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LBBB without symptoms

I'm confused.  When I was in my 40's over ten years ago it was uncovered that I have a left bundle branch block.  I never had any symptoms and in fact was still doing competitive masters swimming doing very challenging workouts and had strong breath recovery.  In a normal physical the physician ran an stress test and noticed the irregularity.  I had a low ejection fraction upon further investigation but again I've never noticed any discomfort or shortness of breath, really any issues with intense exercise.  I had a heart catheterization at the time and the cardiologist said I'm fine and it is like having green eyes instead of blue, nothing to worry about I have a healthy heart muscle.  I still worry because I never seem to find any encouraging information about LBBB.
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5536886 tn?1455827346
Most people with LBBB don't experience symptoms- unless you have symptoms or another condition they usually don't overly worry about it.  

Do you have specific concerns about LBBB since researching it?
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