— 生理適應 · MEDIUM · MCQ —
一位肺氣腫病人正接受 4 L/min 氧氣治療。護理師最優先的擔憂為何？
A client with emphysema is receiving oxygen at 4 L/min. What is the nurse's priority concern?
- ASuppression of the hypoxic drive✓ 正解抑制缺氧驅動
- BRisk of skin breakdown around the mask面罩周圍皮膚破損的風險
- CInadequate humidification濕化不足
- DDevelopment of oxygen toxicity氧中毒的發展
— Explanation · 中文詳解 —
肺氣腫屬 COPD 一種，病人依賴低氧血症作為呼吸驅動力（Hypoxic drive）。給予高流量氧氣（如 4 L/min）會消除此驅動，導致肺泡通氣量降低、CO2 滯留，危及生命。低流量（1-2 L/min）才是標準處置。
Emphysema is a form of COPD, in which the client relies on hypoxemia as the respiratory drive (hypoxic drive). Administering high-flow oxygen (such as 4 L/min) eliminates this drive, leading to decreased alveolar ventilation and CO2 retention, which is life-threatening. Low-flow oxygen (1-2 L/min) is the standard of care.
✦ 台美臨床差異
台美兩地對 COPD 給氧指引一致，皆採取緩慢低流量給氧原則。