Why the study?
Do exercise-induced QRS wave amplitude changes improve the detection of coronary artery disease and left ventricular dysfunction compared to conventional ST segment changes in patients with angina?
Population
Patients with and without prior myocardial infarction, presenting with typical or atypical angina pectoris.
Comparison
Exercise-induced QRS wave amplitude changes… vs Conventional ST segment changes.
Design
Cohort
Authors
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QRS amplitude changes during exercise should not guide CAD or LV dysfunction diagnosis; leaves open incremental value over ST analysis in prospective studies.
Do exercise-induced QRS wave amplitude changes improve the detection of coronary artery disease and left ventricular dysfunction compared to conventional ST segment changes in patients with angina?
Exercise-induced QRS wave amplitude changes do not provide relevant diagnostic value for detecting coronary artery disease or left ventricular dysfunction.
Van et al. (1982) studied this question.
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