護理師準備經鼻胃管給藥，下列何項為確保病人安全最關鍵的步驟？
A nurse is preparing to administer a medication via a nasogastric (NG) tube. Which is the most critical step to ensure client safety?
- AConfirm the NG tube placement before each medication administration✓ 正解每次給藥前確認鼻胃管位置
- BFlush the tube with 30 mL of sterile water before and after administration給藥前後以 30 mL 無菌水沖洗管路
- CElevate the head of the bed to a 30-degree angle將床頭抬高 30 度角
- DAdminister the medication slowly over 5 minutes在 5 分鐘內緩慢給藥
經鼻胃管給藥時，最關鍵的安全步驟是確認管路位置。若管路誤入氣管，灌入藥物將導致吸入性肺炎；若管路位置不正確（如脫出），藥物無法進入胃部被吸收。確認位置的方法包括抽吸胃液檢查 pH 值、氣泡測試或檢查標記刻度。此步驟是給藥的前置必要條件，其他步驟（如沖洗、抬高床頭）雖能提升舒適與吸收，但管路定位是前提。
When administering medications via NG tube, the most critical safety step is to confirm tube placement. If the tube is misplaced in the trachea, medication causes aspiration pneumonia; if displaced (e.g., dislodged), drug cannot be absorbed in the stomach. Confirmation methods include aspirating gastric contents to check pH, air bolus auscultation, and checking tube markings. This is a prerequisite for administration; other steps (flushing, head elevation) improve comfort and absorption but tube position is the foundation.