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

这些分支称为左右束分支。

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。

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。

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。

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。