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Updated: Sep 27, 2026
Surgical Swine Model of Chronic Cardiac Ischemia Treated by Off-Pump Coronary Artery Bypass Graft Surgery
Published on: March 27, 2018
[Retrospective evaluation with Euroscore of postoperative mortality after coronary artery bypass grafting]
Rimantas Benetis1, Sarūnas Kinduris, Arimantas Dumcius
1Clinic of Cardiac Surgery, Kaunas University of Medicine Hospital, Eiveniu 2, 3007 Kaunas, Lithuania. kinsar@one.lt
Insights
The EuroSCORE models accurately predict overall mortality for coronary artery bypass grafting patients. However, these risk-adjusted scores are not reliable for predicting individual patient outcomes.
Area of Science:
- Cardiovascular Surgery
- Medical Statistics
- Health Outcomes Research
Background:
- Coronary artery bypass grafting (CABG) is a common surgical procedure.
- Accurate prediction of mortality risk is crucial for patient management and surgical decision-making.
- Existing risk-adjusted models, such as EuroSCORE, aim to quantify this risk.
Purpose of the Study:
- To evaluate the predictive accuracy of risk-adjusted EuroSCORE models for in-hospital mortality in individual patients undergoing CABG.
- To assess the reliability of EuroSCORE in predicting outcomes for a specific patient cohort.
Main Methods:
- Retrospective analysis of 1698 isolated primary and repeat CABG patients operated between January 1997 and December 2001.
- Pre-operative risk of death was calculated using EuroSCORE models.
- Comparison of predicted risk with actual in-hospital mortality, using an accuracy score to assess reliability.
Main Results:
- A total of 80 deaths (4.7%) were observed.
- Patients who died had high mean predictive EuroSCORE scores (average 11.0+/-4.3).
- The EuroSCORE average ranged from 3 to 21.
Conclusions:
- The EuroSCORE models demonstrated high accuracy in predicting overall mortality rates within the studied CABG population.
- Despite accuracy in aggregate prediction, the EuroSCORE models were found to be inaccurate for predicting mortality in individual patients undergoing CABG.
Objective:
This retrospective study was undertaken to evaluate the accuracy of risk-adjusted EuroSCORE models in predicting mortality in individual patients who are undergoing coronary artery bypass grafting.
Material And Methods:
The study population is a consecutive series of 1698 isolated primary and repeat coronary artery bypass grafting patients, inclusive patients in cardiogenic shock or resuscitation, operated in Kaunas Heart Center from January 1997 to December 2001. The pre-operative risk of death was calculated with EuroSCORE models and then compared with the actual outcome. The accuracy score was used to evaluate the reliability of each score to predict the individual outcome. The studied event was in-hospital death, defined as mortality during hospital stay, which was unlimited in time and included a stay in a secondary hospital without discharge home.
Results:
Eighty deaths (4.7%) were observed. The age of this patients was 66.0+/-9.5 years, 73.7% were male and 3.7% were repeat procedures. In most patients who died the mean predictive scores were high. The EuroSCORE average was 11.0+/-4.3, with a range from 3 to 21.
Conclusions:
The EuroSCORE presurgical predictive models were highly accurate to predict overall mortality, but were inaccurate to predict mortality in individual patients.
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