護理師準備經由靜脈輸注（IV piggyback）給予苯妥英（Phenytoin）。哪項行動對預防併發症至關重要？
A nurse is preparing to administer phenytoin via an IV piggyback. Which action is essential to prevent complications?
- AAdminister it rapidly to reach therapeutic levels快速給藥以達到治療濃度
- BFlush the IV line with normal saline before and after administration✓ 正解給藥前後以生理食鹽水沖洗靜脈管路
- CKeep the client in a supine position during the infusion輸注期間讓病人保持仰臥姿勢
- DDilute the medication in dextrose 5% in water (D5W)以 5% 葡萄糖注射液 (D5W) 稀釋藥物
苯妥英（Phenytoin）是一種抗癲癇藥物，其化學特性決定了它與許多靜脈輸液（如含葡萄糖的溶液）不相容，容易產生沉澱結晶。此外，苯妥英對血管壁具有強烈刺激性，易引起靜脈炎。因此，在給藥前後必須使用生理食鹽水（Normal Saline）徹底沖洗靜脈管路，確保藥物不會與管路內殘留的其他輸液混合，並避免藥物留在血管內造成局部刺激。
Phenytoin is an antiepileptic medication whose chemical properties make it incompatible with many intravenous fluids (such as dextrose-containing solutions), with which it readily forms precipitates. In addition, phenytoin is highly irritating to the vessel wall and can cause phlebitis. Therefore, before and after administration, normal saline must be used to thoroughly flush the IV line to ensure the medication does not mix with other residual fluids in the line and to prevent the drug from remaining in the vessel and causing local irritation.