If they were suspicious of CAD, they would have pursued additional tests. Good results
on an echocardiogram, nuclear stress test
and home monitoring is GREAT! As for the SVT, have you tried the atenolol? Beta blockers work differently for different people. I was able to take propanolol, but could not take atenolol. Don't give up on the meds; it's just a matter of finding the one that works best for you.