Gender and Diabetes Mellitus Relevance on Outcomes of Coronary Artery Bypass Grafting. A Retrospective Study

Abstract

Purpose: For the group of patients with coronary artery disease (CAD), referred to coronary artery bypass surgery, we sought to asses the relevance of gender and presence of Diabetes Mellitus upon survival rates, within the first 3 years after surgery. Methods: At “Nicolae Stancioiu” Heart Institute, a number of 110 patients were followed up from September 2003 to February 2008, for the following events: ischemia, restenosis, atrial fibrillation, ventricular arrhythmias, heart failure, other events and complications. Ages, gender, presence of Diabetes Mellitus were noted. For the diabetic/non-diabetic (45 diabetic, 65 non-diabetic) groups and male/female groups (27 female, 83 male), we applied in the SPSS program the Logrank and Wilcoxon tests, for quantifying the differences in the survival rates between the groups. Results: No significant differences were found in the survival rates between the groups (diabetic/non-diabetic Logrank test, p=0.71, Wilcoxon test, p=0.86; female/male Logrank test, p=0.7, Wilcoxon test, p=0.95). Also for the subgroup of patients which had in-graft restenosis (46 patients) no significant differences were found between the diabetic/non-diabetic (Logrank test, p=0.36) and gender groups (Logrank test, p=0.4). Mean age for the whole group is 59.2 (61.9 for female and 58.3 for male). Conclusion: Diabetes Mellitus or sex is not significant factors for lower survival rates, in the first 3 years after coronary artery bypass.