病人正透過重力滴注方式輸注含有 20 mEq 氯化鉀的 100 mL 生理食鹽水，護理師觀察到注射部位出現局部疼痛與紅腫，請問護理師的首要行動為何？
A client is receiving an intravenous infusion of potassium chloride 20 mEq in 100 mL of 0.9% Normal Saline via gravity. The nurse observes local pain and redness at the site. What is the nurse's priority action?
- AFlush the intravenous line with normal saline以生理食鹽水沖洗靜脈管路
- BSlow the rate of infusion減慢輸注速率
- CStop the infusion immediately✓ 正解立即停止輸注
- DApply a warm compress to the site在注射部位敷熱敷
鉀離子具有高度刺激性，一旦懷疑發生外滲或靜脈炎，應立即停止輸液以防組織壞死。此為藥物給予過程中保護病人安全最基本的操作原則。相較之下，減慢速度無濟於事，沖洗導管可能加重損傷，熱敷則視後續評估而定，優先級低於停止給藥。
Potassium is highly irritating; once extravasation or phlebitis is suspected, the infusion must be stopped immediately to prevent tissue necrosis. This is the most basic safety principle in medication administration. In contrast, slowing the rate does not help, flushing the catheter may worsen the injury, and applying warm compresses depends on subsequent assessment, all of which have lower priority than stopping the infusion.
美台臨床皆視氯化鉀外滲為緊急情況，需立即停止輸液並依機構規格處理。