Correct Answer: B

Rationale: Administering oxygen via nasal cannula as prescribed is the most appropriate action to improve the patient's oxygenation in COPD. Oxygen therapy helps maintain adequate oxygen levels in the blood, which is crucial for managing COPD. Encouraging the use of incentive spirometry, assisting with coughing and deep breathing exercises, and positioning the patient in high Fowler's position are all beneficial interventions, but administering oxygen is the priority for immediate oxygenation support in COPD.

Correct Answer: A

Rationale: The correct answer is A: 'Assist the patient with comfort measures.' When a patient is experiencing impaired physical mobility due to pain, the priority action is to provide comfort measures to help manage the pain. By addressing the pain, the patient may then feel more comfortable moving and engaging in mobility exercises. Option B, 'Keep the patient as mobile as possible,' could exacerbate the pain and should not be the initial action. While encouraging range of motion (ROM) exercises (Option C) and self-care (Option D) are important aspects of care, addressing pain and comfort should take precedence in this scenario.

Correct Answer: A

Rationale: Auscultating the entire lung region is the most appropriate action when assessing a patient for respiratory complications related to immobility. This approach helps the nurse identify any abnormalities in lung sounds, such as diminished breath sounds or the presence of secretions. Assessing the patient at regular intervals (choice B) is important but does not specifically address the respiratory assessment needed in this situation. Focusing auscultation on the upper lung fields (choice C) may miss potential issues in other areas. Inspecting chest wall movements primarily during the expiratory cycle (choice D) is not the most effective way to assess lung sounds and identify respiratory complications.

Correct Answer: B

Rationale: When a patient presents with severe pain and leg swelling, the nurse should assess for compartment syndrome. Compartment syndrome is a serious condition that can develop due to increased pressure within a muscle compartment, leading to compromised circulation and potential tissue damage. It is crucial to identify compartment syndrome promptly as it may require immediate intervention to prevent further complications. Checking for signs of deep vein thrombosis (Choice A) is also important in a patient with leg swelling, but in this scenario, the focus should be on assessing for compartment syndrome due to the severity of the symptoms. Increasing fluid intake (Choice C) may not address the underlying cause of the patient's symptoms. Preparing the patient for surgery (Choice D) without a comprehensive assessment and diagnosis is premature and may not be the appropriate initial intervention.

Correct Answer: D

Rationale: The nurse should see the patient with a hip replacement experiencing chest pain and dyspnea first because these symptoms could indicate a pulmonary embolism, which is a life-threatening condition requiring immediate attention. The other patients also need care, but urgent assessment and intervention are crucial in the case of potential pulmonary embolism to prevent serious complications or death.