86-year-old postoperative from colonic resection. This patient is at the greatest risk for delirium due to being elderly, having undergone surgery, and having a history of being from a nursing home. These factors contribute to an increased susceptibility to delirium. A: The 36-year-old with alcohol withdrawal may be at risk for delirium tremens, but the older age of the patient in choice C places them at higher risk. B: The 54-year-old with an elevated creatinine level postoperative is at risk for complications, but age and history of nursing home placement increase the risk for delirium in choice C. D: The 95-year-old with community-acquired pneumonia is at risk for delirium, but the combination of age, surgery, and nursing home history in choice C presents a greater risk.

Correct Answer: C

Rationale: The correct interpretation is C: Normal ABG values. 1. pH is within the normal range of 7.35-7.45. 2. PaCO2 is 40 mm Hg, within the normal range of 35-45 mm Hg. 3. Bicarbonate is 24 mEq/L, within the normal range of 22-26 mEq/L. 4. PaO2 is 95 mm Hg, within the normal range of 80-100 mm Hg. 5. Oxygen saturation is 97%, which is normal. 6. Respirations are also within the normal range at 20 breaths per minute. Overall, all values fall within the normal range, indicating a well-maintained acid-base balance. Other choices are incorrect because there are no abnormalities that would suggest compensated metabolic acidosis, metabolic alkalosis, or respiratory acidosis based on the given ABG values.

Correct Answer: B

Rationale: The correct answer is B because asking the patient to share his or her internal dialogue can provide direct insight into the patient's thoughts and feelings, allowing the nurse to address specific anxieties. This approach promotes open communication and understanding. Choice A focuses on providing information but may not directly address the patient's feelings. Choice C is unrelated to addressing the patient's anxiety. Choice D addresses pain control, which is important but not directly related to exploring the patient's emotions. Therefore, option B is the most effective strategy for gaining insight into the patient's feelings in this scenario.

Correct Answer: D

Rationale: The correct answer is D because positioning the patient with the head of the bed at 10 degrees is incorrect for a patient receiving mechanical ventilation. The optimal position for such patients is to elevate the head of the bed to 30-45 degrees to prevent aspiration and improve oxygenation. Option A is incorrect as increasing FIO2 before suctioning is appropriate to ensure adequate oxygenation. Option B is incorrect as securing a bite block in place using adhesive tape is a standard practice to prevent the patient from biting on the endotracheal tube. Option C is incorrect as asking for assistance to reposition the endotracheal tube shows the RN is aware of the importance of proper placement to ensure effective ventilation.

Correct Answer: B

Rationale: The correct answer is B because assessing the hemofilter every 6 hours for clotting is essential in ensuring the effectiveness of CRRT. Clotting can obstruct blood flow, leading to treatment inefficiency and potential harm to the patient. This step helps the nurse to promptly address any clotting issues and prevent complications. A: Assessing that the blood tubing is warm to the touch is not a standard practice for monitoring CRRT and does not provide relevant information about the treatment's effectiveness. C: Covering the dialysis lines to protect them from light is not a priority in monitoring CRRT. Light exposure is not a common concern in this context. D: Using clean technique during vascular access dressing changes is important for infection prevention but is not directly related to monitoring the effectiveness of CRRT.