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Nygren De Boussard, C. et al.

Nygren De Boussard, Fredman, Lundin, Andersson, Edman, Borg,

S100 in mild traumatic brain injury.

PRIMARY OBJECTIVES: To examine the diagnostic value of S100 in mild traumatic brain injury (MTBI). RESEARCH DESIGN: Prospective cohort study. METHODS AND PROCEDURES: S100B, S100A1B and S100BB concentrations were examined in sera from patients with MTBI with an arrival Glasgow Coma Scale score of 15 or 14, patients with orthopaedic injuries and non-injured subjects. MAIN OUTCOME AND RESULTS: Mean values and proportions of subjects above cut-off limits for S100B and S100A1B were significantly higher in each trauma group than in non-injured controls, but only for S100A1B when patients with MTBI were compared with controls with orthopaedic injuries. Using a 97.5 percentile cut-off limit, the sensitivity of S100A1B for MTBI vs orthopaedic injury was 61% (95% confidence interval (CI) 49-73%), specificity 77% (95% CI 62-93%). The area under the ROC curve did not approach 0.9 for any cut off limit. CONCLUSIONS: Diagnostic validity of S100 in acute MTBI was not demonstrated. S100A1B has merits for long-term prognostic studies.[1]

References

S100 in mild traumatic brain injury. Nygren De Boussard, C., Fredman, P., Lundin, A., Andersson, K., Edman, G., Borg, J. Brain injury : [BI]. (2004) [Pubmed]

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