The electrode sensors were attached to the chest which help to record the activity during the test.  The test itself can measure the size and shape of the heart as well as pumping capacity, among other measurements.

It was surely interesting to see the heart in motion on the video screen, watching the valves open and close with every beat.  It’s amazing to realize that the heart is continually in motion, efficiently pumping blood to the rest of the body and responding to any increases in activity, or exercise.  The doctor’s office called me back today, 2 days later telling me everything looks normal.  That’s great news!