護理師準備透過鼻胃管（NG tube）給予藥物，哪項措施能確保病人安全？

透過鼻胃管（Nasogastric, NG tube）給予藥物時，確保管子正確放置於胃內是首要的安全步驟。若管子意外移位至食道或氣管，將藥物注入可能導致嚴重的後果，例如吸入性肺炎（aspiration pneumonia）。正確答案 B 指出「在給藥前確認 NG 管的放置位置」，這是確保病人安全的最關鍵措施。確認管位的方法包括：目視檢查管子標記、測量外露長度、聽診腹部（聽氣體聲）、以及最可靠的 pH 值檢測（胃液 pH 值通常 <5.5，呼吸道分泌物 pH 值通常 >6.0）。選項 C（快速給藥）與安全無關，反而可能因病人來不及反應而嗆到。選項 A（用空氣沖洗）並非標準或最有效的確認管位方法，且空氣注入可能引起腹脹或不適。選項 D（壓碎所有藥物）是不正確的，某些藥物（如長效型、腸溶膜衣劑）不可壓碎，否則會影響藥效或引起副作用。

When administering medication via a nasogastric (NG) tube, confirming that the tube is correctly positioned in the stomach is the foremost safety step. If the tube is inadvertently displaced into the esophagus or trachea, instillation of medication can cause serious consequences such as aspiration pneumonia. The correct answer (B) indicates that verifying NG tube placement before administration is the most critical safety measure. Verification methods include: visual inspection of the tube marking, measuring the external length, abdominal auscultation (listening for air sounds), and, most reliably, pH testing (gastric fluid pH typically <5.5, respiratory secretion pH typically >6.0). Option C (rapid administration) is unrelated to safety and may actually increase the risk of choking. Option A (flushing with air) is neither a standard nor the most reliable method to confirm tube placement, and air insufflation may cause abdominal distention or discomfort. Option D (crushing all medications) is incorrect, as some medications (such as long-acting or enteric-coated formulations) cannot be crushed without altering their effect or causing adverse reactions.

無顯著差異。鼻胃管（NG tube）的放置確認程序，包括給藥前的管位檢查，在台灣與美國的醫療實務中均為標準操作。兩地都會強調使用 pH 測試等方法來確認管位，以確保病人安全。