Prognosis of diabetic coronary artery bypass graft surgery patients

Background: Diabetes mellitus (DM) is considered as mortality and morbidity risk factor for coronary artery bypass graft surgery (CABG). Studies revealed that there are controversies concerning the results of a post coronary surgery diabetic patients. The aim of our study was the evaluation of the short-term outcomes in this group of patients.Methods: This was a single-center retrospective study of 180 patients that were subjected to CABG between January 2014 and January 2016 in Zagazig University Hospital, Zagazig, Egypt. Sixty-one patients (34%) were diabetic (group I) and 119 patients (66%) were non-diabetic (group II). During follow-up period the hospital mortality, complications and major cardiovascular events were analyzed. All patients admitted with a diagnosis of diabetes had an HbA1c ≥ 6.5% or fasting blood glucose (FBG) ≥ 126 mg/dL (7.0 mmol/L).Results: Operative mortality was 3% (n = 2) in the diabetic group and 1% (n = 1) in non-diabetic patients (p = 0.3). Euro score was predictably higher in diabetic patients (1.2 vs 0.84, p = 0.001). The study of the risk factors associated with hospital complications revealed that the absence of diabetes was a protective factor for hospital complications but statistically insignificant. The rate of major cardiovascular events at 2 years period of follow-up in diabetic and non-diabetic groups was (12/50) 24% and (16/93)17%, respectively (p = 0.43).Conclusions: The improvement in management of DM patients leads to acceptable operative mortality post-CABG and decrease the incidence of complications and events in the short-term follow-up period