— 生理適應 · MEDIUM · MCQ —
一位病人血鉀濃度為 6.2 mEq/L 入院。護理師應監測何種心律變化？
A client is admitted with a potassium level of 6.2 mEq/L. Which cardiac rhythm change should the nurse monitor for?
- ATall, peaked T waves✓ 正解高大、尖錐狀之 T 波
- BU wavesU 波
- CST segment depressionST 段下降
- DProlonged QT intervalQT 間期延長
— Explanation · 中文詳解 —
高血鉀（Hyperkalemia）會影響心肌去極化與再極化過程。初期心電圖變化常表現為高尖 T 波（Tall, peaked T waves）。若數值持續上升，會進一步出現 PR 間期延長、QRS 波變寬，最後導致心室顫動。
Hyperkalemia affects myocardial depolarization and repolarization, initially manifesting on the ECG as tall, peaked T waves. As potassium levels rise further, the nurse should also monitor for prolonged PR intervals, widened QRS complexes, and potentially life-threatening ventricular fibrillation.
✦ 台美臨床差異
台美醫療團隊皆視高血鉀為心律不整高風險狀態，均需立即執行連續心電圖監測。