護理師正在照顧一位接受持續性肝素靜脈輸注的病人。該病人的活化部分凝血時間（aPTT）顯著升高。護理師應採取何種行動？
A nurse is caring for a client receiving a continuous intravenous infusion of heparin. The client's activated partial thromboplastin time (aPTT) is significantly elevated. Which action should the nurse take?
- AIncrease the heparin infusion rate增加肝素輸注速率
- BContinue the infusion as prescribed繼續按規定輸注
- CStop the heparin infusion temporarily✓ 正解暫時停止肝素輸注
- DAdminister protamine sulfate給藥硫酸魚精蛋白
肝素（Heparin）透過抑制凝血酶活性來達到抗凝血效果，臨床上透過 aPTT 監測其療效。若 aPTT 顯著升高，代表病人體內抗凝血程度已過高，出血風險極大。此時護理師應立即採取行動暫停輸注，並根據醫院的肝素滴定流程（Heparin Titration Protocol）回報數據，以確保病人安全。
An elevated activated partial thromboplastin time (aPTT) indicates excessive anticoagulation and a high risk of bleeding. The nurse should immediately stop the heparin infusion to prevent hemorrhage and notify the healthcare provider. This action aligns with standard heparin titration protocols to ensure patient safety while awaiting further medical orders.
美國醫院多設有「肝素給藥流程（Heparin Protocol）」，護理師通常依據此流程調整，但若數據異常顯著，仍須立即通知醫師。