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Comparative predictive value of ST-segment depression or angina during early and repeat postinfarction exercise tests
Chest
|December 1, 1984
Summary
Angina symptoms, with or without electrocardiogram (ECG) ST-segment depression, better predict multivessel coronary artery disease than ECG changes alone in post-myocardial infarction patients. Persistent abnormalities confirm disease presence.
Area of Science:
- Cardiology
- Clinical Medicine
- Diagnostic Testing
Background:
- Predicting multivessel coronary artery disease (CAD) post-myocardial infarction (MI) is crucial for guiding treatment.
- Early risk stratification aids in managing patients after MI.
Purpose of the Study:
- To compare the predictive value of ST-segment depression on electrocardiograms (ECGs) versus angina symptoms for identifying multivessel CAD.
- To assess the utility of repeat exercise tests in confirming multivessel CAD post-MI.
Main Methods:
- Evaluated 93 patients post-MI using modified treadmill exercise tests before discharge.
- Conducted repeat exercise tests at six weeks for 36 patients.
- Compared electrocardiographic (ECG) ST-segment depression and angina symptoms for predicting multivessel coronary artery disease.
Main Results:
- Angina symptoms, irrespective of ST-segment depression, were superior predictors of multivessel CAD compared to ST-segment depression alone.
- Persistent ischemic abnormalities on repeat treadmill tests indicated multivessel CAD.
Conclusions:
- Angina is a stronger predictor of multivessel coronary artery disease than isolated ECG ST-segment depression in post-MI patients.
- Repeat exercise testing can confirm the presence of multivessel coronary artery disease by identifying persistent ischemic abnormalities.