@Pianistwithwings Get it checked out, but understand an anesthesiologist isn't a cardiologist. He/she might not even have been a doctor, but instead a CRNA.
When I got my Class 1 FAA medical, I brought my EKG home. Nothing of import was stated at my doctor's appointment. My wife, who works as an extender (NP) in a Peds Cardiac ICU and manages the patients, saw my EKG and flipped out. She said I needed to see someone right away. She then took the EKG into work and had one of the cardiologists look at it.
He said I was fine.
Again, don't ignore it, but know not everyone in medicine knows what they're talking about all the time (including ER docs, which is also scary).