Introduction: Coronary artery disease is high-risk comorbidity of COVID-19 infection. Non-elective coronary artery revascularization in COVID-19 patients carries substantial risk. Therefore, it is essential to understand the risk factors and outcomes fully. This study aims to evaluate the prognosis of Coronary Artery Bypass Grafting (CABG) Surgery in patients with COVID-19. Materials and methods: This retrospective cohort study assesses 171 patients who underwent urgent and emergent CABG in Tehran Heart Center from March 2020 to September 2021. The patients were allocated to cases and controls based on COVID-19 infection status. Demographic and clinical features, alongside the complications and outcomes, were compared between the two groups. Results: According to diagnostic criteria, 62 patients were diagnosed with COVID 19 (Case), and 109 patients had no COVID diagnosis (Control). Regarding the demographics and risk factors, hypertension was more prevalent among patients with COVID 19 (64.5% compared to 43.1% p-value= 0.007). Length of hospital stay, ventilation time, and ICU stay time were significantly higher in patients infected with COVID 19. Post Operative complications, including stroke, atrial fibrillation, pleural effusion, blood transfusion, and Inotrope use, were significantly higher in the case group. Mortality rates were also higher in COVID-19 patients with an Odds ratio of 1.53; however, this difference is not statistically significant (p-value 0.44, 95%CI= 0.50-4.01). Conclusion: COVID-19 is associated with a significantly higher hospital stay, ventilation time, and ICU stay. Mortality rates are also higher, albeit insignificantly. Various postoperative complications are also higher with COVID-19.

background and aim: world health organization (WHO) declared the novel coronavirus 2019 outbreak a pandemic on 11 March 2020. No data have been published so far regarding the COVID-19 patients undergoing cardiovascular surgery. Methods: Medical files of 503 patients undergoing cardiovascular surgery were evaluated. Sixty-four patients (12.7%) was diagnosed as COVID-19 cases after the surgery following getting symptomatic or detection of abnormality in their laboratory results. The valve surgery in one positive COVID-19 case was canceled due to his abnormal laboratory finding and suspicion to COVID-19. The patients’ clinical course and survival status were documented and analyzed. Results: Coronary artery bypass graft (CABG) was the most type of surgery in both positive and negative COVID-19 groups. In-hospital mortality was demonstrated in 6 (9.4%) and 10 (2.3%) patients in positive and negative COVID-19 groups, respectively. CABG had been performed in five COVID-19 deaths while one of the expired cases underwent valve surgery. The median of white blood cell (WBC) count and C-reactive protein (CRP) was higher and the percentage of lymphocyte was lower in patients who expired. Conclusions: We recommend to postpone all elective surgeries till the end of the crisis and limit the surgeries to only emergency situations. In these cases, the patient should be screened and get necessary medications if highly suspected. In borderline surgical indications, especially in individuals with history of contact to infection, we suggest to screen for COVID-19 before the surgery and monitor the patients closely afterward. All health-care staffs should use full personal protective equipment.