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Coma and death in unrecognized Wernicke's encephalopathy. An autopsy study
M A Lana-Peixoto1, E C Dos Santos, J E Pittella
1Department of Neurology, Federal University of Minas Gerais, Brasil.
Arquivos De Neuro-Psiquiatria
|September 1, 1992
Summary
Wernicke's encephalopathy is often missed, with coma being its only sign in some cases. Early thiamine treatment is crucial for recovery, even if the cause of coma is unknown.
Area of Science:
- Neurology
- Pathology
Background:
- Wernicke's encephalopathy (WE) is a serious neurological condition often linked to thiamine deficiency.
- WE is frequently underdiagnosed, potentially leading to severe outcomes.
Purpose of the Study:
- To investigate the prevalence and neuropathological findings of Wernicke's encephalopathy in patients presenting with coma.
- To highlight the diagnostic challenges and importance of prompt treatment in suspected cases.
Main Methods:
- Retrospective analysis of 36 autopsied cases.
- Review of clinical histories and neuropathological examinations, focusing on brainstem and diencephalic structures.
Main Results:
- Eleven of 36 autopsied patients (30.5%) had WE, with coma as a presenting sign in all.
- None of the patients received a diagnosis of WE during their lifetime.
- Neuropathological findings included mammillary body changes (8/11), petechial hemorrhages, glial proliferation, endothelial hypertrophy, and neuronal necrosis.
Conclusions:
- Coma can be the sole or masking manifestation of Wernicke's encephalopathy, leading to underdiagnosis.
- Prompt administration of parenteral thiamine is recommended for any patient with unexplained coma due to its potential for reversal.