Peaked T-waves, ST segment elevation, and alterations to the terminal portion of the QRS complex are the early changes of acute myocardial infarction secondary to complete occlusion of a coronary arterial vessel.

T波尖峰，ST 段抬高，以及QRS波群终末部分改变，均是继发于冠状动脉血管完全堵塞后的急性心肌梗死的早期改变。

This is followed by elevation of the ST segments above the eyes of electric line in these leads and this in turn is followed by alterations to the terminal portion of the QRS complex.

随后，这些导联中的ST段抬高至电线上，QRS波群末端改变。

These transient changes to the terminal portion of the QRS complex reflect worsening crisis in the oxygen-starved ventricular wall, and probably result from progressive ischemia and necrosis of the Purkinje fibers a tissue more resistant to death than working muscle.

QRS波群终末的这些短暂变化反映了缺氧心室壁的恶化危机，可能是由于进行性缺血和浦肯野纤维坏死所致，浦肯野纤维是一种比工作肌更耐死亡的组织。