I don't drink, smoke, drink coffee and seldom tea, mostly herbal tea that is caffiene free, and I have racing heart/palpitations.  Also, it sounds like blood is rushing in my whole upper body, especially my ears.  I am having problems sleeping and relaxing that is causing more problems.  Does anyone else out there relate to this problem.  I have had all types of heart test, blood test CBCs, Thyroid test, ECHO's, EPS, holster monitors, threadmill test, ultrasounds, catscans, MRI's, you name it, the numerous doctors I have been too say there is nothing wrong with my heart.  Something is wrong!  Is there anybody else out there with this problem?

I feel my own pulse beating, my heart feels and sounds like it is trying to break out of my chest or ears.  The sound and feeling is more intense in my ears,  but I feel it in my whole upper body, including my arms and hands.  Is there anyone else out there like me.  I feel like a time bomb about to explode at any moment.  The feeling is overwhelming more and more each day, and this has been going on for over 10 years.  I feel like at any moment I will break or crackup.

I have been to numerous cardiologist, each and everyone of them said they could not find anything wrong.  I have every heart test in the book.  They suggested that I go to a psychologist, which I did and she said I have anxiety, panic attacks, and severe depression.  She put me on .25 mgs of Xanax, which I have been told by my primary physician that's a child's doseage, and an antidepressant.  I have stopped taking them, because they did not help at all. 

Can someone explain supraventricular tachycardia more in detail?  What are the symptoms?  I have gone to a cardiologist and a psychologist.  What is a cardioelectrophysiologist?  And, last but not least, what is a cardiac abiation?