I recently had a nuclear stress test (age 61, had light headed feelings one evening), all turned out normal except have RBBB as detected on treadmill part of the test while exercising.  Had slightly elevated blood pressure for first time in my life as well. I have pectus excavatum (funnel chest) not surgically corrected (well they tried in 1953, 4yrs old, but not successful).  I was told "normal" and sent home, but should I be seeing a cardiologist about all this?

Summarized question: What is RBBB?