I would question how you are recording a pulse of 250 beats per minute...its roughly 4 beats per second. I have seen patients with that sort of heart rate and it feels like the pulse is vibrating rather than beating. Even with a stethoscope it was impossible to count the heart rate. Only with the use of EKG equipment did we get an actual accounting of the heart rate. Secondly it is very unlikely that your heart is beating like that and you are not symptomatic in any way (lightheadedness, shortness of breath, nearly passing out, chest pain). I m not saying it couldn t happen but it doesn t exactly add up. ADDENDUM: You say you are getting 64 beats in 15 seconds - as I said above, I have tried to take someone s pulse whose heart was moving that fast and could not discern a pulse. At that rate your heart does not have time to fill with blood to even produce a full pulse. The EKG s you had were static, that is you were not moving. You do need a work up by a cardiologist. There is a test called a tilt table that can replicate the action of you bending over while you are hooked up to the monitoring equipment. I would bet this is a supraventricular tachycardia. If it is there is a procedure - ablation therapy - that can complete cure the problem for life without medication. Until then there are medications that can control the rate. Good luck.