The primary cause of toxicity is eating, drinking, and breathing toxins and chemicals on a regular basis, whether you are aware of it or not. We live in a toxic world; chemicals and toxins are everywhere.
Causes of RBBB. 1  Right ventricular hypertrophy / cor pulmonale. 2  Pulmonary embolus. 3  Ischaemic heart disease.  Rheumatic heart 1  disease. Myocarditis or cardiomyopathy.  Degenerative disease of the conduction 1  system. Congenital heart disease (e.g. atrial septal defect)
Right Bundle Branch Block. In RBBB, activation of the right ventricle is delayed as depolarisation has to spread across the septum from the left ventricle. The left ventricle is activated normally, meaning that the early part of the QRS complex is unchanged.