stress testing

[beth54]

I have unoperable CAD.  I had a MI 2 years ago, Now my doctor wants me to have a walking cardiolite stress test.  Why?  I already know my LADs are blocked, and I am not a candidate for CABBG.  I'm scared to have the test.  Im male, 58, and a 32 year insulin dependant diabetic.

[beth54]

Thank you.  Your timely response is greatly appreciated.  Informative as well.
beth54

[kenkeith]

The stress test may be used to evaluate one's exercise tolerance and that information provides ability to assess prognosis and treatment.

For instance the treadmill can measure in METs (metabolic equivalent tasks) the energy expended at a given level of exertion.  At a given MET level, vital signs are monitored, heart rate, respiration, etc.  For a perspective 1 MET is the amount of energy to quietly sit, 2-4 METs to walk up a flight of stairs ( 7 METs usually qualifies for surgery.  Ten METs is very good condition, etc.

No need to be scared. Vital signs are monitored and the test will be discontinued if signs and symptoms indicate stoppage. Several years ago my stress test was discontinued after 7 minutes and didn't get to 7 METs...I believe the test is 20 minutes to complete.