Abstract

Coronary artery disease (CAD) is a major health concern globally, with a particularly high burden in South Asian countries like Bangladesh. Patients with suspected or established chronic coronary syndromes (CCS) are: (i) patients with suspected CAD and ‘stable’ angina symptoms, and/or dyspnea; (ii) patients with new onset of heart failure (HF) or left ventricular (LV) dysfunction and suspected CAD; (iii) asymptomatic and symptomatic patients with stabilized symptoms < 1 year after an ACS or patients with recent revascularization (iv) asymptomatic and symptomatic patients with stabilized symptoms >1 year after initial diagnosis or revascularization; (v) patients with angina and suspected vasospastic or microvascular disease; and (vi) asymptomatic subjects in whom CAD is detected at screening[1]. The prevalence of chronic stable angina (CSA) in Bangladesh has been reported to be 25.9% [2]. However, Bangladesh is a small country with vast population and CAD is becoming a significant burden on health care services in Bangladesh as well with a high mortality [3]. The South Asian countries of India, Pakistan, Bangladesh, Sri Lanka and Nepal contribute the highest proportion of the burden of Cardiovascular Diseases (CVDs) compared to any other region globally [4-6].ECG has been widely used for cardiovascular risk assessment for long as one of the recent explanations for the development of life threatening ventricular arrhythmias. Determination of the QT dispersion by means of a standard ECG at rest is a marker of diagnosis of CAD [7]. The 12-lead electrocardiogram (ECG) is the most readily available noninvasive test for the detection of cardiac disease .

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