I am 30 years old, I started having syncope 5 months ago, my question is...I have been diagnosed with probably having SVT's...the electrophysiologist told me he thinks its AV node re-entry, atrial, or inappropriate sinus tachycardia...but he won't know until the EP study is done.
But I am confused because from everything i've read people with ordinary SVT's are not symptomatic unless they have tachycardia, and I am. I feel generally ill with malaise and fatigue almost all the time, lost my exercise tolerance (ex weight lifter)... I have had a severe headache disorder for 3 years,
One recent episode in particular was very disturbing, for about an hour I felt severe lightheadedness, weakness, temulousness, nausea and a sense of doom. During this time my vitals were absolutely normal 115/70 pulse 85 glucose 88. After an hour of this feeling very ill, my pulse started shooting up to 140, then 150, then back down to 110 for a while, then hovering at 130 for a while before it died off, during the tachycardia I was very hypertensive with readings such as 195/105 and I felt extremely hot with flushing in the face and the feeling that the air temperature was 90 degrees I had an intense urge to get in a cold shower but couldn't stand up because of lightheadedness, then as the tachycardia died off my mouth became so dry I couldn't talk without being tongue tied.
then I was left feeling beat up from the inside out and traumatized well into the next day.
So my confusion is due to the fact I am so symptomatic even without tachycardia? Might I have some other type of disease which is causing the illusion of SVT's but there is more underlying cause, if so what can it be? I've had a brain MRI, echo, standard labs, CTX and of course many EKG's.