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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. Images
    1. radialNerveBlockWristUltrasound.jpg
  2. Position
    1. Wrist and hand resting on the ulnar aspect with the thumb upwards
  3. Ultrasound Probe
    1. Linear Probe transverse to Forearm over the radial aspect, 2 cm proximal to the radial styloid
  4. Injection
    1. Direct the needle towards proximal Forearm
    2. Inject into the perineural space
  • Technique
  • Landmarks
  1. Images
    1. radialNerveBlockWristLandmark.jpg
  2. Position
    1. Wrist and hand resting on the ulnar aspect with the thumb upwards
  3. 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
  4. Warning: Distal Paresthesias with needle with injection
    1. Indicates needle is at Radial Nerve
    2. Do not inject here!
    3. Remove needle and reposition