Hello, for over a month I've been having palpitations and I have been diagnosed with Super Ventricular Tachycardia. I don't have my ECHO and 24 hour tape tests until next week to make it official and for some kind of treatment to start. I am very nervous that an episode with happen again, the longest one so far has been an hour and a half. I just want to make it to these tests and not have to go to A&E again. I've stopped smoking the small amount I did (5-7 a day), cut out the tiny bit of caffeine I had left (sugar free pepsi) and don't drink very much either. I'm finding it very hard not to spend all day waiting for it to kick off again, does anyone have any advice please?