— 生理適應 · EASY · MCQ —
一位高血鉀病人入院，護理師應優先監測哪項心電圖變化？
A client is admitted with hyperkalemia. Which ECG change should the nurse monitor for?
- ADepressed ST segmentST 段壓低
- BTall, peaked T waves✓ 正解高大尖銳的 T 波
- CProlonged QT intervalQT 間期延長
- DU waveU 波
— Explanation · 中文詳解 —
高血鉀會影響心肌去極化與再極化，經典心電圖變化為 T 波高尖（Tall, peaked T waves），嚴重時會導致 QRS 波變寬與心律不整。U 波為低血鉀表現，ST 段下降與 QT 延長常見於低血鉀或心肌缺血。
Hyperkalemia affects myocardial depolarization and repolarization, classically presenting on the ECG as tall, peaked T waves. While severe cases may lead to widened QRS complexes and arrhythmias, peaked T waves are the earliest and most specific sign of elevated potassium levels.
✦ 台美臨床差異
無顯著差異，臨床照護原則全球皆遵循 ACLS 指引。