With any sort of abnormal EKG
finding, including an incomplete right bundle branch block (IRBBB), it is important to place this in the appropriate overall clinical context. I strongly encourage you to discuss this with a cardiologist
, who can help determine if any additional testing is necessary.
Your heart has it's own electrical system. An electrical impulse starts in your right atrium, one of the top chambers of your heart, and travels to the other chambers, causing a normal heart beat. The electrical system of the ventricles, or bottom chambers of your heart, is divided into a right and left bundle. When there is an abnormality of one of these bundles, that chamber of the heart is activates through a slower system, which leads to a bundle branch block. A right bundle branch block itself is typically not a problem, but it may indicate a more serious underlying problem. Such conditions include pulmonary hypertension, pulmonary embolism, or congenital heart disease. An incomplete right bundle branch block means that the signal to your right ventricle is somewhat slowed but not completely interrupted. A fast heart beat cannot cause an incomplete bundle branch block; it can only cause a complete bundle branch block. I strongly encourage you to consult a cardiologist, who can help determine whether any additional testing, such as an echocardiogram
, is necessary to determine the cause of this EKG finding.