— 健康促進與維護 · MEDIUM · MCQ —
護理師指導個案使用血糖機。哪項步驟對獲得準確結果至關重要？
A nurse is teaching a client about the use of a glucometer. What step is essential for accurate results?
- AWipe the finger with rubbing alcohol and test immediately while wet用酒精擦拭手指並在濕潤時立即測試
- BUse the same finger for every test to avoid bruising每次使用同一根手指以避免瘀青
- CWash hands with soap and water before testing✓ 正解測試前用肥皂和水洗手
- DAlways draw the blood sample from the center of the finger pad總是從指腹中心抽取血液樣本
— Explanation · 中文詳解 —
血糖監測的準確性取決於採血前的準備工作。手部皮膚表面的污染物（如殘留的糖分、食物碎屑或油脂）會導致血糖讀數出現假性偏高，進而影響臨床判斷與胰島素劑量調整。因此，使用肥皂和水洗手是確保樣本純淨的最基礎且關鍵步驟。在進行臨床技能指導時，務必強調洗手的重要性高於酒精消毒，因為酒精殘留會干擾試紙上的氧化酶反應，導致結果誤差。
Washing hands with soap and water before testing is essential to remove contaminants like food residue or sugar that can cause falsely elevated glucose readings. While alcohol wipes are commonly used, they must be allowed to dry completely to prevent interference with the test strip chemistry. Rotating puncture sites and using the side of the finger also help maintain skin integrity and accuracy.