Objective The role of naloxone in diffuse axonal injury(DAI)remains in doubt.This metaanalysis is to evaluate the efficacy and safety of naloxone.Methods A systematic electronic literature search was conducted to identify from Databases randomized controlled trials(RCTs)comparing the use of naloxone with control group in patients with DAI.Data extraction and quality evaluation of studies were performed by investigators independently.A meta-analysis was performed by STATA12.0.Results Totally 12 studies invol...