Abstract
Abstract: Objectives: Our study aimed to determine EuroSCORE II’s performance in patients with non-ST-segment-elevation acute myocardial infarction undergoing coronary artery bypass grafting (CABG). Methods: A retrospective study of 307 patients with non-ST-elevation acute myocardial infarction undergoing CABG at Hanoi Heart Hospital (Hanoi, Vietnam) from January 1, 2020 to December 31, 2022. Patients were divided by the urgency of operation (emergency and non-emergency) and surgical risk (low: EuroSCORE < 2%, intermediate: 2 - 5%, high: > 5%). Discrimination accuracy was determined by the area under the receiver operating characteristic curve (AUC) and calibration by the observed/estimated (O/E) ratio. Hosmer-Lemeshow tests examined the correlation between EuroSCORE II and mortality in 30 days. Results: AUC and O/E ratio were 0,8117 (CI 95%: 0,67 - 0,95) and 0,85 overall. Regarding urgency of operation, discriminative accuracy and O/E ratio were effective in emergency patients [AUC: 0,8681 (0,67 - 1,00) and O/E 0,96] but were not effective in non-emergency patients [AUC: 0,6665 (0,51 - 0,82) and O/E 0,64]. Regarding surgical risk, AUC and O/E ratio were 0,9316 (0,86 - 1,00) and 1,13 in low-risk patients; 0,5118 (0,06 - 0,97) and 0,94 in intermediate-risk patients; 0,9552 (0,91 - 1,00) and 0,78 in high-risk patients. Conclusions: EuroSCORE II is an effective and accurate tool for estimating the surgical risk of patients undergoing CABG in non-ST-segment-elevation myocardial infarction, especially in emergency and high-risk patients.
Published Version
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