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

异位心搏也有“激发活动”，即在细胞提的位置。

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

另一类房性异位起搏点是一个折返环路，主要发生在当某些组织不能正确地的时候。

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

你能由此区分室性期收缩是否了心房。

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

对于那些罗盘没有去化的人来说，这些房子里似乎有很多奇怪的东西。机翻

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

当心脏处于这两者之间时，心脏去化，恢复正常的心律。

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

SA结细胞可以自行去化而不受外界影响。

7.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化。

8.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，表明心室去化过早。

9.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导联去化，远离V1导联，V6导联产生正，V1导联为负。

10.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化，两个心室同时收缩。

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

正常情况下，所有区域同时去化，心肌没有电流。

12.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，电信号传遍整个心房并使其去化。

13.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.

过早的一个重要影响就是异位起搏点将使窦房结细胞，导致窦房结跳过一个心动周期。

14.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.

在这种情况下，窦房结在之后等待了1秒，然后发放另一个信号，心搏得以重新正常进行。

15.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，这意味着一旦肌肉去化收缩，就不能复化以进行下一次收缩了。

16.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.

这时，如果我们测量每一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化了。

17.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.

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

18.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；当它们去化时，细胞带有正电，它的外部环境带有负电。

19.With low levels of extracellular calcium, voltage-gated sodium channels are less stable and more likely to open up, which allows the cell to depolarize more easily, and makes the neuron more excitable.

当细胞外钙的水平较低时，电压门控钠离子通道不稳定，更容易开放，这使细胞更容易去化，并使神经元更易兴奋。

20.Most cells in your body only depolarize after being triggered by an external stimulus, or by a neighboring cell, in a long chain reaction of action potentials that's set off by the nervous system.

你体内的大多数细胞只有在被外部刺激或邻近细胞触发后才去化，这是由神经系统引发的动作电位的长链反应。