護理師準備為低血鉀病人靜脈輸注氯化鉀，下列哪項評估結果需要暫停給藥？
A nurse is preparing to administer intravenous potassium chloride to a client with hypokalemia. Which assessment finding requires the nurse to withhold the medication?
- AHeart rate of 88 beats per minute心率每分鐘88次
- BSerum potassium level of 3.2 mEq/L血清鉀濃度3.2 mEq/L
- CUrine output of 20 mL/hr✓ 正解尿量每小時20 mL
- DBlood pressure of 110/70 mmHg血壓110/70 mmHg
靜脈輸注氯化鉀（KCl）具有高度風險，因鉀離子主要經由腎臟排泄。若病人腎功能受損導致無尿或少尿，過快補鉀會引發致命性的高血鉀症（Hyperkalemia），進而導致心律不整甚至心跳停止。護理師在給藥前必須確保腎臟排泄功能正常，臨床上以每小時尿量（Urine Output）至少 30 mL 作為安全指標。
Intravenous potassium chloride (KCl) is a high-risk infusion because potassium is excreted primarily by the kidneys. If renal function is impaired and the client is anuric or oliguric, rapid potassium replacement can produce life-threatening hyperkalemia, leading to cardiac arrhythmias and even cardiac arrest. The nurse must ensure adequate renal excretory function before administration; clinically, a urine output of at least 30 mL/hour is used as the safety threshold.