病人醫囑為速尿靈 40 mg 靜脈推注。在給藥前下列哪項護理行動最為重要？
A client is prescribed furosemide 40 mg IV push. Which nursing action is essential before administering this medication?
- AVerify the client's fasting status確認病人的禁食狀態
- BCheck the client's current potassium level✓ 正解檢查病人目前的血鉀濃度
- CObtain a baseline coagulation profile取得基線凝血功能檢查
- DAssess the client's blood glucose level評估病人的血糖水平
Furosemide 是一種強效利尿劑，會導致鉀離子經由尿液排出，長期或大劑量使用易引發低血鉀（hypokalemia）。低血鉀會增加毛地黃毒性，並可能引發致命性心律不整。因此，給藥前確認血鉀數值是標準安全評估，若低於 3.5 mEq/L，護理師必須暫停給藥並諮詢醫師。這對預防藥物引起的電解質失衡併發症至關重要。
Furosemide is a potent diuretic that causes urinary potassium loss; long-term or high-dose use can readily produce hypokalemia. Low serum potassium increases the risk of digoxin toxicity and can precipitate life-threatening dysrhythmias. Verifying the serum potassium level before administration is therefore a standard safety check. If the value is below 3.5 mEq/L, the nurse should hold the medication and consult the physician. This is critical for preventing medication-induced electrolyte complications.