What does RBBB indicate in EKG readings?

RBBB stands for Right Bundle Branch Block, which is a condition observed in electrocardiogram (EKG/ECG) readings. In a patient with RBBB, the electrical impulses that travel down the right bundle branch are delayed or blocked. This results in a characteristic pattern on the EKG where the right ventricle is activated later than the left ventricle.

In terms of EKG interpretation, RBBB can be identified by specific changes in the QRS complex, including a prolonged duration, typically over 120 milliseconds, as well as an RS pattern in leads V1 and V2 and a wide S wave in leads I and V6. Recognizing RBBB is essential as it can indicate underlying conditions such as coronary artery disease, pulmonary disease, or structural heart abnormalities. Proper identification and understanding of RBBB can significantly impact patient management and treatment decisions.