What is the prognosis of cyanide toxicity?

Updated: May 30, 2020
  • Author: Inna Leybell, MD; Chief Editor: Michael A Miller, MD  more...
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The prognosis in cyanide toxicity is good for patients who have only minor symptoms that do not necessitate the administration of antidotes. The prognosis is reasonably good for patients with moderate symptoms if rapid supportive intervention and effective antidotal therapy are provided. Suicidal poisonings tend to have severe outcomes because large doses are often involved.

The prognosis in patients with cyanogen poisoning is better in those with low-level exposures with minor symptoms that resolve after they are removed from exposure. The prognosis is fair for patients with seizures or recent-onset apnea if antidotes can be administered rapidly. The prognosis is generally poor in patients who suffer cardiac arrest secondary to cyanide toxicity, even if antidotes are administered promptly.

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