الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Coronary artery disease (CAD) continues as the major cause of morbidity and mortality in developing and developed countries. The American Heart Association reports that around 16 million people greater than or equal to 20 years old in the United States have cardiovascular disease. Coronary artery disease (CAD) contributes to approximately one-third of all deaths in people older than 35 years. Understanding of coronary artery disease (CAD) has greatly improved over the past several decades. Over the last decades, technological developments have reinforced the role of noninvasive imaging for detection, risk stratification, and management of ischemic heart disease patients. Cardiac magnetic resonance (CMR) imaging integrates both functional and morphological characterization of the heart to detect presence, acuteness, and severity of ischemic heart disease by evaluating myocardial function and wall motion, the existence and extent of myocardial ischemia, edema, and scar formation. Currently established clinical protocols have illustrated their diagnostic and prognostic value. The accurate determination of myocardial muscle with or without viability is of great importance in the management of patients with cardiac dysfunction. Viable muscle has a possibility for contractile recovery, therefore, a patient with ischemic cardiomyopathy and ventricular dysfunction may improve his functional capacity after myocardial revascularization and, as a result, have improved survival. The identification of infarcted muscle, even in silent infarction (occult infarction), has a great importance because this tissue can be a substrate for ventricular tachy-arrhythmia, becoming one of the leading causes of sudden death. Therefore, this study aimed to explore whether preoperative myocardial fibrosis quantified by cardiac magnetic resonance (CMR) can predict the occurrence of rhythm disturbance in the early postoperative period following CABG operation. This observational cohort single center retrospective study included data of 92 patients who underwent CABG operation and CMR for viability before the surgical intervention at Magdy Yacoub Foundation “Aswan Heart Centre” from January 2014 till December 2022.