病人正持續靜脈輸注肝素（Heparin），護理師發現 aPTT 為 120 秒。優先行動為何？
A client is receiving a continuous heparin infusion. The nurse notes the aPTT is 120 seconds. Which action is priority?
- APrepare to administer protamine sulfate準備施用硫酸魚精蛋白
- BIncrease the infusion rate增加輸注速率
- CStop the infusion and notify the healthcare provider✓ 正解停止輸注並通知醫療提供者
- DDocument the result and continue the infusion記錄結果並繼續輸注
肝素（Heparin）治療需嚴格監測活化部分凝血活酶時間（aPTT）。正常值通常為 25-35 秒，治療目標通常為正常值的 1.5-2.5 倍。當 aPTT 達到 120 秒時，意味著抗凝血效果過度，病人面臨致命性出血風險。護理師應優先確保病人安全，立即停止輸注以防藥物繼續累積，並通知醫師調整劑量。
Heparin therapy requires strict monitoring of activated partial thromboplastin time (aPTT). The normal value is typically 25–35 seconds, and the therapeutic target is generally 1.5–2.5 times the normal value. When aPTT reaches 120 seconds, it indicates excessive anticoagulation, and the client faces a fatal bleeding risk. The nurse should prioritize client safety by immediately stopping the infusion to prevent further drug accumulation and notifying the provider to adjust the dose.