Predictors of Myocardial Viability in Patients with Coronary Artery Chronic Total Occlusion by Myocardial Perfusion Imaging

Coronary artery disease (CAD) still remains one of the leading causes mortality in many countries with more than 17 million deaths worldwide. This study aimed to assess predictors myocardial viability patient coronary chronic total occlusion (CTO) by Myocardial Perfusion Imaging. Methods: included 100 patients previous angiography (CA) which they detected that have or vessel CTO. And were divided two groups: Group 1: Viable Myocardium, and 2:  Non-Viable Myocardium. Patients subjected complete history taking, general local physical Examination, 12 Lead ECG, Laboratory investigation serum troponin, conventional Echocardiography, Diagnostic angiography, Single photon emission computed tomography (SPECT). male no females included. Their mean age was 56±8 years. 66% showed viability, while 34% not viable. There statistical difference between viable groups regarding MPI; all non-viable group shows scar reversable ischemia, 68.2% show reversible 31.8%had mixed p < 0.001. EF could predict AUC= 0.992, at cut off value above 46%, sensitivity 0.949 specificity 0.934. IVSD 0.950, 6.1 mm, 0.974 0.967.