Abstract
In Rapid Access Chest Pain (RACP) service, exercise stress testing (ETT) is the conventional investigation to verify patients' symptoms and the presence of coronary artery disease (CAD). The standard protocol identifies ST segment shift or T wave changes as ischaemic markers that occur with exercise. Clinical practice has shown, however, that absence of these markers does not necessarily exclude a diagnosis of CAD, particularly in patients with multiple risks. There is therefore a serious need to identify other electrocardiographic parameters, which could be of diagnostic value in patients with stable ST segment and T wave function with stress.
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