All patients will be subjected to:~A. Full history taking:~- Including age, sex, history of DM, HTN, dyslipidemia and Body surface area.~B. Holter monitoring for 24 hours:~Heart rate variability~Hidden arrhythmias~Hidden ischemia by monitoring ST segment changes~C. Twelve lead ECG:~fQRS in baseline ECG~QT dispersion.~Tp-Te interval and Tp-Te/QTc ratio~Tp-Te dispersion
The investigators thought to explore arrhythmias outcome - hidden arrhythmias, ECG features: Tp-Te interval and Tp-Te/QTc ratio, fQRS among patients with coronary artery ectasia as compared to normal coronary artery patients.