Hyperosmolar therapy response in traumatic brain injury: Explainable artificial intelligence based long-term time series forecasting approach

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Min-Kyung Jung, Tae Hoon Roh, Hakseung Kim, Eun Jin Ha, Dukyong Yoon, Chan Min Park, Se-Hyuk Kim, Namkyu You, Dong-Joo Kim (Korea University)

Expert Systems with Applications (2024)

Abstract:

  • Develops an explainable neural network model to forecast physiological responses after osmotic therapy in traumatic brain injury (TBI) patients.
  • Data from arterial blood pressure, intracranial pressure – 107 TBI patients treated with mannitol or hypertonic saline.
  • Six prediction models were built using the LTSF-NLinear time series forecasting approach for 1-hour predictions.
  • The model’s predictions were evaluated for both physiological signal and event prediction.

Findings:

  • The forecasting models achieved high performance: R² > 0.8 for physiological signals and accuracy > 0.9 for predicting adverse events.
  • Including both mannitol and hypertonic saline treatments allowed the model to generalize across two types of osmotic therapy.
  • Provided insight into which recent physiological signal values most influence model predictions.
  • Local explanations → how individual patient states affected predicted responses.

Conclusion:

  • Neural network forecasting – predict short-term responses to osmotic therapy in TBI clinical settings.
  • Model – Quantitative guidance for clinicians to support decisions on therapy maintenance and transition.
  • High predictive accuracy and interpretability make this approach promising for improving prognosis and clinical workflow in neurological intensive care.
  • Both global and local explanations → physiological response patterns post-treatment.

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