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Published on: February 16, 2016
Evaluation of TMT abnormalities in asymptomatic persons using myocardial perfusion study
1Dept of Nuclear Medicine, Army Hospital (R&R), Delhi.
The Journal of the Association of Physicians of India
|July 15, 2011
Summary
Positive exercise ECG (TMT) results in asymptomatic individuals, particularly ST-T changes in inferolateral leads, are frequently false positives. This suggests a need to re-evaluate TMT interpretation criteria for high-risk professionals.
Area of Science:
- Cardiology
- Diagnostic Imaging
- Occupational Health
Background:
- Exercise electrocardiogram (ECG), or treadmill testing (TMT), is a common screening tool for high-risk professionals.
- Positive TMT results, especially ST-T changes in inferolateral leads, warrant further investigation.
- Asymptomatic individuals often undergo TMT as part of periodic medical examinations.
Purpose of the Study:
- To analyze the rate of false-positive TMT results in asymptomatic professionals.
- To investigate the diagnostic accuracy of TMT based on ST-T changes in inferolateral leads.
- To determine if current TMT interpretation criteria require revision.
Main Methods:
- Retrospective analysis of 152 asymptomatic individuals.
- Participants underwent myocardial perfusion imaging after positive TMT (ST-T changes in inferolateral leads).
- Comparison of TMT results with myocardial perfusion imaging findings.
Main Results:
- All 152 participants had normal stress myocardial perfusion scans.
- This indicates a high rate of false-positive TMT results in this cohort.
- ST-T changes in inferolateral leads on TMT may not accurately predict myocardial ischemia in asymptomatic individuals.
Conclusions:
- The criteria for interpreting a positive TMT, specifically ST-T changes in inferolateral leads, may need revision.
- Further prospective, multicenter studies are recommended to validate these findings.
- Revising TMT interpretation could improve diagnostic accuracy and reduce unnecessary follow-up procedures.
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