Reliability, reference values and predictor variables of the ulnar sensory nerve in disease free adults
| Autor: | R.S. Wainner, J.M. Moore, S. C. Allison, Thomas M. Ruediger |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Adult
Male medicine.medical_specialty Elbow Neural Conduction Action Potentials Sensory system Audiology Young Adult Predictive Value of Tests Reference Values Physiology (medical) Linear regression medicine Humans Ulnar nerve Reliability (statistics) Ulnar Nerve Electromyography Snap Reproducibility of Results General Medicine Anthropometry Middle Aged medicine.anatomical_structure Neurology Physical therapy Female Neurology (clinical) Psychology Ulnar Neuropathies Sensory nerve |
| Zdroj: | Neurophysiologie clinique = Clinical neurophysiology. 44(3) |
| ISSN: | 1769-7131 |
| Popis: | Summary Objective The purposes of this descriptive and exploratory study were to examine electrophysiological measures of ulnar sensory nerve function in disease free adults to determine reliability, determine reference values computed with appropriate statistical methods, and examine predictive ability of anthropometric variables. Methods Antidromic sensory nerve conduction studies of the ulnar nerve using surface electrodes were performed on 100 volunteers. Reference values were computed from optimally transformed data. Reliability was computed from 30 subjects. Multiple linear regression models were constructed from four predictor variables. Results Reliability was greater than 0.85 for all paired measures. Responses were elicited in all subjects; reference values for sensory nerve action potential (SNAP) amplitude from above elbow stimulation are 3.3 μV and decrement across-elbow less than 46%. No single predictor variable accounted for more than 15% of the variance in the response. Conclusion Electrophysiologic measures of the ulnar sensory nerve are reliable. Absent SNAP responses are inconsistent with disease free individuals. Reference values recommended in this report are based on appropriate transformations of non-normally distributed data. No strong statistical model of prediction could be derived from the limited set of predictor variables. Significance Reliability analyses combined with relatively low level of measurement error suggest that ulnar sensory reference values may be used with confidence. |
| Databáze: | OpenAIRE |
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