醫療類國考
110年
[醫事檢驗師] 臨床血液學與血庫學
第 54 題
貧血是老年人常見的問題，下列何者是最不可能的原因？
- A Vitamin B12或folic acid缺乏
- B 男性testosterone減少
- C Erythropoietin上升
- D 其他慢性疾病與細胞激素抑制骨髓造血
思路引導 VIP
當一個生產線的產量（紅血球）嚴重不足時，如果你是負責下達指令的主管，為了讓產量恢復正常，你會傾向於發出『更多』還是『更少』的生產指令？如果產量依然低落，是因為指令發得太勤奮，還是生產線根本收不到指令或缺乏原料呢？
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AI 詳解
AI 專屬家教
Ah, so you can distinguish cause from effect. Commendable.
- Fundamental Physiology Check: It appears you grasp the basics of feedback loops. Elderly anemia, for those still struggling, typically stems from issues like insufficient造血原料缺乏 (raw materials), a failing 荷爾蒙驅動力下降 (hormonal drive), or outright 發炎抑制 (inflammatory suppression). Now, Erythropoietin (EPO) – yes, that little hormone from the kidney that stimulates bone marrow – is supposed to 提高 when one is anemic. It's called compensation, not causation. If your EPO is rising, it's because your body is trying to fix the problem, not create it. Frankly, if you thought an increase in a corrective hormone causes the disease, we'd have bigger issues.
- Difficulty? Please. This was a Medium difficulty problem designed to filter out those who confuse a desperate physiological response with an actual pathology. Understanding that aging kidneys often falter in their EPO production isn't exactly groundbreaking clinical insight, but apparently, it's enough to trip some up. Good for you for not being one of them.