In this study we analyzed patients glucose levels taken before and after coronary artery bypass surgery. The data are taken from University of Sarajevo Clinics Centre-medical documentation of Heart Center from January 1st. 2007 to October 31st. 2007. https://www.roneverhart.com/Asus-ROG-Zephyrus-GU502LV-BI7N8-15-6-4K-3840x2160-IPS-Intel-i7-10750H-2-6-GHz-16GB-1TB-SSD-NVIDIA-GeForce-RTX-2060-6G/