Results of Off-Pump Coronary Artery Bypass Surgery in Patients with EuroSCORE≥5

Background: The lack of reliable data on the possibility, safety and results of OPCABG in patients with high surgical risk hinders the further wide introduction into clinical practice of such operations. In this regard. conducting a comparative evaluation of the results of OPCABG in patients with low and high surgical risk seems to us a worthwhile project. Materials and Methods: During the period between 2015 and 2017, 310 OPCABG operations were performed. Patients were divided into 2 groups depending on the EuroSCORE risk calculator value. Group 1 consisted of 130 (41.9%) patients with a high surgical risk (EuroSCORE >= 5), and Group 2 consisted of 180 (58.1%) patients with a low surgical risk (EuroSCORE<5). Results: We could not find between the two groups significant differences in the number of mean grafts per patients (3.12 in Group 1 and 3.13 in Group 2), in operation times, or in the level of morbidity and mortality (1.5% in Group 1 and 1.2% in Group 2). All intraoperative conversions to on-pump CABG (5 cases or 3.8%) occurred in patients of Group 1 (P=0.008). Conclusion: The OPCABG operation in patients of high-risk group is a safe method and can be performed without compromising the completeness of myocardial revascularization with the same low mortality as in low-risk patients. The most common type of complication in high-risk patients is on-pump conversion, which at earlier and planned implementation is not reflected significantly at the level of hospital mortality.