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Mini-dose Bier block intravenous regional anesthesia in the emergency department treatment of pediatric upper-extremity injuries.

The safety and effectiveness of the "mini-dose" Bier block, a technique of i.v. regional anesthesia using low-dose lidocaine (1.5 mg/kg) without routine premedication, was evaluated in the emergency department treatment of pediatric upper-extremity fractures and dislocations. We prospectively studied 69 patients, aged from 2 to 16 years, treated at a pediatric primary care/referral-based emergency department. Good to excellent anesthesia was achieved during closed reduction in 90% of the cases. All patients achieved an acceptable reduction, as demonstrated by follow-up radiographs. None required further treatment of the injury under general anesthesia. No significant complications were noted. We conclude that the mini-dose Bier block provides safe, reliable, and cost-effective anesthesia for the outpatient reduction of pediatric upper-extremity injuries.