Acute cardiac care & resuscitation

Predicting recurrent cardiac arrest within one year after surviving in-hospital cardiac arrest using a machine learning model

ResuscitationPublished Machine learning prediction model

Authors' conclusion

In this dataset, an XGBoost model could predict recurrent cardiac arrest or death within one year after IHCA with a modest performance and good accuracy. If these results can be validated, this model could potentially be used clinically to assess the risk of another cardiac arrest in survivors of IHCA.

Study context

Population
Patients (>18 year) discharged alive after in-hospital cardiac arrest (IHCA) in the Swedish registry for cardiopulmonary resuscitation (SRCR) from 2010 to 2021
Participants
7,302 included patientsEvents: 22%
Predictors
Data related to the index IHCA, comorbidities, socioeconomic data and prescription medication obtained from national Swedish registries; XGBoost model
Predicted outcome
Recurrent cardiac arrest or death within one year after IHCA
Methodological detailsregistry-based, Extreme gradient boosting (XGBoost)
  • Registry-based
  • Extreme gradient boosting (XGBoost)

Model performance

As reported in the abstract

ROC-AUC
Best performing model with 1241 variables
0.72(95% CI 0.70-0.75)

Further findings

Features of greatest importance were highest serum creatinine measured before IHCA, age and unknown civil status
Comorbidity and cardiac arrest circumstances were important classes of features

Original publication

Predicting recurrent cardiac arrest within one year after surviving in-hospital cardiac arrest using a machine learning model. Resuscitation. Published 6 February 2026. doi:10.1016/j.resuscitation.2026.111006

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