I think you probably mean, narrow QRS and incomplete right bundle bunch block (RBBB) I am NOT an expert or even undestand most of them, on all the possible EKG findings, but I would tend to believe your cardiologist when they said not to worry about it since he is able to see all your test and results, and one of the things they reccomend if someone has a complete RBBB, is to do an echo to rule out any problems and if not, no problem, since you've had a few echos if you had one of the structural problems that can cause RBBB, that could be a concern or need any treatment they would have found them. I don't have personal info on incomplete or narrow qrs, because Justin has complete RBBB and wide QRS >180
Many people have complete or incomplete RBBB and have no problems. This might help
http://www.cardiac-risk-assessment.com/heart-information/heart-arrhythmia/bundle-branch-block
"One sometimes will see an interpretation of an EKG described as either an incomplete right bundle branch or incomplete left bundle branch block pattern. The interpretation of incomplete or complete bundle branch block is determined by how wide the QRS complex is when measured over time. If the QRS complex is wider than 0.12 seconds that is considered a complete right bundle or left bundle branch block. If there is a pattern similar to a bundle branch block but the width of the QRS complex is less than 0.12 seconds, we consider that to be an incomplete bundle branch block pattern.
Incomplete right bundle branch block is very commonly seen and can be considered a normal variant of the QRS complex. This is frequently seen in teenagers and does not necessarily represent a serious heart condition"
I'm not sure what you found that has you worried about Brugada syndrome, did you put in your exact info? because, there are quite a few things depending on the different EKG patterns or branch blocks and unless you have the exact pattern a ST
elevation and in this case genes, then you don't have to worry about it.
http://en.wikipedia.org/wiki/Brugada_syndrome.