Ectopic beats can also have " triggered activity" which is where cells depolarize early.

异位心搏也有“激发动”，即在细胞提前除极的位置。

And this is how you could tell if the PVC depolarized the atrium or not.

你能由此区分室期前收缩是否除极了心房。

And, to the degree that the heart's in-between, the heart will be depolarized and normal rhythm will, will be restored.

当心脏处于两者之间时，心脏会去极化，恢复正常的心律。

Another type of atrial ectopic focus is a reentrant loop, which is when there's some tissue that doesn't depolarize right.

房异位起搏点是个折返环路，主要发生在当某些组织不能正确地除极的时候。

For those whose compasses were not depolarized there seemed many odd things in these houses.

对于那些罗盘没有去极化的人来说，些房子里似乎有很多奇怪的东西。

The cells of the SA node can depolarize on their own without any external influence.

SA结细胞可以自行去极化而不受外界影响。

Lack of depolarizing flow through the dead segment results in a reduction of R wave activity.

坏死段去极化电流缺失导致R波低。

Normally, all my sites are depolarized at this time, and there is no electrical flow in the cardiac muscle.

正常情况下，所有区域同时去极化，心肌没有电流。

The left ventricle depolarizes NORMALLY toward V6, away from V1, producing a positive deflection in V6, negative in V1.

正常情况下，左心室向V6导联去极化，远离V1导联，V6导联产生正偏斜，V1导联为负偏斜。

In bundle branch blocks, the UN-affected ventricle depolarizes first.

在束支传导阻滞中，未受影响的心室首先去极化。

A shorter than normal PR interval, of less than 3 small squares, signifies that the ventricles depolarize too early.

PR间期短于正常值，＜3个小方格，表明心室去极化过早。

If we unpause this, then everything becomes depolarized, and since there's no difference in charge, now, there's no dipole, and so no deflection.

如果我们时将其“解冻”，那么所有细胞都被去极化了，由于细胞外的电荷没有变化，所以没有双极子，（心电图）上也就不存在任何波形（呈条直线）。

In a normal heart, the two ventricles are depolarized simultaneously by the two bundles and contract at the same time.

在正常心脏中，两个束支同时使两个心室去极化，两个心室同时收缩。

One important effect of the premature depolarization is that the ectopic focus will depolarize the cells of the SA node, causing the SA node to skip a cycle.

过早除极的个重要影响就是异位起搏点将会使窦房结细胞除极，导致窦房结跳过个心动周期。

In this case, after being depolarized, the sinus node waits its 1 second, and then sends another signal and again we carry on as normal.

在种情况下，窦房结在除极之后等待了1秒，然后发放个信号，心搏得以重新正常进行。

When the atria are full of blood, the SA node fires, electrical signals spread throughout the atria and cause them to depolarize.

心房充盈时，窦房结立即发出冲动，电信号会传遍整个心房并使其去极化。

But eventually, the resting membrane potential gets so high that it's above the threshold potential, meaning that once the muscle depolarizes and contracts, it can't repolarize to allow another contraction.

但最终，静息电位变得太高，以至于超过阈值点位，意味着旦肌肉去极化收缩，就不能复极化以进行下次收缩了。

That process started by depolarizing the cell — that is, pushing the cell's membrane potential from negative toward positive, past a threshold that triggered voltage-gated ion channels to open.

个过程是从细胞去极化开始的——也就是说，将细胞膜电位从负极推高到正极，超过了触发电压门控离子通道打开的阈值。

Now, if we measure out the interval between each SA node fire, we see that it should have fired here, but it doesn't because it was depolarized by the ectopic focus.

时，如果我们测量每个窦房结冲动的间隔，我们可以看到它本应在此处发放，但并没有，因为它被异位起搏点除极化了。

Remember that at rest, cells are negatively charged relative to the slightly positive outside environment and when they depolarize, the cells become positively charged, leaving a slightly negative charge in the outside environment.

要记住在静息状态下，细胞带负电，其外部环境则相对稍带正电；当它们去极化时，细胞带有正电，它的外部环境带有负电。