— 降低風險 · MEDIUM · MCQ —
護理師照護一位有 COPD 病史的病人。下列哪種氧氣裝置最適合提供精確的氧氣濃度？
A nurse is caring for a client with a history of COPD. Which oxygen delivery device is most appropriate to deliver a precise oxygen concentration?
- ASimple face mask簡單面罩
- BNon-rebreather mask非再呼吸面罩
- CNasal cannula鼻導管
- DVenturi mask✓ 正解文氏面罩
— Explanation · 中文詳解 —
對於需要精確 FiO2 的病人（如 COPD），文氏面罩（Venturi mask）是最佳選擇，它利用伯努利原理混合空氣與氧氣，提供恆定的氧氣濃度。鼻導管濃度受呼吸頻率影響，非精確裝置。非再呼吸面罩則適用於高濃度需求。
For clients requiring a precise FiO2 (such as those with COPD), the Venturi mask is the best choice; it uses the Bernoulli principle to mix air and oxygen, providing a constant oxygen concentration. The nasal cannula concentration varies with respiratory rate and is not a precise device. The non-rebreather mask is reserved for high-concentration oxygen requirements.
✦ 台美臨床差異
兩地臨床在處理 COPD 急性發作時，皆將維持 SpO2 於目標值（88-92%）視為標準程序。