Moments later, a wave of repolarization goes through.

一段时间后，复极波又会经过。

Also, the ST segment and T wave, which represent repolarization, will often be directed opposite the QRS complex.

同时，代表复极的ST段和T波通常与QRS主波方向相反。

It represents the brief interval of time between depolarization and repolarization.

它表示去极化和复极之间的短暂时间间隔。

Clinically, it is used as a measure of the patient's repolarization time.

临床上，它被用作测量患者复极时间的指标。

The result is a slowed repolarization hence a prolonged duration of action potentials and refractory period.

这导致复极化速度减慢，因此延长动作电位和不应期。

Early ECG changes in hypokalemia are mainly due to delayed ventricular repolarization.

低钾血症早期心电图改变主要是心室复极延迟所致。

The ventricular contraction is seen as a QRS complex, and the ventricular repolarization, and therefore it's relaxation, is seen as a T-wave.

心室收缩以QRS复合波群的形式展现，心室复极以及因此发生舒张的波形，则视为T波。

And then the T wave represents the period of recovery, or relaxation, of the ventricles, or ventricular repolarization.

然后T波代表心室的恢复期，或舒张期，或心室复极期。

When a cell depolarization happens during ventricular repolarization, it's called an early-afterdepolarization, and if it happens after repolarization is finished, it's called a delayed-afterdepolarization.

当一个细胞去极化发生于心室复极化期间，它就叫做早后除极；如果它发生于复极化结束之后，它就叫做迟后除极。

But prolonged repolarization z' may increase the risk of torsades de point a type of tachycardia caused by after depolarizations.

但是延长了的复极化 z’可能会增加由去极化后引起的尖端扭转型室速的风险。

Regardless of the originating ventricle, a premature ventricular contraction often has an abnormal T wave since the timing and direction of repolarization will be abnormal as well.

不论起源心室是哪个，室性期前收缩由于去极化的时程和方向也会异常，而经常有一个异常的T波。

The exact mechanism here, though, is unclear, but it might be due to an ion channel dysfunction that leads to an unexpected change in the membrane potential during or right after repolarization.

尽管这里确切的机制还不清楚，但它可能是由于一个离子通道的功能障碍导致了复极化期间或之后细胞膜电位发生意料之外的变化。

As hypokalemia becomes more severe especially in patients with other heart conditions, the inward current may exceed the outward current resulting in early after depolarization and consequently extra heartbeats prolonged repolarization may also promote re-entrant arrhythmias.

随着低钾血症变得更加严重，尤其是其他心脏病患者，内向电流可能会超过外向电流，从而导致早期去极化后，因此，额外的心跳延长复极也可能促进折返性心律失常。