In vivo assessment of conduction velocity and refractory period of denervated muscle fibers.
Artif Organs
; 29(6): 436-9, 2005 Jun.
Article
en En
| MEDLINE
| ID: mdl-15926977
ABSTRACT
Stimulation needle electromyography was used to study the muscle fiber conduction velocity and refractory period in 4 patients with long-term denervation of the lower limb muscles due to lesion of the conus cauda or cauda equina (2 untrained and 2 trained by functional electrical stimulation). In untrained patients, the results demonstrated that propagation velocity is reduced and refractory period of the muscle fiber is increased with time of denervation. The patients performing electrical stimulation training showed higher conduction velocities and reduced refractory period despite longer lasting denervation. This suggests that electrical stimulation training is effective to improve the electrical properties of the muscle fiber. Since the obtained data show a good correlation to other clinical tests and biopsy investigations, this method could serve as an additional measurement technique to specify the status of the denervated muscle. Further animal experiments and clinical studies are necessary to proof the results in comparison to more invasive established techniques.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Traumatismos de la Médula Espinal
/
Fibras Musculares Esqueléticas
/
Desnervación Muscular
/
Conducción Nerviosa
Límite:
Humans
Idioma:
En
Revista:
Artif Organs
Año:
2005
Tipo del documento:
Article
País de afiliación:
Austria