DEAR DOCTOR K: I recently had an ECG that showed that I have a "left bundle branch block." What does this mean? DEAR READER: When your heart beats, it does so in response to electrical signals. Your ...

Please provide your email address to receive an email when new articles are posted on . Left and right bundle branch blocks are associated with increased rates of pacemaker implantation after ...

Almost one-third of patients undergoing transcatheter aortic valve replacement (TAVR) with a balloon-expandable device develop new-onset left bundle branch block, although the condition resolves by ...

QRS duration of > 120 milliseconds rsR' "bunny ear" pattern in precordial leads Slurred S waves in leads I, V5, and V6. Remember that T wave inversions and ST segment depression is normal in leads V1 ...

QUEBEC, QC — A new study shows that patients who harbor preexisting right bundle branch block (RBBB) face a significantly higher risk of death 2 years after transcatheter aortic-valve replacement ...

LBBB is linked to electrical abnormalities, causing inefficient heart pumping, dilation, and systolic dysfunction. The study found LBBB associated with increased heart failure risk, surpassing other ...

Dr. Keith Roach writes a medical question-and-answer column weekdays. Dear Dr. Roach: My 35-year-old son recently complained of some chest pain. He went to his doctor, and it was determined that he ...

You are able to gift 5 more articles this month. Anyone can access the link you share with no account required. Learn more. DEAR DR. DONOHUE: I had a physical exam about one month ago and had my first ...

(HealthDay)—Left bundle branch block (LBBB) is associated with a smaller degree of left ventricular ejection fraction (LVEF) improvement compared with other QRS morphologies, according to a study ...

The health concern: An abnormality in the cardiac electrical system known as a bundle branch block. Why it's in the news: It's not, actually. This topic actually came to me from a concerned colleague ...