— 生理適應 · HARD · MCQ —
一位疑似急性呼吸窘迫症候群（ARDS）的病人入院，下列何項發現最符合早期徵象？
A client is admitted with suspected acute respiratory distress syndrome (ARDS). Which assessment finding is most characteristic of early ARDS?
- AMetabolic alkalosis代謝性鹼中毒
- BRespiratory alkalosis✓ 正解呼吸性鹼中毒
- CMetabolic acidosis代謝性酸中毒
- DRespiratory acidosis呼吸性酸中毒
— Explanation · 中文詳解 —
ARDS 初期因病人感到呼吸困難，出現代償性呼吸過速（Tachypnea），導致過多二氧化碳排出，產生呼吸性鹼中毒。隨著病情惡化造成換氣不足，才會轉為呼吸性酸中毒。因此早期階段的血氣分析特徵為呼吸性鹼中毒。
In the early stages of ARDS, clients often experience dyspnea leading to compensatory hyperventilation, which causes excessive elimination of carbon dioxide and results in respiratory alkalosis. This is a characteristic initial finding before the condition progresses to respiratory acidosis due to hypoventilation.
✦ 台美臨床差異
兩地對重症病人的 ABG 解讀邏輯一致。