Frequency of Mortality for Coronary Artery Bypass Grafting and Its Associated Factors in Mazandaran Heart Center

Background and purpose: Coronary artery bypass grafting (CABG) is used in treating coronary artery disease. The aim of this study was to determine the frequency of mortality for CABG and its associated factors in Mazandaran Heart Center, Iran. Materials and methods: This cross-sectional study was carried out in 600 patients. Incidence of death was recorded during CABG and before discharge. Associated factors and surgery complications were also investigated. Results: The patients were 52.7% males and mean age of the subjects was 62 ± 11 years old. About 65% of the patients were overweight and obese. Hypertension and diabetes were seen in 57.2% and 52%, respectively. Death occurred in eight (33.1%) cases within one month following CABG, and there was no significant difference in incidence of death between males and females (P< 0.578). Among the patients 12.2% developed kidney failure and 3.7% had surgical site infection. We observed significant association between mortality and surgical site infection (P <0.031). Conclusion: In this study, surgical site infection was an important risk factor for post-CABG mortality. Infection was the major risk factor for death in first few days after CABG. Therefore, healthcare team should take appropriate actions to prevent surgical site infection following CABG.