What is a complete right bundle branch block in the heart?

RBBB. This is a disorder of the conduction tissue of the heart that is found by electrocardiogram that signifies slightly prolonged conduction through the ventricles.
A pattern on an EKG. Right bundle branch block is the name given to a specific pattern of the electrical activity of the heart seen on an electrocardiogram(ekg). This pattern is considered benign and usually does not indicate a serious problem with the heart. Some people develop this as they get older and it has been found to be not related to any increased risk of heart attacks or need for a pacemaker.