The Role of the QRS in the Heart

The Hysprkinchi system has kind of three bundles, two on the left and one on the right. The most common abnormality is something called the right bundle branch block. And what that means is that it's going to take longer for the ventricular myocardium to depolarize,. That stretches out the QRS over time. It might be that the beat is originating in the ventricles.