心肌梗塞急性發作時，護理師的首要處置為何？

面對急性心肌梗塞（AMI），護理師需遵循 ABC（呼吸道、呼吸、循環）原則。心肌梗塞的核心問題是冠狀動脈阻塞導致心肌缺氧，給予氧氣能增加血液中的氧含量，從而改善心肌缺氧狀況，是護理的第一優先處置。其他選項如建立靜脈路徑（IV line）或心電圖（ECG）檢查雖然也是重要程序，但均屬於輔助治療與診斷步驟，在穩定氧氣供應後再執行。

The priority intervention for acute myocardial infarction is administering oxygen to improve tissue perfusion and reduce cardiac workload, aligning with ABC (Airway, Breathing, Circulation) principles. While obtaining an ECG and establishing IV access are critical diagnostic and therapeutic steps, ensuring adequate oxygenation addresses the immediate myocardial ischemia. Pain management with morphine is important but secondary to stabilizing oxygen levels.