Median nerve block (ultrasound-guided)

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Median nerve block is a technique used for providing anesthesia to the median nerve territory, it may be performed at the level of the arm, elbow, forearm or the wrist.

Indications

  • fracture reductions
  • surgical repair of fractures
  • incision and drainage of cysts and abscesses
  • post-operative analgesia
  • burns involving tissue in the median nerve territory

Contraindications

  • cellulitis or abscess in the site of injection
  • known allergy to local anesthetics
  • compartment syndrome

Equipment

  • high-frequency linear ultrasound probe
  • disinfectant agent
  • sterile ultrasound gel
  • sterile probe cover
  • local anesthetic 
  • skin or block needle

Complications

Even if it is a simple and safe block, complications may occur such as:

  • infection of the puncture site
  • intravascular injection
  • allergic reaction to anesthetic products
  • direct nerve damage with neuropraxia or neurolysis
  • intramuscular hematoma
  • unsuccessful block
  • local anesthetic systemic toxicity (LAST)