What is the mortality rate of cyanide toxicity?

Updated: May 30, 2020
  • Author: Inna Leybell, MD; Chief Editor: Michael A Miller, MD  more...
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Answer

According to the American Association of Poison Control Centers Toxic Exposure Surveillance System, 2 of the 272 cyanide exposure cases in 2018 were fatal. [20] Cyanide induces fatality in seconds to minutes following inhalation or intravenous injection, in minutes following ingestion of soluble salts, or minutes (hydrogen cyanide) to several hours (cyanogens) after skin absorption.

Individuals who survive cyanide poisoning are at risk for central nervous system dysfunction, such as anoxic encephalopathy. Acute and delayed neurologic manifestations (Parkinson-like syndrome, other movement disorders, neuropsychiatric sequelae) have been reported.


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