Local anesthetic systemic toxicity

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Background

  • Complication of lidocaine injection (accidental into systemic circulation)
    • 0.2% of nerve blocks
  • Occurs within minutes of injection
    • 75% occuring within 5 minutes

Diagnosis

  • CNS symptoms
    • Agitation
    • Auditory changes
    • Metallic taste
    • Seizures or drowsiness
    • Coma
    • Respiratory arrest
  • Cardiovascular