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Intraoperative on-nerve nerve conduction study and conversion factor in the sural nerve.
Muscle Nerve. 2010 Sep; 42(3):373-8.MN

Abstract

To determine the conversion factor (CF) of the sural nerve the correlation between the maximum nerve conduction velocity (NCV) and the diameter of the largest fibers was studied in 30 patients suspected of having neuropathy. Sensory nerve action potentials were obtained by on-nerve needle nerve conduction study using needle electrodes placed on the exposed sural nerve during biopsy. The CF was 4.3 (n = 2) in normal sural nerves and close to the normal value (3.85, n = 4) in axonal neuropathy. The CF in demyelinating neuropathy was smaller than the normal value (2.77, n = 24), indicating disproportionately slower conduction than expected from the diameter of nerve fibers. The CF was helpful in differentiating between demyelinating and axonal neuropathies. We propose that a 36% decrease from the mean value of NCV is a reasonable criterion for demyelination of the nerve.

Authors+Show Affiliations

Department of Neurology, University of Alabama at Birmingham, Birmingham, Alabama, USA. shinjoh@uab.eduNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

20589887

Citation

Oh, Shin J., et al. "Intraoperative On-nerve Nerve Conduction Study and Conversion Factor in the Sural Nerve." Muscle & Nerve, vol. 42, no. 3, 2010, pp. 373-8.
Oh SJ, Hemmi S, Kurokawa K, et al. Intraoperative on-nerve nerve conduction study and conversion factor in the sural nerve. Muscle Nerve. 2010;42(3):373-8.
Oh, S. J., Hemmi, S., Kurokawa, K., & Hatanaka, Y. (2010). Intraoperative on-nerve nerve conduction study and conversion factor in the sural nerve. Muscle & Nerve, 42(3), 373-8. https://doi.org/10.1002/mus.21696
Oh SJ, et al. Intraoperative On-nerve Nerve Conduction Study and Conversion Factor in the Sural Nerve. Muscle Nerve. 2010;42(3):373-8. PubMed PMID: 20589887.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Intraoperative on-nerve nerve conduction study and conversion factor in the sural nerve. AU - Oh,Shin J, AU - Hemmi,Shoji, AU - Kurokawa,Katsumi, AU - Hatanaka,Yuki, PY - 2010/7/1/entrez PY - 2010/7/1/pubmed PY - 2010/9/18/medline SP - 373 EP - 8 JF - Muscle & nerve JO - Muscle Nerve VL - 42 IS - 3 N2 - To determine the conversion factor (CF) of the sural nerve the correlation between the maximum nerve conduction velocity (NCV) and the diameter of the largest fibers was studied in 30 patients suspected of having neuropathy. Sensory nerve action potentials were obtained by on-nerve needle nerve conduction study using needle electrodes placed on the exposed sural nerve during biopsy. The CF was 4.3 (n = 2) in normal sural nerves and close to the normal value (3.85, n = 4) in axonal neuropathy. The CF in demyelinating neuropathy was smaller than the normal value (2.77, n = 24), indicating disproportionately slower conduction than expected from the diameter of nerve fibers. The CF was helpful in differentiating between demyelinating and axonal neuropathies. We propose that a 36% decrease from the mean value of NCV is a reasonable criterion for demyelination of the nerve. SN - 1097-4598 UR - https://www.unboundmedicine.com/medline/citation/20589887/Intraoperative_on_nerve_nerve_conduction_study_and_conversion_factor_in_the_sural_nerve_ L2 - https://doi.org/10.1002/mus.21696 DB - PRIME DP - Unbound Medicine ER -