— 藥理與非經腸給藥 · HARD · MCQ —
護理師照護一位毛地黃中毒病人，哪項發現應最優先處理？
A nurse is caring for a client with digoxin toxicity. Which finding should the nurse prioritize?
- AFatigue and weakness疲倦與虛弱
- BNausea and vomiting噁心與嘔吐
- CVisual disturbances such as green-yellow halos視覺障礙，如黃綠色光暈
- DNew-onset bradycardia with irregular rhythm✓ 正解新發之心搏過緩伴隨心律不整
— Explanation · 中文詳解 —
毛地黃（Digoxin）具有正性肌力與負性傳導作用，治療指數窄，極易中毒。其中毒表現包含胃腸道症狀（噁心、嘔吐）、視覺障礙（黃綠光暈）及心律不整。在 NCLEX 考試中，優先級（Priority）應依據 ABC 原則，心律不整（Cardiac Dysrhythmias）可能導致心輸出量銳減，危及生命，相較於噁心或視覺異常，這是最需優先處理的生理不穩定狀態。
Digoxin toxicity primarily affects cardiac conduction, making dysrhythmias the most critical and life-threatening complication. While gastrointestinal and visual symptoms are common indicators, new-onset bradycardia with an irregular rhythm poses an immediate risk of hemodynamic instability and requires urgent intervention.