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Pathophysiology inferred from electrodiagnostic nerve tests and classification of polyneuropathies. Suggested guidelines.
Clin Neurophysiol. 2005 Jul; 116(7):1571-80.CN

Abstract

OBJECTIVE

To present criteria for pathophysiological interpretation of motor and sensory nerve conduction studies and for pathophysiological classification of polyneuropathies suggested by a group of European neurophysiologists.

METHODS

Since 1992 seven neurophysiologists from six European countries have collected random samples of their electrodiagnostic examinations for peer review medical audit in the ESTEEM (European Standardized Telematic tool to Evaluate Electrodiagnostic Methods) project. Based on existing criteria in the literature, the experience with a patient material of 572 peer reviewed electrodiagnostic examinations, and productive discussions between the physicians at workshops, the collaboration has produced a set of criteria now routinely used at the centres involved in the project.

RESULTS

The first part of the paper considers pathophysiology of individual nerve segments. For interpretation of motor and sensory nerve conduction studies, figures showing change in amplitude versus change in conduction velocity/distal latency and change in F-wave frequency versus change in F-wave latency are presented. The suggested boundaries delimit areas corresponding to normal, axonal, demyelinated, or neuropathic nerve segments. Criteria for motor conduction block in upper and lower extremities are schematically depicted using the parameters CMAP amplitude and CMAP duration. The second part of the paper suggests criteria for classification of polyneuropathies into axonal, demyelinating, or mixed using the above-mentioned criteria.

CONCLUSIONS

The suggested criteria are developed during many years of collaboration of different centres and may be useful for standardization in clinical neurophysiology.

SIGNIFICANCE

Consistent interpretation of nerve conduction studies is an important step in optimising diagnosis and treatment of nerve disorders.

Authors+Show Affiliations

Department of Neurophysiology, Aarhus University Hospital, Aarhus, Denmark.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Guideline
Journal Article
Multicenter Study
Practice Guideline

Language

eng

PubMed ID

15907395

Citation

Tankisi, Hatice, et al. "Pathophysiology Inferred From Electrodiagnostic Nerve Tests and Classification of Polyneuropathies. Suggested Guidelines." Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology, vol. 116, no. 7, 2005, pp. 1571-80.
Tankisi H, Pugdahl K, Fuglsang-Frederiksen A, et al. Pathophysiology inferred from electrodiagnostic nerve tests and classification of polyneuropathies. Suggested guidelines. Clin Neurophysiol. 2005;116(7):1571-80.
Tankisi, H., Pugdahl, K., Fuglsang-Frederiksen, A., Johnsen, B., de Carvalho, M., Fawcett, P. R., Labarre-Vila, A., Liguori, R., Nix, W. A., & Schofield, I. S. (2005). Pathophysiology inferred from electrodiagnostic nerve tests and classification of polyneuropathies. Suggested guidelines. Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology, 116(7), 1571-80.
Tankisi H, et al. Pathophysiology Inferred From Electrodiagnostic Nerve Tests and Classification of Polyneuropathies. Suggested Guidelines. Clin Neurophysiol. 2005;116(7):1571-80. PubMed PMID: 15907395.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Pathophysiology inferred from electrodiagnostic nerve tests and classification of polyneuropathies. Suggested guidelines. AU - Tankisi,Hatice, AU - Pugdahl,Kirsten, AU - Fuglsang-Frederiksen,Anders, AU - Johnsen,Birger, AU - de Carvalho,Mamede, AU - Fawcett,Peter R W, AU - Labarre-Vila,Annick, AU - Liguori,Rocco, AU - Nix,Wilfred A, AU - Schofield,Ian S, AU - ,, PY - 2004/11/24/received PY - 2005/03/31/revised PY - 2005/04/06/accepted PY - 2005/5/24/pubmed PY - 2005/8/12/medline PY - 2005/5/24/entrez SP - 1571 EP - 80 JF - Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology JO - Clin Neurophysiol VL - 116 IS - 7 N2 - OBJECTIVE: To present criteria for pathophysiological interpretation of motor and sensory nerve conduction studies and for pathophysiological classification of polyneuropathies suggested by a group of European neurophysiologists. METHODS: Since 1992 seven neurophysiologists from six European countries have collected random samples of their electrodiagnostic examinations for peer review medical audit in the ESTEEM (European Standardized Telematic tool to Evaluate Electrodiagnostic Methods) project. Based on existing criteria in the literature, the experience with a patient material of 572 peer reviewed electrodiagnostic examinations, and productive discussions between the physicians at workshops, the collaboration has produced a set of criteria now routinely used at the centres involved in the project. RESULTS: The first part of the paper considers pathophysiology of individual nerve segments. For interpretation of motor and sensory nerve conduction studies, figures showing change in amplitude versus change in conduction velocity/distal latency and change in F-wave frequency versus change in F-wave latency are presented. The suggested boundaries delimit areas corresponding to normal, axonal, demyelinated, or neuropathic nerve segments. Criteria for motor conduction block in upper and lower extremities are schematically depicted using the parameters CMAP amplitude and CMAP duration. The second part of the paper suggests criteria for classification of polyneuropathies into axonal, demyelinating, or mixed using the above-mentioned criteria. CONCLUSIONS: The suggested criteria are developed during many years of collaboration of different centres and may be useful for standardization in clinical neurophysiology. SIGNIFICANCE: Consistent interpretation of nerve conduction studies is an important step in optimising diagnosis and treatment of nerve disorders. SN - 1388-2457 UR - https://www.unboundmedicine.com/medline/citation/15907395/Pathophysiology_inferred_from_electrodiagnostic_nerve_tests_and_classification_of_polyneuropathies__Suggested_guidelines_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1388-2457(05)00135-5 DB - PRIME DP - Unbound Medicine ER -