Yes, i have super-ventricular tachycardia (sp?), and have had ever since i can remember. at least since age 10 or 11 or so. sometimes it’s frequent, sometimes rarely happens. when it happens, i have super-duper-super-speedy heartbeat, and it can last — going on and off — for hours. very unpleasant, and uncomfortable, but since i’ve more or less always had it, actually totally not scary for me.
after, like, two decades of watching this happen, i’ve noticed a few things that trigger it for me. and if i am mindful not to do these things, i get episodes much, much less frequently.
the things that set it off for me are:
• being run-down, and tired, especially staying up all night in college
• not eating much; serious dieting
• quick, sudden movements where knees come towards chest — this could be squatting quickly, or suddenly bending over to grab something, etc.(it has something to do with the diaphragm in your mid-section kicking off the electrical impulse that sets the heart racing by mistake)
• exercising a lot and THEN doing one of the above — especially the quick knees-to-chest kind of motion, say — will often set it off
i’ve also found a few ways to try to control it;
• as i said above, avoiding certain motions when tired, run-down, etc, means it happens much less frequently.
• if it does happen, i splash ice water on my face, or submerge my face in icy water (!!) this was suggested by my doctor, and it often does work. again, it’s something about the electrical impulse being flashed on or off. hitting the icy reset button!
• if it’s going on and on and on, i lie down with my feet elevated above my head, to basically make sure i don’t fall over (as has happened to you)
All this said, not to be paranoia-inducing, or overly dramatic, and I hope you forgive me for saying this, but: just to be extra-double sure, please go and TWO OPINIONS on your diagnosis? i know this sounds semi-inappropriate to mention, but i had a friend, maybe ten years ago, who thought she had exactly the same thing as me…. we’d compared notes on our symptoms. but we found out — too late– that she didn’t have the same thing as me. they had made a mistake. (to be brutally frank, she fell into a coma after blood was deprived from her brain, following a bad episode of what turned out to be something other than simply what you/me/we have. i know that the typical case of what i have (which, after all, hasn’t had ANY real effects on my health at ALL… and i can safely just ignore it) starts in adolescence, so if yours is sudden, that’s just another reason to just make sure everything is cool by getting a second opinion.
in other words: i’m sure it’s totally cool, and like the rest of us you’ll be totally fine and dandy! but always question the doctors, just to be extra-double sure!