@amymichc Welcome to Mayo Clinic Connect.
Living in the Pacific Northwest, I am not sure how far you may be from Oregon Health and Science University [OHSU] in Portland area, a great teaching hospital. It is ranked Number 1, and I know several people who have gone there. My husband travels the 4 hours to go there annually for his kidney transplant checkup; we live in southern Oregon.

In the Seattle area is Harborview Medical Center, part of the University of Washington system [but being in mid-Seattle, it is a real pain to access] My sister worked there as an RN for 35+ years, and her commute was always a nightmare!

If you feel you need to get a second opinion, then follow your gut! Cardiac issues know no age range, is my thought. I recall a specialist telling me the same thing a couple decades ago about a condition I have, and my response was to cock my head over to one side and tell him. "Well, I just proved you wrong!"

I hope you will return if you have nay more questions, and let me know what you decide.
Ginger