الفهرس 
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Abstract
Diabetes Mellitus (DM) is one of the most common diseases in the world and is acquiring epidemic proportions. Its prevalence is growing in developed and developing countries. More than 5% of adults have this disease, with prevalence arising from 1% in the youth to 13% in those older than 60 years. Because of the increasing frequency of diabetes in the past 30 years, the importance of cardiovascular disease attributable to diabetes will continue to increase, even if the incidence in the non-diabetic population continues to diminish [1].
Diastolic myocardial dysfunction with a normal left ventricular ejection fraction is clinically important because it accounts for approximately 50% of all hospital admissions for acute heart failure [7]
Patients with diabetes often present with exertional dyspnea and reduced exercise tolerance, which are due directly to diastolic myocardial dysfunction [6, 8, 9].
Problems with clinical assessment of diastolic dysfunction associated with diabetes are not always detected early[146]. Therefore, more sensitive imaging techniques are required for the early detection of myocardial dysfunction [15].
The aim of the study was to assess the role of exercise stress echocardiography in detection of sub-clinical diastolic dysfunction in asymptomatic diabetics.