Hi. I was diagnosed with MG mid-December, but because of symptoms, I believe I've had it since I was a kid. I've had increasing issues with breathing when exercising (not asthma) for 30+ years, which now leads my heart rate regularly to exceed 190 bpm if I'm exerting myself with exercise (registered as high as 211 bpm). I'm concerned about possible damage I might have done to my lungs or heart from having my heart rate so high.

In November when I suspected MG, I went to the ER because of saliva aspiration & pain in muscles in my chest). I think the test they did is called EKG (where they hook 10 or so cords to various parts of the body & chest) and the reading was normal.

Because of my concerns about high heart rate & breathing difficulties for so many years, my neurologist (who's new to treating MG) is now referring me for an EKG. For those more experienced than me, does that sound like the proper approach or should I point the neurologist in a different direction? Should I be seeing a cardiologist specifically rather than just getting an EKG? Are there any tests I should be doing for my lungs or specialist I should be seeing for that? Thanks for your ideas.