RESUMO
PURPOSE: Biochemical markers can help predict neurological outcome in post-resuscitation patients. This prospective study evaluated the prognostic value of serum S100B protein and neuron-specific enolase (NSE) time courses in predicting unfavorable neurological outcomes. METHODS: We serially measured serum S100B protein and NSE levels 12 times during the 96 h after the return of spontaneous circulation (ROSC) in 40 patients. Neurological outcome was assessed at 6 months after cardiac arrest. Patients were divided into good (CPC 1 to 2) and poor (CPC 3 to 5) neurological outcome groups and assessed for cerebral performance category scores. We compared the two groups at each serum value and calculated cut-off values. RESULTS: Serum S100B protein levels over the study period, except at 4 hours, and NSE levels from 14 hours after ROSC were significantly higher in the poor neurological outcome group (n=32) than the good neurological outcome group (n=8). The most predictive serum S100B protein and NSE times were at 14 hours (cut off value=0.16 microgram/L, sensitivity 81.8%, specificity 100%, AUC=0.938) and 54 hours (cut off value=19.21 microgram/L, sensitivity 86.4%, specificity 100%, AUC=0.932). CONCLUSION: Serum S100B protein and NSE levels are early and useful markers for assessing neurological outcome after successful resuscitation from cardiac arrest.
