— 生理適應 · MEDIUM · MCQ —
一位病人出現心肌梗塞的症狀。何項發現是下壁心肌梗塞的典型指標？
A client is experiencing symptoms of a myocardial infarction. Which finding is a classic indicator of an inferior wall MI?
- AST-segment elevation in leads II, III, and aVF✓ 正解導程II、III及aVF出現ST段抬高
- BT-wave inversion in leads V5-V6導程V5-V6出現T波倒置
- CST-segment elevation in leads V1-V4導程V1-V4出現ST段抬高
- DST-segment depression in leads I and aVL導程I及aVL出現ST段壓低
— Explanation · 中文詳解 —
下壁心肌梗塞（Inferior wall MI）最常影響右心室，其心電圖典型表現為導程 II、III、aVF 的 ST 段抬高。V1-V4 導程主要反映前壁（anterior wall MI）；I 和 aVL 導程反映側壁（lateral wall MI）；V5-V6 導程也反映側壁或心尖部。
Inferior wall MI most often involves the right ventricle, and its classic electrocardiographic finding is ST-segment elevation in leads II, III, and aVF. Leads V1–V4 primarily reflect the anterior wall (anterior wall MI); leads I and aVL reflect the lateral wall (lateral wall MI); and leads V5–V6 also reflect the lateral wall or apex.
✦ 台美臨床差異
美國心臟科照護急性心肌梗塞時，會快速進行心導管檢查；台灣亦然，但依醫院層級及地理位置可能影響處置時間。