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Nerve conduction studies in rheumatoid arthritis
S I Bekkelund1, T Torbergsen, R Omdal
1Department of Neurology, University Hospital, Tromsø, Norway.
Scandinavian Journal of Rheumatology
|January 1, 1996
Summary
Nerve conduction studies in rheumatoid arthritis (RA) patients revealed differences compared to healthy individuals. While some nerve function parameters were impaired, overall motor and sensory conduction appeared better in RA patients.
Area of Science:
- Neurology
- Rheumatology
Background:
- Rheumatoid arthritis (RA) is a systemic autoimmune disease.
- RA can affect various organs, including peripheral nerves.
Purpose of the Study:
- To investigate potential differences in nerve conduction parameters between RA patients and healthy controls.
- To assess nerve function in individuals with RA using nerve conduction studies (NCS).
Main Methods:
- A controlled study comparing 52 RA patients and 77 healthy controls.
- Nerve conduction studies (NCS) were performed, measuring motor and sensory amplitudes, nerve conduction velocities, and distal latencies.
Main Results:
- Patients with RA showed significantly lower mean summed amplitudes of compound muscle action potentials compared to controls (30.3 mV vs. 35.9 mV, p = 0.0001).
- Conversely, RA patients exhibited significantly lower mean motor distal latency (14.3 msec vs. 15.9 msec, p = 0.0001).
- These findings suggest complex alterations in nerve function in RA.
Conclusions:
- Nerve conduction studies indicate impaired nerve function in some aspects for RA patients.
- However, motor and sensory distal conduction appeared to be enhanced in the RA patient group.
- Further research is needed to understand the implications of these divergent findings.