We organized our study as a retrospective archive scan. Following the permission we received from the local ethics committee to scan the patient files (decision no: 2020/85), patients who underwent isolated coronary bypass operation at Kütahya Health Sciences University Evliya Çelebi Training and Research Hospital between 2017-2019 were examined. Inclusion criteria comprised patients who were diagnosed with diabetes mellitus and underwent an isolated coronary bypass operation for the first time. Patients who underwent beating heart surgery, presented to the emergency department with acute MI and started ’ticagrelor’ treatment, and those who died within the first 24 hours postoperatively were excluded. In addition, the amount of drainage before re-exploration was used for the scoring systems in patients who were explored due to bleeding. Demographic characteristics and hematological parameters were determined according to the blood samples obtained preoperatively, at the closest date to the operation day. Since our study is focused on early postoperative bleeding, it includes the first 24 hours of postoperative follow-up, because bleeding and related complications are likely to occur in the early period. The amount of drainage and blood products used in the first 24 hours postoperatively were recorded.
This study was based on a prospective multicenter study in Europe, e-CABG (clinicaltrials.govIdentifier:NCT02319083) . The bleeding scores (Papworth, Will-Bleed, Track, Trust) were compared with the E-CABG bleeding grades and analyzed to find which was more convenient for our patient population. In addition, significant parameters were determined, and it was aimed to lay the foundations of the ORS by using these parameters in larger studies.
E-CABG is a multi-center study conducted across 6 European countries (Germany, Italy, England, France, Sweden, Finland) and 16 centers 18. In this study, risk was calculated by scoring after grouping according to the blood products and amounts transfused.