Electrodiagnostic findings in syringomyelia

Electrodiagnostic abnormalities are well known to occur in syringomyelia although the findings are nonspecific. The objective of this work was to describe different types of spontaneous electromyographic (EMG) activity and reflex responses, which may be useful and more specific than conventional fin...

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Autores principales:	Nogués, M.A., Stålberg, E.
Formato:	JOUR
Materias:	Chiari malformation Electromyography (EMG) Long-latency responses (LLR) Spontaneous activity Syringomyelia adult article clinical article electrodiagnosis electromyogram human motor unit potential muscle action potential muscle excitation nerve compression priority journal syringomyelia
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_0148639X_v22_n12_p1653_Nogues
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_0148639X_v22_n12_p1653_Nogues
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spelling	todo:paper_0148639X_v22_n12_p1653_Nogues2023-10-03T15:01:02Z Electrodiagnostic findings in syringomyelia Nogués, M.A. Stålberg, E. Chiari malformation Electromyography (EMG) Long-latency responses (LLR) Spontaneous activity Syringomyelia adult article clinical article electrodiagnosis electromyogram human motor unit potential muscle action potential muscle excitation nerve compression priority journal syringomyelia Electrodiagnostic abnormalities are well known to occur in syringomyelia although the findings are nonspecific. The objective of this work was to describe different types of spontaneous electromyographic (EMG) activity and reflex responses, which may be useful and more specific than conventional findings for the electrodiagnosis of syringomyelia. We studied 43 patients with syringomyelia by four-channel surface EMG and by recording the long- latency responses to distal stimulation of the median and tibial nerves. Continuous motor unit activity (CMUA) was found in 18 patients, synchronous motor unit potentials (SMUP) in 10, respiratory synkinesis (RS) in 5, and myokymic discharges in 4. Long-latency responses (LLR) with latencies ranging from 55 to 150 ms were found in 14 patients. Patients with syringomyelia thus show a wide variation of spontaneous EMG activity. An increase in excitability of spinal motor neurons is probably the basic underlying mechanism. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0148639X_v22_n12_p1653_Nogues
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Chiari malformation Electromyography (EMG) Long-latency responses (LLR) Spontaneous activity Syringomyelia adult article clinical article electrodiagnosis electromyogram human motor unit potential muscle action potential muscle excitation nerve compression priority journal syringomyelia
spellingShingle	Chiari malformation Electromyography (EMG) Long-latency responses (LLR) Spontaneous activity Syringomyelia adult article clinical article electrodiagnosis electromyogram human motor unit potential muscle action potential muscle excitation nerve compression priority journal syringomyelia Nogués, M.A. Stålberg, E. Electrodiagnostic findings in syringomyelia
topic_facet	Chiari malformation Electromyography (EMG) Long-latency responses (LLR) Spontaneous activity Syringomyelia adult article clinical article electrodiagnosis electromyogram human motor unit potential muscle action potential muscle excitation nerve compression priority journal syringomyelia
description	Electrodiagnostic abnormalities are well known to occur in syringomyelia although the findings are nonspecific. The objective of this work was to describe different types of spontaneous electromyographic (EMG) activity and reflex responses, which may be useful and more specific than conventional findings for the electrodiagnosis of syringomyelia. We studied 43 patients with syringomyelia by four-channel surface EMG and by recording the long- latency responses to distal stimulation of the median and tibial nerves. Continuous motor unit activity (CMUA) was found in 18 patients, synchronous motor unit potentials (SMUP) in 10, respiratory synkinesis (RS) in 5, and myokymic discharges in 4. Long-latency responses (LLR) with latencies ranging from 55 to 150 ms were found in 14 patients. Patients with syringomyelia thus show a wide variation of spontaneous EMG activity. An increase in excitability of spinal motor neurons is probably the basic underlying mechanism.
format	JOUR
author	Nogués, M.A. Stålberg, E.
author_facet	Nogués, M.A. Stålberg, E.
author_sort	Nogués, M.A.
title	Electrodiagnostic findings in syringomyelia
title_short	Electrodiagnostic findings in syringomyelia
title_full	Electrodiagnostic findings in syringomyelia
title_fullStr	Electrodiagnostic findings in syringomyelia
title_full_unstemmed	Electrodiagnostic findings in syringomyelia
title_sort	electrodiagnostic findings in syringomyelia
url	http://hdl.handle.net/20.500.12110/paper_0148639X_v22_n12_p1653_Nogues
work_keys_str_mv	AT noguesma electrodiagnosticfindingsinsyringomyelia AT stalberge electrodiagnosticfindingsinsyringomyelia
_version_	1807322879125094400

Electrodiagnostic findings in syringomyelia

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