Validation of euroscore for coronary artery bypass grafting at siriraj hospital

Objective: To access the performance of the EuroSCORE when applied to CABG patients at Siriraj hospital. Material and Method: One thousandfive hundred forty nine patients diagnosed with coronary artery disease (CAD) who underwent isolated CABG between January 2007 and December 2009 was prospectively studied. Results: The patients included 1,102 men and 447 women and had a mean age of 67 years old. The mean additive score in expired and survived groups were 9.65 ± 5.14 and 3.87 ± 3.06. In logistic, score were 25.43 ± 26.31 and 4.88 ± 7.88 respectively (p < 0.001). The best cut-off value of EuroSCORE for prediction of a death rate was 6 for additive score and 10 for logistic score. Area under the curve was 0.831 for the additive score and 0.823for the logistic score. The observed overall mortality rate was 2.0% while the predict mortality was 5.27%. The difference between observed and predicted deaths was significant with additive score and logistic score (p < 0.001). Conclusion: Our results suggest that EuroSCORE is not valid for CABG in Thai patient due to over prediction.