— 生理適應 · EASY · MCQ —
一位病人因高血鉀入院，護理師應預期首先進行下列哪項檢查？
A client is admitted with hyperkalemia. Which diagnostic test should the nurse anticipate first?
- AElectrocardiogram (ECG)✓ 正解心電圖 (ECG)
- BComplete blood count全血球計數
- CRenal ultrasound腎臟超音波
- DArterial blood gases動脈血氣體分析
— Explanation · 中文詳解 —
高血鉀（Hyperkalemia）對心肌傳導系統具有直接的毒性影響，可能引發心室顫動（Ventricular Fibrillation）或心搏停止。在臨床工作中，面對高血鉀病人，護理師的首要任務是評估心臟電生理的穩定性。心電圖（ECG）檢查能迅速辨識出高血鉀的典型徵兆，如尖峰 T 波（Peaked T-waves）、PR 間期延長或 QRS 波群變寬，這些都是預測心臟驟停的關鍵指標，故優先級最高。
An electrocardiogram (ECG) is the priority diagnostic test because hyperkalemia can cause life-threatening cardiac arrhythmias such as ventricular fibrillation. The ECG allows for rapid identification of characteristic changes like peaked T waves, which signal immediate risk to cardiac stability.