3 doctors weighed in:

Is a block in the right bundle branch serious?

3 doctors weighed in
Dr. Luis Villaplana
Internal Medicine
1 doctor agrees

In brief: No

Millions of people have rt bundle blocks, heart function remains normal.
As you age, other conduction issues may arise, and of course blood vessel disease, etc.

In brief: No

Millions of people have rt bundle blocks, heart function remains normal.
As you age, other conduction issues may arise, and of course blood vessel disease, etc.
Dr. Luis Villaplana
Dr. Luis Villaplana
Thank
Dr. John Garner
Internal Medicine - Cardiology

In brief: Generally not

Right branch block is, frequently, caused not by complete block in the bundle but by a delay relative to the left bundle.
In this case, there is no risk at all. There are generally three fascicles which supply conduction to the lower chamber. The right bundle is only one of these three, and even with complete loss of the rb, there are still the two fascicles of the left bundle remaining.

In brief: Generally not

Right branch block is, frequently, caused not by complete block in the bundle but by a delay relative to the left bundle.
In this case, there is no risk at all. There are generally three fascicles which supply conduction to the lower chamber. The right bundle is only one of these three, and even with complete loss of the rb, there are still the two fascicles of the left bundle remaining.
Dr. John Garner
Dr. John Garner
Thank
Get help from a real doctor now
Dr. Peter Kurzweil
Board Certified, Internal Medicine
46 years in practice
16M people helped
Continue
108,000 doctors available
Read more answers from doctors