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生理適應 · HARD · SATA

護理師監測高鉀血症病人時,應觀察到哪些心電圖變化?(選所有適合的)

A nurse is caring for a client with hyperkalemia. Which ECG changes should the nurse monitor for? (Select all that apply.)

  • ATall, peaked T waves✓ 正解
    高聳尖銳的 T 波
  • BProlonged PR interval✓ 正解
    PR 間期延長
  • CShortened QT interval
    QT 間期縮短
  • DWidened QRS complex✓ 正解
    QRS 波群變寬
  • EST-segment depression
    ST 段壓低
Explanation · 中文詳解

高鉀血症會影響心肌去極化與再極化。典型變化包括 T 波高尖(早期)、PR 間期延長(傳導減慢)、QRS 波變寬(心室傳導阻滯)。QT 間期會隨鉀離子過高而縮短,而 ST 段壓低通常與缺血相關,非高鉀典型表現。

Hyperkalemia affects myocardial depolarization and repolarization, leading to characteristic ECG changes including tall, peaked T waves, prolonged PR intervals, and widened QRS complexes. These changes reflect slowed atrial conduction and significant ventricular conduction delays, which can progress to life-threatening arrhythmias.

✦ 台美臨床差異

美國護理師常需自行判讀心律,台灣護理師多依賴監測儀預設值警報並交由醫師判讀。

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