The Role of 2-Dimensional Speckle Tracking Echocardiography in prediction of significant coronary artery

Background: Speckle tracking echocardiography is new technique to evaluate left ventricular function.Objective: To evaluate sensitivity and specificity of two dimension global longitudinal strain ( 2D-GLS) estimated by speckle tracking echocardiography (2D-STE) to predict the diagnosis and degree of severity of CAD( coronary artery disease) in patient suspected to have stable ischemic heart diseases (IHD).Patients and Methods: An observational cross-sectional study, patients underwent echocardiography (TTE), left ventricular (LV)systolic function were estimate initially, (calculate LVEF) then assessment of LV global and regional longitudinal strain (GLS) were calculated next.All patient underwent coronary angiography in the catheterization unite and according to the result of coronary angiography, we separated patients into two groups: one how have significant (≥70%) coronary arteries stenosis (group A),and another group with non- significant(