Short Tilte:Usefulness of the Abbreviated Injury Score (AIS) and the Injury Severity Score (ISS) in comparison to the Glasgow Coma Scale (GCS) in predicting outcome after traumatic brain injury
Journal:Trauma-Injury Infection & Critical Care
Year, Volume, Issue, Page(s):07, 62, , 946-950
Background: Assessment of injury severity is important in the management of patients with brain trauma. We aimed to analyze the usefulness of the head abbreviated injury score (AIS), the injury severity score (ISS), and the Glasgow Coma Scale (GCS) as measures of injury severity and predictors of outcome after traumatic brain injury (TBI). Methods: Data were prospectively collected from 410 patients with TBI. AIS, ISS, and GCS were recorded at admission. Subjects’ outcomes after TBI were measured using the Glasgow Outcome Scale (GOS-E) at 12 months postinjury. Uni- and multivariate analyses were performed. Results: Outcome information was obtained from 270 patients (66%). ISS was the best predictor of GOS-E (rs 0.341, p 8). Conclusions: GCS score, AIS, and ISS are weakly correlated with 12-month outcome. However, anatomic measures modestly outperform GCS as predictors of GOS-E. The combination of GCS and AIS/ISS correlate with outcome better than do any of the three measures alone. Results support the addition of anatomic measures such as AIS and ISS in clinical studies of TBI. Additionally, most of the variance in outcome is not accounted for by currently available measures of injury severity.