How does local anesthetic toxicity affect the CNS?

Updated: Jan 09, 2019
  • Author: Raffi Kapitanyan, MD; Chief Editor: David Vearrier, MD, MPH  more...
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Answer

CNS toxicity is biphasic. The earlier manifestations are due to CNS excitation, with problems such as seizures. Subsequent manifestations include CNS depression with a cessation of convulsions and the onset of unconsciousness and respiratory depression or arrest.


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