護理師準備對低血鉀病人靜脈輸注氯化鉀。給藥前確認哪項評估數據最為重要？
A nurse is preparing to administer intravenous potassium chloride to a client with hypokalemia. Which assessment finding is most important to verify before infusion?
- ABlood pressure reading of 110/70 mmHg血壓讀數為 110/70 mmHg
- BPeripheral IV site appearance周邊靜脈注射部位外觀
- CCurrent serum potassium level of 3.2 mEq/L目前血清鉀濃度為 3.2 mEq/L
- DUrine output of 20 mL over the last 2 hours✓ 正解過去 2 小時的尿液輸出量為 20 mL
給予鉀離子前，必須確認腎功能正常，以防蓄積導致高血鉀心律不整。尿量至少應維持在 0.5 mL/kg/hr（或每小時 30 mL），2 小時僅 20 mL 指示腎功能不佳或灌流不足，強行補鉀有致命風險。其他選項雖重要，但腎功能衰竭與補充鉀離子風險的關聯性最高。
Before administering potassium, it is essential to verify that renal function is adequate, since impaired excretion can cause accumulation and hyperkalemic arrhythmias. Urine output should be maintained at a minimum of 0.5 mL/kg/hr (or 30 mL per hour); only 20 mL over 2 hours indicates poor renal function or inadequate perfusion, and giving potassium under these conditions carries a fatal risk. The other options are important, but renal impairment is most directly linked to the risk of potassium supplementation.
台美均強調腎功能監測，但美國多依賴 Cr/BUN 檢測結果及尿量監測，台灣臨床更常口頭確認排尿情況。