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Multiple cranial nerve deficits after ethylene glycol poisoning
L Spillane1, J R Roberts, A E Meyer
1Department of Emergency Medicine (Division of Toxicology), Mercy Catholic Medical Center, Philadelphia, Pennsylvania.
Annals of Emergency Medicine
|February 1, 1991
Summary
Ethylene glycol ingestion can cause cranial nerve palsies, including facial nerve (VII) and glossopharyngeal/vagal nerves (IX/X). Neuropathy may persist despite treatment, suggesting complex mechanisms like oxalate deposition.
Area of Science:
- Toxicology
- Neurology
Background:
- Ethylene glycol poisoning is a serious condition that can lead to severe health complications.
- Cranial nerve palsies are a rare but potential neurological sequela of ethylene glycol toxicity.
Observation:
- Two patients presented with cranial nerve deficits following ethylene glycol ingestion.
- One patient developed palsies of cranial nerves VII, IX, and X, while the other experienced bilateral cranial nerve VII dysfunction.
Findings:
- Neurological deficits, particularly bilateral cranial nerve VII palsies, were observed despite hemodialysis treatment.
- Dysphagia resolved in one patient, but persistent facial nerve dysfunction was noted at six months.
- Functional recovery was only moderate in the second patient after three months.
Implications:
- The exact etiology of ethylene glycol-induced cranial nerve palsies remains unclear.
- Potential mechanisms include oxalate crystal deposition or ethylene glycol-induced pyridoxine dysfunction.
- These cases highlight the need for further investigation into the neurological complications of ethylene glycol poisoning.