— 藥理與非經腸給藥 · MEDIUM · MCQ —
病人醫囑給予 Furosemide 40 mg 靜脈推注。給藥前最重要的護理評估為何？
A client is prescribed furosemide 40 mg IV push. Which nursing assessment is highest priority before administration?
- ABlood glucose level血糖值
- BRespiratory rate呼吸頻率
- CSerum potassium level✓ 正解血清鉀濃度
- DSkin turgor皮膚張力
— Explanation · 中文詳解 —
Furosemide 屬於強效環狀利尿劑（loop diuretic），其作用機轉為抑制亨利氏環（loop of Henle）對鈉、氯與鉀離子的再吸收。臨床給藥前，評估鉀離子（potassium）濃度至關重要，因為低血鉀（hypokalemia）會顯著增加病人發生心律不整（arrhythmias）的風險，特別是若病人同時服用毛地黃類藥物時，風險更甚。
Furosemide is a potent loop diuretic that acts by inhibiting reabsorption of sodium, chloride, and potassium in the loop of Henle. Before clinical administration, assessment of the potassium level is critical, because hypokalemia significantly increases the risk of dysrhythmias, especially when the client is also taking digitalis.