Correct Answer: B

Rationale: The correct answer is B. The nurse must follow the legal DNR order, even if the family insists on resuscitation. Respecting the patient's wishes is crucial in providing ethical care. Choice A is incorrect because the nurse should prioritize the patient's documented wishes over the family's requests. Choice C may cause unnecessary delays in care as the DNR order is a legal document. Choice D is not the initial action to take in this situation; the nurse should first address the conflict between the family's wishes and the patient's DNR order.

Correct Answer: B

Rationale: The most important nursing intervention when caring for a patient with a wound is to clean the wound with normal saline. This is crucial for preventing infection and promoting healing. Applying an occlusive dressing (Choice A) can be important but should come after cleaning the wound. Administering antibiotics (Choice C) is not the first-line intervention for all wounds and should be based on the healthcare provider's prescription. Reassessing the wound (Choice D) is essential but not the most important initial intervention.

Correct Answer: B

Rationale: The correct answer is to assess the patient's oxygen saturation. In suspected pneumonia, ensuring adequate oxygenation is critical to monitor respiratory function. Auscultating lung sounds is important but assessing oxygen saturation takes precedence as it directly reflects the patient's oxygen levels. Monitoring white blood cell count is more related to infection assessment rather than immediate respiratory status. Checking skin integrity is essential for overall patient care but is not the priority in a patient with suspected pneumonia.

Correct Answer: B

Rationale: The correct answer is to administer antibiotics as prescribed. Antibiotics are the primary treatment for urinary tract infections as they help eliminate the bacteria causing the infection. Encouraging the patient to increase fluid intake (Choice A) is a supportive measure to help flush out the bacteria but doesn't directly treat the infection. Over-the-counter pain relievers (Choice C) may help with discomfort but do not address the underlying infection. Limiting physical activity (Choice D) may be recommended for some conditions but is not the primary intervention for treating a UTI.

Correct Answer: B

Rationale: Administering oxygen at 2 liters per minute via nasal cannula is the immediate action for a patient experiencing shortness of breath. This intervention helps to improve oxygenation and relieve respiratory distress promptly. Placing the patient in a high Fowler's position (choice A) may also be beneficial but providing oxygen takes precedence in this scenario to address the underlying hypoxemia. Encouraging deep breaths and coughing (choice C) may not be appropriate as the first action, especially without assessing the patient first. Assessing lung sounds (choice D) is essential but should follow the initial intervention of administering oxygen.