病人診斷為急性呼吸窘迫症候群（ARDS）且正在使用呼吸器。下列哪項護理措施對於維持生理穩定最優先？
A client is diagnosed with acute respiratory distress syndrome (ARDS) and is currently ventilated. Which nursing intervention is priority to ensure physiological stability?
- AFrequent suctioning to clear secretions頻繁抽痰以清除分泌物
- BAdministering high-dose corticosteroids給予高劑量皮質類固醇
- CMaintaining low tidal volume ventilation✓ 正解維持低潮氣容積通氣
- DKeeping the client in a supine position使病人保持仰臥姿勢
ARDS 的核心治療是肺保護性通氣策略。採用低潮氣容積（6 mL/kg 理想體重）可減少肺泡過度擴張與氣壓傷害（Barotrauma），這是唯一證實能顯著降低 ARDS 死亡率的呼吸器策略。D 選項錯誤，俯臥位通氣（Prone position）才是改善氧合的標準照護，平躺會加重壓迫。
The core treatment of ARDS is lung-protective ventilation strategy. Using a low tidal volume (6 mL/kg of ideal body weight) reduces alveolar overdistention and barotrauma, and is the only ventilator strategy shown to significantly reduce ARDS mortality. Option D is incorrect: prone positioning is the standard of care to improve oxygenation; the supine position can worsen compression.
美台臨床對於 ARDS 呼吸器參數設定皆遵循 ARDSNet 指引，但俯臥位（Prone）操作在台灣大型教學醫院普及度逐年增加。