— 生理適應 · HARD · MCQ —
對於 ARDS 的病人，哪一項評估指標最能代表治療有效？
Which assessment finding is the most reliable indicator of effective treatment in a client with ARDS?
- ADecreased peak airway pressure尖峰氣道壓降低
- BImproved chest x-ray胸部 X 光改善
- CIncreased urine output尿量增加
- DIncreased PaO2 on ABG✓ 正解ABG 顯示 PaO2 增加
— Explanation · 中文詳解 —
急性呼吸窘迫症候群（ARDS）的主要病理特徵是頑固性低血氧（Refractory Hypoxemia），這是因為肺泡塌陷及通氣血流比例失調所致。治療目標在於改善氣體交換功能。動脈血氣分析（ABG）中的 PaO2 是反映肺部氣體交換成效最客觀的數據，PaO2 上升直接代表治療措施（如 PEEP 設定、俯臥位通氣）有效提升了肺泡氧合能力。
Acute respiratory distress syndrome (ARDS) is characterized by refractory hypoxemia due to impaired gas exchange. An increased partial pressure of arterial oxygen (PaO2) on arterial blood gas analysis is the most reliable indicator of effective treatment, as it directly reflects improved pulmonary oxygenation.