Correct Answer: A

Rationale: The correct answer is A: Administer oxygen. This is the priority intervention to address severe shortness of breath, ensuring the client receives adequate oxygenation. Administering oxygen helps improve oxygen saturation levels and supports respiratory function. Encouraging deep breathing (B) may exacerbate the client's distress. Elevating the head of the bed (C) can help improve breathing but does not address the immediate need for oxygen. Administering antibiotics (D) is not indicated for shortness of breath unless there is an underlying infection causing it.

Correct Answer: A

Rationale: The correct first step in managing a client with acute renal failure is to administer IV fluids (Choice A). This is crucial to ensure adequate hydration and maintain renal perfusion. By administering IV fluids, you can help improve kidney function and prevent further damage. Monitoring urine output (Choice B) is important but comes after addressing the fluid balance with IV fluids. Performing a CT scan (Choice C) is not typically the initial step in managing acute renal failure as it does not directly impact the patient's immediate condition. Administering diuretics (Choice D) can worsen the condition by further reducing kidney function, so it is not the recommended first step.

Correct Answer: A

Rationale: The correct answer is A: Administer bronchodilators. During an acute asthma attack, the priority is to open the airways quickly to improve breathing. Bronchodilators work rapidly to dilate the constricted airways, providing immediate relief. Corticosteroids are used for long-term management and take time to be effective. Administering morphine is not recommended as it can depress the respiratory system. Performing an ECG is not necessary in the acute management of an asthma attack.

Correct Answer: B

Rationale: The correct answer is B. When a patient with severe injuries is brought to the emergency department, the nurse should prioritize performing a physical examination and initiating lifesaving measures while asking history questions simultaneously. This approach allows for immediate assessment and intervention to address any life-threatening conditions. Gathering history information while performing the examination ensures that critical details are not missed and helps in making timely decisions. Choosing option A could delay lifesaving interventions, while option C is not a priority during the initial assessment of a critically injured patient. Option D is incorrect as it prioritizes lifesaving measures over obtaining important history information during the initial assessment.

Correct Answer: A

Rationale: The correct answer is A: Encouraging early ambulation. This is the priority intervention as it helps prevent complications such as blood clots and pneumonia, promotes circulation, and aids in faster recovery. Ambulation also helps maintain joint mobility and muscle strength. Administering pain medications (B) is important but not the priority. Providing wound care (C) and monitoring for infection (D) are important, but ambulation takes precedence in preventing complications.