Hydrogen Cyanide Poisoning Differential Diagnoses
- Author: Lewis S Nelson, MD, FACEP, FAACT, FACMT; Chief Editor: Robert G Darling, MD, FACEP more...
Diagnostic Considerations
Consider the diagnosis of cyanide poisoning in patients with rapid collapse or seizures accompanied by metabolic acidosis and decreased oxygen consumption. Other agents that may have similar features in toxicity include the following[4] :
- Arsine
- Azides
- Carbon monoxide
- Cicutoxin (Water hemlock)
- Hydrogen sulfide
- Inert gases (simple asphyxiants)
- Isoniazid
- Metformin
- Methemoglobin-inducing agents
- Monomethylhydrazine
- Organophosphorus compounds
- Phosphine
- Strychnine
Differential Diagnoses
- CBRNE - Cyanides, Cyanogen Chloride
- CBRNE - Nerve Agents, Binary: GB2, VX2
- CBRNE - Nerve Agents, G-series: Tabun, Sarin, Soman
- CBRNE - Nerve Agents, V-series: Ve, Vg, Vm, Vx
- Shock, Septic
- Toxicity, Carbon Monoxide
- Toxicity, Ethylene Glycol
- Toxicity, Hydrogen Sulfide
- Toxicity, Isoniazid
- Toxicity, Organophosphate and Carbamate
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