A RBBB is present in 0,2 per mill of the 'normal' population. A RBBB can be present in healthy subjects. It is also seen in hypertrophy and overloading of the right ventricle. It is always present after a heart operation in which the heart is opened through the right ventricle. Usually it does not has to be treated.
Caution has to be applied if one sees the development of a RBBB for example by an infarction.
It can be followed by a complete or total block. The discharge of the right ventricle is normal but delayed. QRS-complex of 0,11 sec. An incomplete right bundle branch block is caused by a partial damage of the right bundle branch. As with a complete RBBB one has to be sure that it has a pathological cause.