RESUMEN
Background: Gensini (G score) is one of the most widely used scoring systems in cardiology. It is an objective method to determine the coronary artery disease severity according to angiographic findings. The aim of this work was to assess the relation between G score and the chronicity of diabetes mellitus (DM) in cases undergoing coronary angiography. Methods: This prospective cohort research was carried out on 300 cases with diabetes mellitus (DM) on antidiabetic treatment who were referred to diagnostic coronary angiography for suspected coronary artery disease. G score was calculated for measurement of the coronary artery disease severity. During the period from October 2020 to Aril 2022 Results: Age, smoking, chronicity of DM, cholesterol, triglycerides test, and electrocardiogram were statistically prominent positively related with G score, while female gender was statistically significant negative relation with it. Also. Mean G score was statistically prominent higher in cases with ischemic changes than in cases without ischemic changes. Therefore, the chronicity of DM was statistically significant predictor of G score. Conclusions: significant positive relation between the G score and the chronicity of DM.