@myg68
When I read your post I thought and you have confirmed you are getting a stress test that is done stationary with medication that increases heart rate and a contrast to see it clearly. That is completely different test than a treadmill test.

I saw one poster gave you a treadmill stress test that is not what you are getting as you posted.

I had the test you mentioned way back in 2001. What it does is maker your heart beat faster and iwith the contrast injected they can see how you heart is functioning.

I have also had 3 pulmonary stress tests at Mayo Clinic where you wear a mask and electrical sensors. That test measures my bodies response to increasing exercise and from wearing the mask that can actually see how well you are providing oxygen to your body. It is quite hard on you but that is what it is designed to do stress you physically from exercise.

This stress test requires a treatmill or bike and slowly they raise the rate to bring your heart rate and breathing up to test how well your heart and cardiovascular system is working.

When I had the test you are having I sat is a big lounge chair and just like another poster posted if was over in a couple of minutes. Yes I could feel my heart pumping faster but it was just a weried feeling mentally not physically. It is a strange feeling to have your heart working when you are not exercising.