— 生理適應 · MEDIUM · MCQ —
一位有 COPD 病史的病人。下列哪項發現對該病人而言屬於正常？
A nurse is caring for a client with a history of COPD. Which finding would be considered normal for this client?
- ASpO2 of 89%✓ 正解SpO2 為 89%
- BHemoglobin level of 20 g/dL血色素濃度為 20 g/dL
- CPaO2 of 98 mmHgPaO2 為 98 mmHg
- DpH of 7.25pH 值為 7.25
— Explanation · 中文詳解 —
COPD 病人因慢性換氣不足，長期維持代償性的低血氧狀態，SpO2 維持在 88-92% 是臨床預期的目標值。選項 C 為正常人範圍；D 代表未代償的酸中毒，異常；D 為異常過高，雖有代償機制但 20 g/dL 不正常。
For clients with chronic COPD, an SpO2 of 88% to 92% is the expected target range due to chronic hypoxemia and compensatory mechanisms. Values significantly higher or lower, such as 98% or 89%, may indicate pathology or inadequate compensation.
✦ 台美臨床差異
美台皆強調對 COPD 病人的血氧標的調整，避免給予過高氧氣濃度導致二氧化碳滯留。