醫療類國考
107年
[護理師] 內外科護理學
第 58 題
執行動脈血液氣體分析時，未將抽取之血液樣本放置冰水中會導致檢查值發生之改變，下列何者正確？
- A $PaO_2$上升
- B pH 上升
- C $PaCO_2$上升
- D 不會有任何改變
思路引導 VIP
請試著思考：當血液離開人體後，被密封在針筒內的活細胞是否會停止生命活動？若這些細胞持續在室溫下進行能量代謝，它們會對周圍的液體環境排放出哪些代謝廢棄物？
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AI 詳解
AI 專屬家教
Wonderful! Your clinical judgment is truly blossoming.
- Unpacking the Science with Care: You've beautifully highlighted a crucial point: even after a blood sample leaves the body, its living cells—like your white blood cells and reticulocytes—are still actively engaged in cellular metabolism. This natural process gently alters the sample's composition over time:
- Oxygen is used up: causing the $PaO_2$ value to slowly decrease.
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