Could It Be SVT or Sinus Tach? Please Help!

I would suggest visiting a doctor and asking to get either a 24 hour heart monitor or 30 day monitor (depending on how frequently it happens). None of us can make a diagnosis here, nor can a doctor without seeing what's going on, so it's important to get an actual recording of your heartbeat during the worst times. To be honest, telling the difference between then can be kinda hard even with a recording... One clue would be in how it starts and stops. SVT usually starts and stops abruptly. For me, one second my heart rate will be a normal 70bpm and the next it's racing at 180bpm. There's no transition, it just hits all of a sudden. Likewise it often stops abruptly as well, with no cool down. If your heart rate ramps up and gradually comes down, it's somewhat more likely it's sinus tachycardia but that's no guarantee...

My son has an anxiety disorder and his heart rate has never gotten up that high. I think it may be SVT? SVT can last a few seconds, minutes or hours. Before I had my ablation, my heart rate was high like yours, which caused nausea, dizziness, light headedness . I went one time by ambulance and by the time I got to the ER, my heart rate was normal. That happened to me 4 times last year. Was always back to normal by the time I got to ER.

SVT has a very abrupt onset and offset, it's like the flick of a switch, there is no gradual increase or decline it's just straight up and then bang stops and beats normally. It doesn't sound like svt but go to your doctor raise your concerns get a monitor and if there's anything I'm sure it will pick it up. It sounds like classic anxiety symptoms, your bodies constantly in fight or flight mode, you'll be very sensitive to adrenaline now. Stay calm and see a doctor I'm sure you'll be ok stay strong 

Hi just wanted to give you a bit of positive input regarding your heart rate if as you have put it is declining back down on its own then that is a good point that it's slowing back to a lower more normal rate in my case once it it's svt and very fast rate there it stays and even adenosine in hospital does not reduce it in my case I'm now into double figures Of cardioversion shocks to put my rhythm back to normal so to touch on previous persons comment svt doesn't always stop like a light switch ! Everyone is different I've had a ablation and mine has not worked although I was told this immediately after the op , always get medical advise , I think as awful as it is at least you revert back which is a good thing I hope you get to the bottom of it as some people are in svt and it goes back after minutes others need urgent medical care as there's keep going . I'm sure there's a chance the onset of panic attacks could increase the heart rate and decrease as you calm down see doctors oppinion . Hope this helps 

I too have anxiety and svt, but l did not know of the svt until I had an episode that just stayed in a constant ridiculously high beat and I had to go to the ER. There they diagnosed the svt, and then I saw a cardiologist who also confirmed it. 

Hi not sure if this is helpful but I suffer from anxiety and have SVT. Funnily enough they don't usually occur at the same time! I tend suffer from anxiety about specific things (like if I have offended some one or I have a really important work day and can't sleep etc). When I feel really anxious I do always kind of get a pain in my chest, it's more of an emotional pain but it does feel physical as well but I know instinctively its cause by anxiety and is not an actual physical problem though-  I also notice my heart beating loudly if trying to sleep and feeling anxious-sometimes its going a bit faster and sounds very loud- (but not svt fast maybe up to 100 at the most). SVT feels a very different experience for me, it's more physical than emotional (and ironically maybe) I'm not usually feeling anxious when it starts. It's like a I might be on my laptop working and having a cup of tea and suddenly my heart switches from a normal beat to 200 just like that, as if someone had turned a light switch. And svt doesn't actually make me feel anxious in the same way, it's a very physical experience but not so emotional, I can feel light headed and if it doesn't stop after an hour or two after trying all the manovers etc, then I go to A and E.  Sometime I feel a bit upset when I have SVT but not so anxious, know it's different for everyone. It's like my body is malfunctioning and I am aware of it doing what I need to to help it stop, sometime I do get a bit of chest pain with svt but it feels almost like my chest is bruised.

Where as anxiety makes my chest feel tight, my whole body feels flooded with chemicals and quite often I have the emotional feeling of being trapped.. Funnily enough even though I have anxiety, sometimes quite badly, it never seems to trigger my svt- my triggers are being tired/dehydrated and coffee.

Hope this helps somehow. I know some people do feel very anxious with SVT, and I probably will experience them both together at some point, but just trying to describe the different feeling. I've had anxiety a lot longer than svt and initially because I suffer from anxiety friends and doctors just assumed I was getting anxiety palpitations, even though I kept explaining I wasn't  feeling specifically anxious when I got the palpitations. It was only when I went to A & E that the svt was diagnosed with and ECG.  Anyway sorry for very long reply :-)

Everyone is saying that it's like a suddent onset, I am 27 Btw Maximum heart rate is like 190. However when this happened it was gradual. It increased quickly but gradually to 150, I stood up and started walking back and forth it went up to 160, then I think I started to get scared that that's when it increased to 184 for a second then back down once I sat down and started breathing. Does that sound like SVT?