— 生理適應 · HARD · MCQ —
一位急性呼吸窘迫症候群(ARDS)的病人,應預期出現何種發現?
A nurse is caring for a patient with acute respiratory distress syndrome (ARDS). Which finding is expected?
- AHypocapnia低二氧化碳血症
- BHigh PaO2/FiO2 ratio高 PaO2/FiO2 比值
- CIncreased lung compliance肺順應性增加
- DRefractory hypoxemia✓ 正解難治性低血氧
— Explanation · 中文詳解 —
ARDS 的典型特徵為難治性低血氧(Refractory hypoxemia),即給予高濃度氧氣後 SpO2 仍無法改善。ARDS 會導致肺部纖維化變硬,肺順應性下降;通常伴隨高碳酸血症而非低;PaO2/FiO2 比值會顯著下降。
Refractory hypoxemia is the hallmark of ARDS, characterized by low oxygen levels that do not improve with supplemental oxygen. This condition results from decreased lung compliance and significant reduction in the PaO2/FiO2 ratio.
✦ 台美臨床差異
兩國在 ARDS 的照護中,均強調俯臥位通氣(Prone position)以改善氧合,技術流程一致。