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  • Title: IMPACT Score for Traumatic Brain Injury: Validation of the Prognostic Tool in a Spanish Cohort.
    Author: Egea-Guerrero JJ, Rodríguez-Rodríguez A, Gordillo-Escobar E, Fernández-Delgado E, Martínez-Roldán Á, Roldán-Reina Á, Durán-Martínez P, de Vega-Ríos E, Freire-Aragón MD, Vilches-Arenas Á, Murillo-Cabezas F, Quintana-Díaz M.
    Journal: J Head Trauma Rehabil; 2018; 33(1):46-52. PubMed ID: 28195955.
    Abstract:
    BACKGROUND: The aim of this work was to validate the IMPACT (International Mission for Prognosis and Analysis of Clinical Trials in TBI) model in a Spanish cohort of patients with moderate-severe TBI (traumatic brain injury). SETTING: Two level I neurotrauma centers. PARTICIPANTS: Patients admitted to these hospitals between 2011 and 2014 with a diagnosis of TBI and a Glasgow Coma Scale score of 12 or less. DESIGN: Prospective observational study. MAIN MEASURES: We collected prospectively the clinical variables included in the IMPACT models. Outcome evaluation was prospectively done at 6-month follow-up according to the Glasgow Outcome Scale. RESULTS: A total of 290 patients were included in the study. Forty-seven patients (16.2%) died within 6 months post-TBI, and 74 patients (25.5%) had an unfavorable outcome. The Hosmer-Lemeshow test revealed that there was no difference between observed and predicted outcomes; hence, the 3 models displayed adequate calibration for predicting 6-month mortality or unfavorable outcome. The receiver operating characteristic curve indicated that the 3 models (Core, Extended, and Lab) could accurately discriminate between favorable and unfavorable outcomes, as well as between survival and mortality (P < .001). CONCLUSION: The IMPACT model validates prediction of 6-month outcomes in a Spanish population of moderate-severe TBI. IMPACT Lab model is the one that presents a higher discriminative capacity. These results encourage the implementation of the IMPACT model as a prognostic tool in the management of patients with TBI.
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