Bundle branch block – blockage within left or right bundle branches.

束支传导阻滞-左右束支传导阻滞。

Most often, the aberrancy is due to a right bundle branch block because that's the one that has a longer refractory period.

最常见的，这个异常冲动是由于右束支阻滞所引起的，因为它有更长的不应期。

In this situation, the depolarization wave conducts down the left bundle branch and then through the ventricles aberrantly, resulting in an abnormally wide QRS complex.

在这种情况下，除极波向下传导到左束支，然后异常地穿过心室，导致一个异常增宽的QRS波群。

The names " left bundle branch block" and " right bundle branch block" indicate the side that is affected.

“左束支传导阻滞”和“右束支传导阻滞”提示一侧受影响。

These branches are known as the right and left bundle branches.

这些分支称为左右束分支。

Some people with bundle branch blocks are born with this condition.

一些束支传导阻滞患者先天就有这种疾病。

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。

In RIGHT bundle branch block the initial septal activation is unchanged.

在右束支传导阻滞中，初始间隔激活未改变。

In LEFT bundle branch block septal depolarization is REVERSED, from right to left, giving a negative wave in V1.

左束支传导阻滞时，室间隔从右向左反向去极化，V1导联呈负波。

This bundle is then divided into right and left bundle branches which conduct the impulses toward the apex of the heart.

然后，这个束分为左，右束支，它们将脉冲传导到心尖。

This bundle is then divided into left and right bundle branches which conduct the impulses toward the apex of the heart.

然后，His束分为左束支和右束支，它们将脉冲传导到心尖。

The impulse is now passed from the bundle branches to the terminal branches of the intrinsic conduction system known as the Purkinje fibers.

脉冲现在从束支传递到被称为浦肯野纤维的内在传导系统的末端分支。

Another scenario, though, is if a depolarization wave from an atrial ectopic focus gets through the AV node but get sent through the ventricles abnormally like when a bundle branch is in refractory.

另一种情况，如果从房性异位起搏点来的除极波通过了房室结，但却在一个异常的时间到达心室，比如当一个束支处于不应期。

If the ectopic focus originates in the left ventricle, the wave will depolarizing the left ventricle first and then the right ventricle, which produces a QRS complex that looks like a right bundle branch block.

如果异位起搏点源于左心室，这个波将会首先除极左心室，然后是右心室，这会产生类似于右束支阻滞的一个QRS波群。

If the ectopic focus originates in the right ventricle, the wave will depolarize the right ventricle first and then the left ventricle, and this produces a QRS complex that looks like a left bundle branch block.

如果异位起搏点源于右心室，这个波将会首先除极右心室，然后是左心室，这会产生类似于左束支阻滞的一个QRS波群。

Left and right bundle branch blocks are diagnosed and differentiated by looking at ECG recordings obtained from the CHEST leads, which register signal movements in a horizontal plane.

通过观察从胸导联获得的心电图记录，可诊断和鉴别左束支传导阻滞和右束支传导阻滞，这些心电图记录了信号在水平面上的运动。