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Application of European system for cardiac operative risk evaluation (EuroSCORE) in coronary artery bypass surgery for Taiwanese

Division of Cardiovascular Surgery, Cardiovascular Center, Taichung Veterans General Hospital, Taichung, Taiwan, ROC

^* Corresponding author. Tel.: +886-4-2359-2525x5063; fax: +886-4-2374-1323. (E-mail: ychang{at}mail.vghtc.gov.tw).

The applicability for Taiwanese cardiac surgery is unclear. The preliminary goal of our study was to evaluate the validity of EuroSCORE in coronary artery bypass surgery (CABG). From January 1999 to January 2004, 801 consecutive adult patients who received primary or re-operative off- and on-pump CABG in our institute were collected. Both simple additive and logistic scores were calculated. Patients were categorized into low-risk group (simple additive score 0–2), medium-risk group (simple additive score 3–5), and high-risk group (simple additive score 6 plus). Mean age was 68.0±10.1 years. Patients aged 75 or more were 27.6%. Male-to-female ratio was 3.8:1. The mean simple additive and logistic scores of all patients were 5.0±3.5 and 8.0±11.9, respectively. The observed overall average mortality rate was 10.6%. There were 18.6% of patients in low-risk group, 40.0% in medium-risk group, and 41.4% in high-risk group. The mortality rate was 3.3% in low-risk group, 5.3% in medium-risk group, 19.0% in high-risk group. The area under the curve (c-index) was 0.75 for the simple additive score and 0.74 for the logistic score. Our results suggest that despite demographic differences, our study demonstrates preliminarily that EuroSCORE is valid in CABG for Taiwanese.