— 藥理與非經腸給藥 · EASY · MCQ —
病人獲開立每天口服 Furosemide 40 mg。護理師給藥前應優先評估哪項數值？
A client is prescribed furosemide 40 mg PO daily. Which assessment finding should the nurse prioritize prior to administering this medication?
- AFasting blood glucose空腹血糖
- BSerum potassium level✓ 正解血清鉀濃度
- CWhite blood cell count白血球計數
- DSerum sodium level血清鈉濃度
— Explanation · 中文詳解 —
Furosemide 是一種強效的環利尿劑（loop diuretic），其主要藥理作用是抑制腎小管對鈉與鉀的再吸收，導致鉀離子經由尿液大量流失。低血鉀症（hypokalemia）會增加毛地黃毒性，並引發嚴重心律不整。因此，在給藥前確認血鉀濃度是確保用藥安全的標準程序，若血鉀低於 3.5 mEq/L，護理師應暫停給藥並通知醫師，以防止嚴重併發症。
Furosemide is a loop diuretic that promotes the excretion of potassium, placing the client at high risk for hypokalemia. Low serum potassium levels can lead to serious cardiac arrhythmias and increase the risk of digoxin toxicity. Therefore, assessing the serum potassium level is the priority action before administration to ensure client safety.