
The resultant depolarisation vector (red arrow) produces delayed R waves in leads V1-3, and S waves in lateral leads Normal activation of the left ventricle means that cardiac axis remains normal in isolated RBBBġ) Left ventricular activation via the left bundle (black arrow) occurs normallyĢ) Septal depolarisation (yellow arrows) is thus unaffected, producing a normal early QRS complexģ) Activation of the RV originates across the septum.This produces a secondary R wave (R’) in the precordial leads, and a wide, slurred S wave in lateral leads There is delayed activation of the right ventricle as depolarisation originates from the left ventricle across the septum.

In RBBB, the left ventricle is activated normally, thus the early part of the QRS complex correlating to septal depolarisation is unchanged.M-360 Mixdown 5.1 to 5.In normal cardiac conduction, impulses travel equally down the left and right bundles, with the septum activated from left to right and the formation of small Q waves in lateral leads IR-360 Mono to 5 Channel Discrete Surround processor

IR-360 Efficient Stereo to 5 Channel Discrete Surround processor
