Intravenous Regional Anesthesia
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The intravenous injection of local anesthetic into an exsanguinated limb provides anesthesia by diffusion of the drug to peripheral nerves supplied by small vessels. Intravenous regional anesthesia is most commonly used for procedures on the hand, wrist, and digits; however, it may also be effective for minor surgery on the foot and ankle. The following aspects of the procedure are reviewed: clinical applications, relevant anatomy, patient position, technique (including neural localization techniques, needle insertion site, and needle redirection cues), and side effects and complications.
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