Key result
Current CABG scores overlook long-term outcomes, underscoring the need for models predicting ≥10-year prognosis.
Why the study?
Existing cardiac surgery risk scores focus on 30-day and in-hospital mortality after CABG and lose accuracy outside their regions of development, while no universal model exists to assess long-term prognosis, particularly in the Russian population.
Existing cardiac surgery risk scores (STS score and EuroSCORE II) primarily assess 30-day mortality and lose predictive accuracy outside their original development regions, highlighting the need for recalibrated models that can evaluate long-term prognosis after CABG, particularly in the Russian population.
Answers are grounded in this paper and cite their sources.
Existing CABG risk scores may lack accuracy outside development regions; leaves open the need for local recalibration and long-term prognostic tools.
Highlights Existing prognostic scores for postoperative complications in CABG tend to be most accurate in the geographic regions in which they were developed. Not in all countries, modern risk scores show high predictive accuracy, since when existing scales are validated in different populations, a decrease in predictive accuracy is observed, which indicates the need to recalibrate these models. The importance of developing a tool to assess the long-term prognosis after CABG is due to the available data from observational studies regarding the decrease in long-term survival 10 years or more after surgery compared with the general population. To date, no models have been developed to assess long-term prognosis after CABG, which indicates the existing difficulties in creating a single universal scale. In order to increase the potential of CABG, it is necessary to create a modern model that allows assessing risks in the long term when performing surgical myocardial revascularization. Absract Optimizing clinical decision making and choosing patient treatment tactics largely depend on accurate prediction of individual risk. Today, in cardiac surgery, two prognostic models are mainly used – STS score and EuroSCORE II, which assess the risk of surgical mortality within 30 days after CABG, as well as the risk of complications after CABG based on demographic and clinical indicators. These scores have been a reliable prognostic tool for many years, but the need for regional adjustment to improve their prognostic accuracy in different populations is debated. Existing models are mainly aimed at estimating the risk of in-hospital and 30-day mortality after CABG. The decrease in the predictive accuracy of existing models is actively discussed in the world literature. The search for an optimal model for assessing long-term prognosis in the Russian population remains relevant.
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Kuzmichkina et al. (2026) conducted a review in Coronary artery bypass grafting (CABG). Prognostic risk models (STS score, EuroSCORE II) was evaluated on In-hospital, 30-day, and long-term (≥10-year) mortality and postoperative complications after CABG. Existing CABG risk scores (STS, EuroSCORE II) only estimate 30-day mortality, highlighting the need for a recalibrated model to assess long-term (≥10-year) prognosis.
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