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Related Experiment Videos

Cyanide toxicity from sodium nitroprusside: risks and management.

J P Rindone1, E P Sloane

  • 1Department of Veterans Affairs Medical Center, Tucson, AZ 85723.

The Annals of Pharmacotherapy
|April 1, 1992
PubMed
Summary

Nitroprusside therapy can cause cyanide toxicity, though infrequently. Patients with hypoalbuminemia or undergoing cardiopulmonary bypass are at higher risk. Concurrent sodium thiosulfate may prevent this serious adverse effect.

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Area of Science:

  • Pharmacology
  • Toxicology
  • Clinical Medicine

Background:

  • Nitroprusside is a potent vasodilator used in critical care.
  • Cyanide toxicity is a known, albeit rare, complication of nitroprusside administration.
  • Understanding risk factors and management is crucial for patient safety.

Purpose of the Study:

  • To review the risks, clinical manifestations, and treatment strategies for cyanide toxicity associated with nitroprusside therapy.
  • To identify patient populations and clinical scenarios with an elevated risk of developing cyanide toxicity.
  • To summarize preventative measures and therapeutic interventions for nitroprusside-induced cyanide poisoning.

Main Methods:

  • Systematic review of English case reports from MEDLINE (1970-present) detailing nitroprusside-associated cyanide intoxication.

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  • Analysis of existing literature on the incidence, risk factors, and management of cyanide toxicity from nitroprusside.
  • Synthesis of data to provide a comprehensive overview of the condition.

    • Main Results:

    • Numerous cases of cyanide toxicity linked to nitroprusside have been documented.
    • The overall incidence of toxicity is infrequent, but specific patient groups face heightened risk.
    • Identified risk factors include hypoalbuminemia, cardiopulmonary bypass, and high-dose nitroprusside administration.

    Conclusions:

    • Cyanide toxicity from nitroprusside, while infrequent, necessitates prompt recognition and management.
    • Cessation of nitroprusside and administration of the cyanide antidote kit are primary treatments for severe toxicity.
    • Concomitant administration of sodium thiosulfate infusions is a recommended preventative strategy against nitroprusside-induced cyanide toxicity.