Various aspects of F-wave values in a healthy population

Show simple item record Nobrega, JAM Pinheiro, D. S. Manzano, G. M. Kimura, J. 2016-01-24T12:37:25Z 2016-01-24T12:37:25Z 2004-10-01
dc.identifier.citation Clinical Neurophysiology. Clare: Elsevier Sci Ireland Ltd, v. 115, n. 10, p. 2336-2342, 2004.
dc.identifier.issn 1388-2457
dc.description.abstract Objective: To characterize various aspects of F-wave in a healthy population and establish normative data for future clinical use.Methods: A total of 100 healthy volunteers underwent sensory and motor nerve conduction studies of the ulnar and tibial nerves, including F waves elicited by 32 stimuli.Results: the F-wave measurements (mean +/- SD for ulnar vs tibial nerve) consisted of persistence (83 +/- 19 vs 97 +/- 5%), minimum, mean and maximum latencies (26.5 +/- 2.1, 28.1 +/- 2.2, and 30.4 +/- 2.3 vs 47.0 +/- 4.1, 49.6 +/- 4.4, and 52.5 +/- 4.4 ms), minimum, mean and maximum F-wave conduction velocities (FWCV) (55.0 +/- 2.7, 60.0 +/- 2.3, and 64.0 +/- 3.0 vs 49.0 +/- 2.9, 52.2 +/- 3.1, and 55.5 +/- 3.4 m/s), chronodispersion (3.9 +/- 0.9 vs 5.5 +/- 1.4 ms), mean amplitude (347 +/- 152 vs 384 +/- 148 muV) and mean duration (8.6 +/- 2.9 vs 13.0 +/- 4.5 ms). Additional measures, registered by electronic averaging, included latency (27.4 +/- 2.3 vs 48.6 +/- 4.7 ms), duration (9.6 +/- 2.2 vs 16.4 +/- 4.2 ms), and amplitude (299 +/- 156 vs 208 +/- 116 muV).Conclusions: the use of a height nomogram serves well as an acceptable means to adjust F latencies for the limb length. in addition to the commonly used minimal latency, maximal FWCV, and persistence, clinically relevant measures with a narrow variability includes mean and maximal latencies, chronodispersion, and mean duration. in particular, mean latency obtained with 10 stimuli gave accurate results either for group or individual analysis.Significance: the data help establish an adequate manner of recording F-wave latencies in clinical evaluation. (C) 2004 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All fights reserved. en
dc.format.extent 2336-2342
dc.language.iso eng
dc.publisher Elsevier B.V.
dc.relation.ispartof Clinical Neurophysiology
dc.rights Acesso restrito
dc.subject ulnar nerve en
dc.subject tibial nerve en
dc.subject F waves en
dc.subject nerve conduction studies en
dc.subject late responses en
dc.subject F-wave latency en
dc.subject F-wave velocity en
dc.title Various aspects of F-wave values in a healthy population en
dc.type Artigo
dc.contributor.institution Universidade Federal de São Paulo (UNIFESP)
dc.contributor.institution Kyoto Univ
dc.contributor.institution Univ Iowa
dc.description.affiliation Universidade Federal de São Paulo, Clin Neurophysiol Lab, São Paulo, SP, Brazil
dc.description.affiliation Kyoto Univ, Kyoto, Japan
dc.description.affiliation Univ Iowa, Iowa City, IA USA
dc.description.affiliationUnifesp Universidade Federal de São Paulo, Clin Neurophysiol Lab, São Paulo, SP, Brazil
dc.identifier.doi 10.1016/j.clinph.2004.05.011
dc.description.source Web of Science
dc.identifier.wos WOS:000224045000016


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