ArticleBMC infectious diseases2026
Machine learning-based prediction of sepsis-induced myocardial injury: external validation and SHAP interpretation.
Article in BMC infectious diseases, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Regulated cell death-induced coagulation dysfunction in sepsis.Journal of thrombosis and thrombolysis · 2026Review
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15 authors.
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Abstract
backgroundSepsis-induced myocardial injury (SIMI) is a common complication in sepsis patients with poor prognosis. Consequently, its early accurate prediction is crucial for optimizing clinical management.
methodsWe collected data on 14,208 patients with sepsis from the MIMIC IV database, and used the Bootstrap Sampling to handle unbalanced data. 70% of sepsis patients were selected randomly from the MIMIC-IV database, and feature selection was performed using a Boruta algorithm. Six machine learning prediction models (Decision Tree, GBDT, AdaBoost, Logistic Regression, Random Forest, CatBoost) were constructed. The remaining 30% of patients were utilized to validate the model's accuracy. Additionally, local data from the Intensive Care Unit (ICU) of Zunyi First People's Hospital were employed for further model validation. Model performance was assessed using AUC, decision curve analysis, PR curves, calibration plots, and SHapley Additive Explanations (SHAP).
resultsA total of 1882 sepsis patients were enrolled, with a SIMI risk prediction of 43.3%. Univariate analysis identified significant differences in multiple indicators between SIMI and non-SIMI groups (p < 0.05). Among six machine learning models, the CatBoost model exhibited the optimal performance, with an accuracy of 0.8690, AUROC of 0.9215, F1-score of 0.8452, and MCC of 0.7368. Five-fold cross-validation confirmed its stable performance (mean AUROC = 0.9183), and external validation showed good generalizability (AUROC = 0.7567, 95% CI: 0.6944-0.8191). SHAP analysis revealed that CK-MB, D-dimer, and NT-proBNP were the top three risk factors for SIMI.
conclusionsThe CatBoost model constructed in this study has high accuracy, stability, and generalizability for predicting SIMI risk prediction in sepsis patients. SHAP analysis confirms that CK-MB, D-dimer, and NT-proBNP stand out as the primary predictive factors for sepsis-induced myocardial injury (SIMI) risk. This model could assist clinicians in early identification of high-risk patients and guide targeted interventions, thereby improving patient prognosis. CLINICAL TRIAL NUMBER: Not applicable.
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