Final answer:
RBBB stands for Right Bundle Branch Block, an EKG abnormality where the QRS complex is altered due to delayed depolarization of the right ventricle, resulting in a wider than normal complex. It may indicate an underlying cardiac issue.
Step-by-step explanation:
RBBB is the abbreviation for Right Bundle Branch Block, a condition that indicates an abnormal finding on an EKG. The EKG is a graphical representation of the electrical activity of the heart, and it includes several key components such as the P wave, QRS complex, and T wave. In a normal EKG, these components follow each other in a predictable pattern that reflects the proper conduction of electrical impulses through the heart's conduction system.
In the case of RBBB, the shape of the QRS complex is altered because the electrical signals are not conducted normally through the right bundle branch, which delays the depolarization and contraction of the right ventricle. As a result, the QRS complex becomes wider than normal. This may or may not significantly affect the overall heart function, but it is an important abnormality to recognize as it could have underlying causes or implications for the patient's health.