Doctor insights on:
Why Are Left Bundle Branch Blocks Worse Than Right Bundle Branch Blocks
The cause important: The right bundle is relatively easy to damage, so relatively small injuries can create it. The left bundles (two of them, one easy to injure, one hard to damage) require more damage to interfere with their function, so they are associated with "worse" heart disease with the prognosis inherent in your question. Cause is important, so need to talk to your doctors to sort those out. ...Read more
The location: Obviously the location of the electrical block in the conduction of electric impulses from the atrium to the ventricles is different. The electrical signals travel to the two ventricles through the left and the right bundle, the left then bifurcates to two fascicles itself. In my experience, the non-pathologic presence of right bundle branch block is more common. ...Read more
Various causes: Left bundle branch block is a pattern seen on an EKG indicating an abnormal or different pathway of the electrical signal that causes the heart muscle to contract. It is most often due to an underlying medical condition such as hypertension, a heart attack, an enlarged heart from any cause and only when serious conditions are excluded is it felt due to the benign aging of the conduction pathway. ...Read more
Usually not: Left bundle branch block (lbbb) develops when 2/3 electrical "wires" in the heart stop working. Many patients can have LBBB and no sx. Lbbb usually reflects aging of the heart but can be seen in a variety of pathological heart conditions. Rarely, medicines which affect the speed of electrical conduction in the heart can cause LBBB which reverses. This technically not cellular regeneration. ...Read more
Found on EKG: It is caused by a block in the "electrical wiring" of the heart which affects the appearance of the ekg. It most of the time indicates a significant problem with the heart but can at times be benign. ...Read more
Nothing to severe: Left bundle branch block (lbbb) is a pattern on the ECG that indicates that the heart's electrical waves are following an unusual path. It is common in older age, and usually due to scarring of the pathway. It may cause no symptoms and need no therapy. It can lead to marked slowing that needs a pacemaker. A new LBBB can also be a sign of a heart attack. ...Read more
LBBB: LBBB is like pregnancy - You have it or you don't. You can't have a "small LBBB". (you could have an incomplete LBBB). Whether or not it disqualifies you would depend on the reason it's there, so you need a cardiac evaluation - usually consisting of, at least, an echocardiogram and stress test. ...Read more
Cure?: "cure" suggests that LBBB is a disease but it is not. It is associated with underlying structural heart disease and that is what should be addressed. Lbbb causes no symptoms and it requires no treatment. ...Read more
Sometimes: A left bundle branch block is a finding on an EKG (the electrical tracing of your heart.) it shows that something has altered the way your heart conducts electrical impulses. Chemotherapy can do it, but so can heart disease. Your doctor should rule out other causes for a left bundle branch block before assuming chemotherapy is the cause. ...Read more
Perhaps: Rheumatic fever and rheumatic heart disease refers to what we call a pancarditis. That means that the entire heart is playing in this condition. That's why we take strep infection so seriously. And yes I left bundle branch block can occur but is not the most common occurrence when someone has rheumatic heart disease or rheumatic fever. ...Read more
What can cause a new left bundle branch block in a teen athlete? And can stress and anxiety maybe cause it?
Why does my EKG change every year? Sometimes says right bundle branch block and this time a left bbb. Can they go away on their own? I'm 43 female
No: So it is not common for ECG interpretation to vary that much, that is, one year RBBB and another year LBBB as the etiologies of the two are diffferent. In a young person, a new LBBB, merits an ischemic evaluation and medical followup. A RBBB is more benign. Could your ECGs have been misintepreted or are you sure they are yours? Also, sometimes a BBB can develop at different rates. Go see a cardiol ...Read more
Depends: Depends on what caused the LBBB (congenital or after a heart attack), and how much you are drinking. Alcohol in low doses (1-2 drinks/day in men, 1 drink/day in women and older men) is often considered a tonic for the heart and raises "good cholesterol." in higher doses, it can damage the heart, raise blood pressure and cause heart rhythm problems. Talk to your internist or cardiologist about it. ...Read more
Not the same: Both are types of fatigue in the heart's wiring system. 1st degree heart block is when there is a delay in the signal getting from atria down to ventricles. That's minor. In more advanced heart block, some beats don't get through at all. In lbbb, there is no block between atria + ventricles but there is a delay in the signal spreading within the ventricles, which doesn't cause symptoms by itself. ...Read more
Maybe yes: Among the bad things smoking marijuana does to the heart and lungs are the quick rise in heart rate and blood pressure, the increased demand for oxygen by the contracting heart muscle, followed by vasodilation (blood vessels relax and dilate) with a drop in blood pressure as smoking mj continues; the abnormal rhythms in the upper heart, and maybe abnormal ventricular (lower heart) rhythms. ...Read more
I am 21, what can left bundle branch block mean on my EKG? It shows up whether my HR is normal or fast
Rate related delay: You have a "rate related LBBB" meaning that as your heart speeds up, the conduction through the His-Purkinje network of fibers (conducting tissue in the heart muscle) take a longer time than normal to repolarize (prepare electrically for the next impulse). As I said in my previous post to you, trust your EP doctor. ...Read more
I hear my heartbeat in my head. I just find out I have a left bundle branch block. Had a heart cat everything fine. Why do I hear this sometimes?
An ECGinterprets RIGHT BUNDLE BRANCH BLOCK, LEFT POSTERIOR FASCICULAR BLOCK, BIFASCICULAR BLOCK. I dont' feel any dizziness. Is it normal? Cure for it?
Not normal: Those findings on EKG are not normal, and are permanent. They can be caused by defects in the conduction system of the heart that you have had since birth, by previous heart attacks, or remodeling of the heart in response to ongoing hypertension. You should consult with a cardiologist for further evaluation. ...Read more
After 9 days AVR Surgery if left bundle branch of heart is found blocked, then is it advisable to have pacemaker. EF is 50%. Heart rate is 70. Age 58.
I had ekg, nuc stress test, and angiogram. Was told I have left bundle branch block could this be cause of arrythmia and cause no other problems?
Possibly: You did not say if you were having symptoms (dizziness, palpitations, fainting, chest discomfort). Left bundle branch block is not an arrhythmia, but an abnormality in the heart's "wiring." it needs to be observed, but with normal tests as you described, and at your age, absent a family history of heart disease or sudden death it's unlikely to be dangerous at this time. ...Read more
I took an EKG today and the results say "sinus rhythm left atrial abnormality incomplete right bundle branch block" What exactly could that mean?
Except incomplete RBBB is a NORMAL variant. The"atrial " comment needs more information!
Hope this is helpful
Dr Z ...Read more
Female age 45 have complete left bundle branch block for 7 yrs recently had mild hypokinesia CT angio result no block. What to worry? Effect of stress?
- Talk to a doctor online
- Is left bundle branch block reversible?
- Is there a cure for a left bundle branch block?
- What are differences between left bundle branch block and right bundle branch block?
- What are signs and symptoms of right bundle branch block?
- What is the treatment for a right bundle branch block is this serious?
- Intermittent left bundle branch block