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Comparison between nerve conduction studies and current perception threshold test in carpal tunnel syndrome.
Neurophysiol Clin. 2008 Apr; 38(2):127-31.NC

Abstract

AIM OF STUDY

Nerve conduction studies (NCS) only test large myelinated A(alpha) or A(beta) nerve fibers, whereas the current perception threshold (CPT) test has been suggested to evaluate a wide range of nerve fibers (A(beta), A(delta) and C). This study was undertaken to compare CPT and the standard NCS test by Bland's severity scale with the patient-based measurement of symptoms and functional status of the hand by Boston CTS questionnaire assessment.

PATIENTS AND METHODS

We performed NCS and CPT on 31 patients (mean age 54.6+/-11.7 years; 31-79 years) with clinical diagnosis of CTS. NCS severity was classified according to Bland's scale and CPT was measured at 2000, 250 and 5 Hz and severity was graded between 0 and 12. Two-tailed Spearman's correlation analysis was performed to assess correlations between Boston questionnaire score and Bland's severity scale and CPT total score.

RESULTS

The results showed that Bland's scale, based on NCS, had more significant correlations with symptoms (Spearman's rho=0.402, p=0.002) and function (rho=0.400, p=0.001) than CPT total scores (rho=0.200, p=0.135; rho=0.234, p=0.069). In CPT, only score measure at 2000 Hz showed a significant correlation with Boston CTS questionnaire scores (with symptom rho=0.308, p=0.020; with function rho=0.302, p=0.018), whereas those measured at 250 Hz and 5 Hz did not (p>0.05).

CONCLUSION

Though CPT may have a supplementary role in the diagnosis of CTS, NCS better reflects patients' symptoms and functions than CPT on the patient's perspective.

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Authors+Show Affiliations

Kang EK
Department of Rehabilitation Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Bundang-Gu, Seongnam-City, South Korea.
Lim JY
No affiliation info available
Shin HI
No affiliation info available
Gong HS
No affiliation info available
Oh JH
No affiliation info available
Paik NJ
No affiliation info available

MeSH

AdultAgedCarpal Tunnel SyndromeElectric StimulationElectrodiagnosisFemaleHumansMiddle AgedNerve FibersNeural ConductionPerceptionSurveys and Questionnaires

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

18423333

Citation

Kang, E K., et al. "Comparison Between Nerve Conduction Studies and Current Perception Threshold Test in Carpal Tunnel Syndrome." Neurophysiologie Clinique = Clinical Neurophysiology, vol. 38, no. 2, 2008, pp. 127-31.
Kang EK, Lim JY, Shin HI, et al. Comparison between nerve conduction studies and current perception threshold test in carpal tunnel syndrome. Neurophysiol Clin. 2008;38(2):127-31.
Kang, E. K., Lim, J. Y., Shin, H. I., Gong, H. S., Oh, J. H., & Paik, N. J. (2008). Comparison between nerve conduction studies and current perception threshold test in carpal tunnel syndrome. Neurophysiologie Clinique = Clinical Neurophysiology, 38(2), 127-31. https://doi.org/10.1016/j.neucli.2007.12.003
Kang EK, et al. Comparison Between Nerve Conduction Studies and Current Perception Threshold Test in Carpal Tunnel Syndrome. Neurophysiol Clin. 2008;38(2):127-31. PubMed PMID: 18423333.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparison between nerve conduction studies and current perception threshold test in carpal tunnel syndrome. AU - Kang,E K, AU - Lim,J-Y, AU - Shin,H-I, AU - Gong,H S, AU - Oh,J H, AU - Paik,N-J, Y1 - 2008/01/31/ PY - 2007/07/30/received PY - 2007/09/28/revised PY - 2007/12/29/accepted PY - 2008/4/22/pubmed PY - 2008/8/9/medline PY - 2008/4/22/entrez SP - 127 EP - 31 JF - Neurophysiologie clinique = Clinical neurophysiology JO - Neurophysiol Clin VL - 38 IS - 2 N2 - AIM OF STUDY: Nerve conduction studies (NCS) only test large myelinated A(alpha) or A(beta) nerve fibers, whereas the current perception threshold (CPT) test has been suggested to evaluate a wide range of nerve fibers (A(beta), A(delta) and C). This study was undertaken to compare CPT and the standard NCS test by Bland's severity scale with the patient-based measurement of symptoms and functional status of the hand by Boston CTS questionnaire assessment. PATIENTS AND METHODS: We performed NCS and CPT on 31 patients (mean age 54.6+/-11.7 years; 31-79 years) with clinical diagnosis of CTS. NCS severity was classified according to Bland's scale and CPT was measured at 2000, 250 and 5 Hz and severity was graded between 0 and 12. Two-tailed Spearman's correlation analysis was performed to assess correlations between Boston questionnaire score and Bland's severity scale and CPT total score. RESULTS: The results showed that Bland's scale, based on NCS, had more significant correlations with symptoms (Spearman's rho=0.402, p=0.002) and function (rho=0.400, p=0.001) than CPT total scores (rho=0.200, p=0.135; rho=0.234, p=0.069). In CPT, only score measure at 2000 Hz showed a significant correlation with Boston CTS questionnaire scores (with symptom rho=0.308, p=0.020; with function rho=0.302, p=0.018), whereas those measured at 250 Hz and 5 Hz did not (p>0.05). CONCLUSION: Though CPT may have a supplementary role in the diagnosis of CTS, NCS better reflects patients' symptoms and functions than CPT on the patient's perspective. SN - 0987-7053 UR - https://www.unboundmedicine.com/medline/citation/18423333/Comparison_between_nerve_conduction_studies_and_current_perception_threshold_test_in_carpal_tunnel_syndrome_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0987-7053(08)00016-6 DB - PRIME DP - Unbound Medicine ER -