The ECG criteria for a left bundle branch block include: QRS duration greater than 120 milliseconds; Absence of Q wave in leads I, V5 and V6; Monomorphic R wave in I, V5 and V6 ...

The ECG criteria for a right bundle branch block include the following: QRS duration greater than 120 milliseconds; rsR’ “bunny ear” pattern in the anterior precordial leads (leads V1-V3) ...

Left Bundle Branch Block If your cardiologist spots LBBB on an EKG, they may run tests to figure out the cause. Unlike RBBB, left bundle blocks are more often a sign of tissue damage.

Bundle branch blocks are abnormalities of the heart’s conduction system that show up an electrocardiogram (ECG), which is a tracing of the electrical activity in the heart.

A left bundle branch block is a type of disruption of the heart's electrical impulses that can signal an underlying heart condition. ... It may cause no symptoms, but an electrocardiogram (ECG) ...

DEAR DR. ROACH: I am a 63-year-old male who, during a routine EKG, showed a left bundle branch block. Can you tell me anything about this diagnosis, what it means, any treatment, future concerns ...

Right bundle branch block is a conduction abnormality with the heart that can result in an abnormal heart rhythm. ... (ECG), a test that evaluates the heart’s electrical activity.

Q. Please explain a bundle-branch block on the left side of my heart. Cause? Cure? Complications? After viewing my EKG, my anesthesiologist referred to the condition as a heart abnormality and sugg… ...

When a left bundle branch block appears on an ECG, the next step is usually an echocardiogram. This noninvasive imaging test shows whether the heart structure looks normal.

Dear Dr. Roach: I am a 63-year-old male who, during a routine EKG, showed a left bundle branch block.Can you tell me anything about this diagnosis, what it means, any treatment, future concerns, etc ...