Ethylene glycol poisoning | |
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Other names | Ethylene glycol toxicity, ethylene glycol overdose |
Ethylene glycol | |
Specialty | Emergency medicine |
Symptoms | Early: intoxication, vomiting, abdominal pain[1] Later: decreased level of consciousness, headache, seizures[1] |
Complications | Kidney failure, brain damage[1] |
Causes | Drinking ethylene glycol[1] |
Diagnostic method | Calcium oxalate crystals in the urine, acidosis or increased osmol gap in the blood[1] |
Treatment | Antidote, hemodialysis[2] |
Medication | Fomepizole, ethanol[2] |
Frequency | > 5,000 cases per year (US)[3] |
Ethylene glycol poisoning is poisoning caused by drinking ethylene glycol.[1] Early symptoms include intoxication, vomiting and abdominal pain.[1] Later symptoms may include a decreased level of consciousness, headache, and seizures.[1] Long term outcomes may include kidney failure and brain damage.[1] Toxicity and death may occur after drinking even in a small amount[1] as ethylene glycol is more toxic than other diols.
Ethylene glycol is a colorless, odorless, sweet liquid, commonly found in antifreeze.[1] It may be drunk accidentally or intentionally in a suicide attempt.[2] When broken down by the body it results in glycolic acid and oxalic acid which cause most of the toxicity.[1][4] The diagnosis may be suspected when calcium oxalate crystals are seen in the urine or when acidosis or an increased osmol gap is present in the blood.[1] Diagnosis may be confirmed by measuring ethylene glycol levels in the blood; however, many hospitals do not have the ability to perform this test.[1]
Early treatment increases the chance of a good outcome.[2] Treatment consists of stabilizing the person, followed by the use of an antidote.[2] The preferred antidote is fomepizole with ethanol used if this is not available.[2] Hemodialysis may also be used in those where there is organ damage or a high degree of acidosis.[2] Other treatments may include sodium bicarbonate, thiamine, and magnesium[clarification needed].[2]
More than 5,000 cases of poisoning occur in the United States each year.[3] Those affected are often adults and male.[4] Deaths from ethylene glycol have been reported as early as 1930.[5] An outbreak of deaths in 1937 due to a medication mixed in a similar compound, diethylene glycol, resulted in the Food, Drug, and Cosmetic Act of 1938 in the United States, which mandated evidence of safety before new medications could be sold.[5] Antifreeze products sometimes have a substance to make them bitter added to discourage drinking by children or animals but this has not been found to be effective.[2]