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Radial Nerve Block

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Radial Nerve Block, Regional Anesthesia of the Radial Nerve, Radial Nerve Block at Wrist

  • Indications
  1. Anesthesia of Radial Nerve distribution distal to wrist
  • Precautions
  1. Avoid injecting directly into Radial Nerve
  2. Avoid injection into radial artery
  • Preparation
  1. Needle: 27 gauge 1.5 inch
  2. Skin preparation (e.g. Hibiclens or Betadine)
    1. See Regional Anesthesia
  3. Anesthetic
    1. See Regional Anesthesia for anesthetic options
    2. Local Anesthetic 2-5 ml (Ultrasound) or 5-10 ml (landmark)
  1. Position
    1. Wrist and hand resting on the ulnar aspect with the thumb upwards
  2. Ultrasound Probe
    1. Linear Probe transverse to Forearm over the radial aspect, 2 cm proximal to the radial styloid
  3. Injection
    1. Direct the needle towards proximal Forearm
    2. Inject into the perineural space
  • Technique
  • Landmarks
  1. Position
    1. Wrist and hand resting on the ulnar aspect with the thumb upwards
  2. Insertion site
    1. Insert needle 1-2 cm proximal and lateral to radial styloid
    2. Direct needle at 10-20 degree angle distally toward thumb
    3. Inject into subcutaneous tissue
  3. Warning: Distal Paresthesias with needle with injection
    1. Indicates needle is at Radial Nerve
    2. Do not inject here!
    3. Remove needle and reposition