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Orthostatic Tremor: A Spectrum of Fast and Slow Frequencies or Distinct Entities?
- Source :
- Tremor and Other Hyperkinetic Movements, Vol 5 (2015)
- Publication Year :
- 2015
- Publisher :
- Ubiquity Press, 2015.
-
Abstract
- Background: Orthostatic tremor (OT) is defined by the presence of a high-frequency (13–18 Hz) tremor of the legs upon standing associated with a feeling of unsteadiness. However, some patients have discharge frequencies of Methods: A retrospective review was performed on all subjects with a diagnosis of OT who were referred to the Mayo Clinic, Scottsdale, AZ, between 1999 and 2013 for confirmation using neurophysiology. Results: Fourteen of 28 subjects (50%) had OT discharges of 13 Hz; p = 0.002). The proportion of subjects who experienced gait unsteadiness (85.7% vs. 66.6% vs. 21.4%; p = 0.016), falls (37.5% vs. 50% vs. 0%; p = 0.010), and had abnormal gait on examination (71.4% vs. 66.0% vs. 14.3%; p = 0.017) was greater in those with low and intermediate frequencies. Discussion: Slow tremor electromyography frequencies (
Details
- Language :
- English
- ISSN :
- 21608288
- Volume :
- 5
- Database :
- Directory of Open Access Journals
- Journal :
- Tremor and Other Hyperkinetic Movements
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.1e7b648ba51740639bf4447cd9359b88
- Document Type :
- article
- Full Text :
- https://doi.org/10.7916/D8S75FHK