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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Why Does My Stress Test Always Come Out As Inconclusive For Myocardial Ischaemia?

I am 64 years old. I do not have any heart pain. I went in for a stress test and it came out inconclusive for miocardio ischemia. This happens every time I take a stress test. Then my doctor wants a PET test. Every time I took the PET it came out normal. They said that my heart rate did not reach maximum during the stress test. If that were the case shouldn t they have run the test again. I walk 2 to 3 miles a day and do not have any problems. Can you possibly shed some light on this. I do not like the feeling the PET test gives me. I have exercised my whole life with no problem.
Mon, 8 Sep 2014
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Cardiologist,  's  Response
Target heart rate for TMT = 85% of (220 - age of patient). If your age is 64 than you have to attain heart rate of 132 per min 85% of (220-64=156). If you fail to increase heart rate to 132 per min than your TMT will be inconclusive. This means TMT can not diagnose coronary artery disease.
In a sports person this finding is not uncommon.
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Why Does My Stress Test Always Come Out As Inconclusive For Myocardial Ischaemia?

Target heart rate for TMT = 85% of (220 - age of patient). If your age is 64 than you have to attain heart rate of 132 per min 85% of (220-64=156). If you fail to increase heart rate to 132 per min than your TMT will be inconclusive. This means TMT can not diagnose coronary artery disease. In a sports person this finding is not uncommon.