Success of Sensory Evoked Potentials in Patients with Median Compression Syndrome and Additional Neuropathy
Conventional EMG and peripheral nerve conduction studies are common in detection of peripheral nerve lesions. In severe traumatic lesions of peripheral nerves sensory nerve action potentials may not be recordable for many weeks. In some patients additional neuropathies, such as toxic polyneuropathy, influence the interpretation of electrophysiological measurements. Sensory evoked potentials (SEP) may be used to document sensory nerve continuity when sensory nerve action potentials are unrecordable because they are too small or too desynchronized. The ability to monitor SEP in the absence of a sensory nerve action potential implies that incoming peripheral signals have been amplified within the CNS [2, 5].
KeywordsConduction Velocity Median Nerve Sensory Nerve Action Potential Sensory Nerve Conduction Velocity Motor Conduction Velocity
Unable to display preview. Download preview PDF.
- 2.Chiappa KH (1983) Evoked potentials in clinical medicine. Raven Press, New York.Google Scholar
- 3.Cracco J, Castells S, Mark E (1980) Conduction velocity in peripheral nerve and spinal afferent pathways in juvenile diabetics. Neurology 30:370–371.Google Scholar
- 6.Ludin HP (1980) Electromyography in practice. Thieme, Stuttgart New York.Google Scholar
- 7.Ludin HP, Tackmann W (1984) Polyneuropathien. Thieme, Stuttgart New York.Google Scholar
- 8.Nuwer MR (1986) Evoked potential monitoring in the operating room. Raven Press, New York.Google Scholar
- 9.Vaziri D, Pratt H, Saiki JK, Starr A (1981) Evaluation of somatosensory pathways by short latency evoked potentials in patients with end-stage renal disease maintained on hemodialysis. Int Y Artif Organs 4:17–22.Google Scholar