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Autonomic involvement in extrapyramidal and cerebellar disorders
P Sandroni1, J E Ahlskog, R D Fealey
1Department of Neurology, Mayo Foundation, Rochester, MN 55905.
Summary
Autonomic dysfunction varies across neurodegenerative disorders. Multiple system atrophy shows severe autonomic failure, aiding in diagnosis and monitoring disease progression.
Area of Science:
- Neurology
- Autonomic Neuroscience
Background:
- Autonomic dysfunction is a common feature in various neurodegenerative disorders.
- Distinguishing between these disorders can be challenging based on clinical presentation alone.
Purpose of the Study:
- To investigate the spectrum of autonomic involvement in patients with extrapyramidal and cerebellar disorders.
- To assess the utility of autonomic function tests in differentiating these conditions and monitoring disease course.
Main Methods:
- Retrospective review of clinical and autonomic data from patients studied between 1983-1989.
- Categorization of patients into specific neurological disorder groups.
- Analysis of autonomic function test results including blood pressure, sweating, and heart rate responses.
Main Results:
- Severe autonomic failure was prevalent in multiple system atrophy (97%) and nonspecific sporadic multisystem degeneration (53%).
- Parkinson's disease exhibited mild or absent autonomic involvement, while parkinsonism-plus and cerebellar degeneration showed moderate involvement.
- Autonomic test parameters correlated with the severity of autonomic failure. Levodopa response was associated with absence of cerebellar signs and cognitive deficits.
Conclusions:
- Autonomic studies are valuable tools for differentiating between various neurodegenerative disorders with extrapyramidal and cerebellar features.
- Autonomic dysfunction presents a spectrum across these conditions, aiding in diagnosis and patient management.
- Autonomic testing can help monitor the progression of these neurological diseases.