I had a visit to the cardiologist today. For years, I have been getting sporadic tachycardia (rapid heart rate), pretty much at random. Usually only a few seconds at a time, but occasionally lasting half an hour or more. And it has been happening more frequently.
I have a pocket-size electronic heart monitor that is pretty slick, but it takes 15 seconds to boot it up, so I can't record the common short spells. But I have gotten some good recordings of the longer events, and I showed the printouts to the doctor on my first visit, a month ago.
I got the full workup: imaging a couple of weeks ago, a holter monitor (wearable ECG) overnight last night, and then a treadmill stress test today. The recordings from the monitor and the stress test showed isolated out-of sync beats that confirmed his diagnosis: reentry supraventricular tachycardia. Which is totally minor and not life-threatening. Whew!
It's not fun, because the longer events leave me quite weak while they are happening, and tired afterwards, but otherwise it is not a big deal. I already made one lifestyle change quite some time ago: when this first started happening, I was a volunteer firefighter. I took myself off interior attack duty, because I certainly did not want to be inside a burning building when it happened!
My wife and I can both relax, now, knowing that, while it is alarming, it is not serious.
The electrodes for the monitor and the treadmill ECG use cheap, nasty adhesive. I am allergic to it, same as I am to the cheap, nasty adhesive on generic estradiol patches. So now, my chest looks like I lost a fight with an octopus. It is covered with bright red, round welts! Oh, well, it was for a good cause.