Correct Answer: D

Rationale: The correct answer is D: Administer morphine. The rationale is that vomiting after surgery can be a side effect of pain medication such as morphine. By administering morphine, the pain is reduced, which can help alleviate the vomiting. This intervention targets the root cause of the vomiting. Other choices are incorrect because: A: Administering antiemetics may help with nausea but does not address the underlying cause of vomiting. B: Placing the client in a supine position may worsen vomiting due to increased abdominal pressure. C: Encouraging deep breathing may help with relaxation but does not directly address the vomiting caused by pain.

Correct Answer: A

Rationale: The correct answer is A: Turn the client every two hours. This action helps prevent pressure ulcers by relieving pressure on specific areas of the body. Turning the client redistributes pressure, promotes circulation, and reduces the risk of tissue damage. It is a crucial part of pressure ulcer prevention in immobile or bedridden patients. Increasing protein intake (B) may aid in wound healing but does not directly prevent pressure ulcers. Encouraging rest (C) may not address the root cause of pressure ulcers. Applying dressings to wounds (D) is a treatment for existing ulcers, not prevention.

Correct Answer: A

Rationale: The correct answer is A: Administer pain relief. The nurse should address the client's immediate symptom of severe headache to provide comfort and assess the severity of the condition. Pain relief can help decrease anxiety and prevent complications. Monitoring vital signs (B) is important but treating the symptom should take priority. Monitoring ECG (C) is not necessary for a headache presentation. Administering insulin (D) is not indicated for a client presenting with a severe headache.

Correct Answer: A

Rationale: The correct answer is A: Administer IV fluids. This is the most important nursing intervention for a client with severe dehydration because IV fluids provide rapid rehydration and help restore electrolyte balance efficiently. Monitoring vital signs (choice B) is important but not as crucial as providing immediate fluid replacement. Providing oral rehydration (choice C) may not be effective for severe dehydration as the client may have difficulty absorbing fluids orally. Administering oxygen (choice D) is not directly related to treating dehydration, so it is not the most important intervention in this scenario.

Correct Answer: A

Rationale: The correct answer is A: Administer oxygen. In acute shortness of breath with COPD, oxygen therapy is crucial to improve oxygenation levels and alleviate respiratory distress. Oxygen can help reduce the workload on the lungs and heart. Antibiotics (B) are not indicated unless there is a suspected bacterial infection. Monitoring blood glucose (C) is important in diabetes management but not the priority in acute respiratory distress. Administering pain relief (D) may not address the underlying cause of the shortness of breath. Oxygen therapy directly targets the respiratory issue in COPD exacerbation, making it the most effective initial intervention.