Estimation of Median Nerve Axonal Degeneration without Needle Electromyography

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HOSSEININEZHAD MOZAFFAR; Ghayeghran Amir Reza; Nasiri Paria; SAADAT SAJJAD; Esmaili Katayoun; Homaei Rad Enayatollah; Gholipour Soleimani Zahra

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Journal: IRANIAN JOURNAL OF NEUROSURGERY Year:2021 | Volume:7 | Issue:1 (24) Page(s): 23-30

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Title

Estimation of Median Nerve Axonal Degeneration without Needle Electromyography

Author(s)

Keywords

Median nerve

Electromyography

Carpal tunnel syndrome

Abstract

Background and Aim: The present study aimed to use the Median nerve Compound Muscle Action Potential (CMAP) amplitude by stimulation at the palm instead of Abductor Pollicis Brevis (APB) needle Electromyography (EMG) for determining axonal loss in patients with Carpal tunnel syndrome (CTS). Methods and Materials/Patients: This study was performed on 180 patients with CTS referred to the Electrodiagnostic (EDX) Center, Poursina Hospital, Guilan Province, Iran, in 2018-19. In this study, the APB needle EMG diagnostic test was used as the gold standard, and Median nerve CMAP amplitude with stimulation at the palm and wrist were used to compare the two nerve stimulation tests. Results: All of the cases with abnormal amplitude loss detected by Median nerve stimulation at the palm also had an axonal loss in the needle EMG of APB. So this test could be a good indicator of axonal loss if there is an abnormality (sensitivity: 73%, specificity: 100%). The results with wrist stimulation were not as accurate as of the palm stimulation, and some cases with decreased CMAP amplitude of Median nerve had normal needle EMG of APB muscle (sensitivity: 86. 6%, specificity: 94. 9%). Conclusion: In cases with CTS, the abnormally decreased amplitude of the Median nerve detected by stimulation at the palm could be a good indicator of axonal loss.

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APA: Copy

HOSSEININEZHAD, MOZAFFAR, Ghayeghran, Amir Reza, Nasiri, Paria, SAADAT, SAJJAD, Esmaili, Katayoun, Homaei Rad, Enayatollah, & Gholipour Soleimani, Zahra. (2021). Estimation of Median Nerve Axonal Degeneration without Needle Electromyography. IRANIAN JOURNAL OF NEUROSURGERY, 7(1 (24)), 23-30. SID. https://sid.ir/paper/691286/en

Vancouver: Copy

HOSSEININEZHAD MOZAFFAR, Ghayeghran Amir Reza, Nasiri Paria, SAADAT SAJJAD, Esmaili Katayoun, Homaei Rad Enayatollah, Gholipour Soleimani Zahra. Estimation of Median Nerve Axonal Degeneration without Needle Electromyography. IRANIAN JOURNAL OF NEUROSURGERY[Internet]. 2021;7(1 (24)):23-30. Available from: https://sid.ir/paper/691286/en

IEEE: Copy

MOZAFFAR HOSSEININEZHAD, Amir Reza Ghayeghran, Paria Nasiri, SAJJAD SAADAT, Katayoun Esmaili, Enayatollah Homaei Rad, and Zahra Gholipour Soleimani, “Estimation of Median Nerve Axonal Degeneration without Needle Electromyography,” IRANIAN JOURNAL OF NEUROSURGERY, vol. 7, no. 1 (24), pp. 23–30, 2021, [Online]. Available: https://sid.ir/paper/691286/en

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