Babak Nasiri - Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
Mohammad Ali Eghbal - Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
Mohammadreza Taban Sadeghi - Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
Razieh Parizad - Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
Ali Asghar Darzi - Medical School, Babol University of Medical Sciences, Babol, Iran
Parisa Nazeri - Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
Mohsen Abbasnezhad - Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
Naser Khezerlou Aghdam - Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran

Objectives: Nowadays, vitamin D۳ (VitD۳) deficiency is among the most common dietary deficiencies around the world. Researchers have paid more attention to VitD۳ because it is a vital element of the body and has a plausible relationship with various diseases such as diabetes mellitus type II. This study was conducted to examine the prevalence of vitamin D۳ deficiency and its relationship with blood sugar levels in people with diabetes undergoing coronary artery bypass grafting (CABG).Methods: An observational study was conducted in ۲۰۱۷ in Shahid Madani Hospital, Tabriz, Iran, for ۸ months. Due to the use of census sampling, only ۱۱۵ patients with diabetes and open-heart surgery were enrolled in the study. A questionnaire collected information on the participants' demographics, medical history, VitD۳ levels and blood glucose levels. Data were analyzed using SPSS ver. ۲۵. Independent t-test was used to compare quantitative data, and chi-square test was used to compare categorical variables. Results: One hundred and fifteen out of ۳۴۸ patients who had CABG surgery were diabetic. Moreover, ۲۴.۷% of patients with diabetes had VitD۳ deficiency. The results of the coefficient-correlation test indicated that there was a significant relationship between the mean blood glucose level and VitD۳ level (p < ۰.۰۵). Conclusions: The results of this study suggest that patients with diabetes can improve their blood glucose control after CABG surgery by taking sufficient VitD۳. Therefore, it should be considered as a principle of the hospital operation to prescribe VitD۳ prior to surgery for these patients.

Blood glucose level, Cholecalciferol, Coronary artery bypass, Diabetes mellitus