Mary Lou, don&#39;t be afraid.  I&#39;ve had 2 Nuclear Stress tests.  Mine sounds a little different to others.  They bring this nuclear stuff and inject it - no side effects and it&#39;s completely out of your system in a few hours. Just a regular stick in the arm.  You then wait in a waiting room for it to circulate through the body/heart etc.  Then they put me in some type of an X-Ry machine where the dye shows what they are looking for - comfortable machine.  Then  they put me on the treadmill with all the monitoring stuff attached to me this is the part I don&#39;t like.... I  guess that&#39;s why they call it a stress test.  That&#39;s it - no big deal.  Don&#39;t be concerned.