If the antigens were completely unmatched, then hyperacute rejection can take place within minutes after the transplant.

如果抗原完全不匹配，那么移植后几分钟内就会发生超急性排斥反应。

In these early stages, hyperacute T wave changes are followed by a very charecteristic ECG abnormality in the affected leads.

在这些早期阶段，受影响导联超急性T波改变后，会伴随着非常典型的ECG异常。

In the minutes following a hyperacute T wave changes, the ST segments in leads overlying the myocardial region deprived of arterial blood supply begin to rise above the isoelectric line.

超急性T波改变后的几分钟内，心肌缺血区的导联ST段开始高于等位线。