NutriSighT: Interpretable Transformer Model for Dynamic Prediction of Hypocaloric Enteral Nutrition in Mechanically Ventilated Patients
Jangda, M.; Patel, J.; Gill, J.; McCarthy, P.; Desman, J.; Gupta, R.; Patel, D.; Kavi, N.; Bakare, S.; Klang, E.; Freeman, R.; Manasia, A.; Oropello, J.; Chan, L.; Suarez-Farinas, M.; Charney, A. W.; Kohli-Seth, R.; Nadkarni, G. N.; Sakhuja, A.
Show abstract
Achieving adequate enteral nutrition among mechanically ventilated patients is challenging, yet critical. We developed NutriSighT, a transformer model using learnable positional coding to predict which patients would achieve hypocaloric nutrition between days 3-7 of mechanical ventilation. Using retrospective data from two large ICU databases (3,284 patients from AmsterdamUMCdb - development set, and 6,456 from MIMIC-IV - external validation set), we included adult patients intubated for at least 72 hours. NutriSighT achieved AUROC of 0.81 (95% CI: 0.81 - 0.82) and an AUPRC of 0.70 (95% CI: 0.70 - 0.72) on internal test set. External validation with MIMIC-IV data yielded a AUROC of 0.76 (95% CI: 0.75 - 0.76) and an AUPRC of (95% CI: 0.69 - 0.70). At a threshold of 0.5, the model achieved a 75.16% sensitivity, 60.57% specificity, 58.30% positive predictive value, and 76.88% negative predictive value. This approach may help clinicians personalize nutritional therapy among critically ill patients, improving patient outcomes.
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