Hi, I've recently been diagnosed with PSVT which was confirmed during a stress test I had whereas my heartrate went from 170-240 just like that. I've had occasional episodes where my heart would race uncontrollably which warranted me getting it checked out. I had an EKG & an echocardiogram & both came back perfectly fine. The cardiologist said that I tolerated the stress test very well, even though I was short of breath that night while playing volleyball! My options were to go on a beta blocker, ablation therapy, or keep it under observation. I've opted, at this point, to keep it under observation & if it worsened or happened frequently, I would then opt for the ablation treatment. My cardiologist said it was non-life threatening based on my reports. I'm just wondering what is considered frequent. Are there underlying causes & other tests that could be performed to rule out what may be causing this sort of problem? I've already had some blood work done & thyroid checked. I'm wondering if severe emotional stress can have this type of affect on a person? Lord knows I've had my share of the stress the past 5 years! Any advice you can give would be greatly appreciated! Thanks!