I am nearly 50 years old and since the age of 25 have had PVCs. I am an avid runner and vegan, as well. I have had numerous work-ups including echos and stress tests and nothing wrong has ever shown up. I do drink a lot of caffeine and have come to accept the fact that I may get more PVCs as a result.
Over the past couple of years, I have been noticing a new sensation -- a strange-feeling heart beat -- when I stand up after sitting for a long time or after sneezing. It doesn't feel like a PVC because there is no sense of a delayed or skipped beat. Also, this "abnromal" sensation lasts anywhere from a second or two to maybe 15 seconds. My pulse feels normal -- not fast, slow, or irregular -- but my heart beat still feels funny.
What's interesting is that it tends to happen more frequently when I haven't run for 24 hours.
My cardiologist suggested it might be a vasovagal reaction. I have passed out a few times as a result of severe nausea if I get a stomach illness, so I do have some vasovagal tendencies.
My BP and pulse are normal. I do have a high IgE count due to lots of allergies (eczema and asthma). I use albuterol when I run.
Any thoughts on what this strange heart beat might be?
It sounds like your doctor has an idea as to what it could be, and it appears that they might be suspecting something non cardiac. One way to tell is to attach a heart monitor to you while you are experiencing symptoms. If you have an abnormal heart rhythm, it would probably show up.
However, this does seem like a question for your doctor ahead of getting the heart monitor. I read online that one of the serious adverse reactions to the drug you are taking is rapid heart beat, so if you think you might be experiencing a rapid or irregular heart beat, it probably deserves the doctors input.
Congratulations on being a runner for so long. I too find that my heart beat is better when I run regularly. My heart does indeed race if I drink too much caffeine, or overdo on running, so I try to keep it all in balance as much as possible. I also think I have experienced some of the allergy like symptoms you mention while running regularly. I think caffeine, diet, and exercise may have a link to it.
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