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Information Journal Paper

Title

The Usefulness of Calculated Electrophysiological Parameters in Assessing the Severity of Carpal Tunnel Syndrome

Pages

  156-160

Abstract

 Background: Carpal Tunnel Syndrome (CTS) is the most common type of mononeuropathy. Although CTS patients usually have sensory and motor latency in the EMG-NCV or EDX, a significant percentage (10-25%) of patients have a normal routine study. And if more complete diagnostic tests are not performed, it will not be diagnosed. We decided to identify this group of patients by calculating other methods. Methods: We evaluated 131 patients with CTS and 34 persons from the asymptomatic group as controls (297 hands in total). Individuals were then divided into 4 groups: asymptomatic, mild, moderate, and severe based on the severity of the disease. Calculated Electrophysiological Parameters were measured using nerve conduction studies. For each group, we calculated the sensitivity and specificity of 4 indicators separately including terminal latency index (TLI), residual latency (RL), modified F-wave latency ratio (MFR), difference of the minimal F-wave latencies between the median and ulnar nerves (F-diff M-U), and finally obtained the best parameter according to the total sensitivity and specificity. We also determined the cutting point for each parameter. Results: RL index (90. 7%) has the highest sensitivity for diagnosing mild cases and F-diff M-U index (50%) has the highest specificity. TLI and MFR indices have the highest sensitivity for diagnosing moderate cases and RL index (84. 6%) has the highest specificity. RL index (94. 6%) has the highest sensitivity for diagnosing severe cases and MFR index (86. 5%) has the highest specificity. Conclusion: The best indicator for distinguishing CTS from normal cases, as well as determining its severity, is RI.

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    APA: Copy

    okkhovat, Ali Asghar, & vahbizad, Fahimeh. (2020). The Usefulness of Calculated Electrophysiological Parameters in Assessing the Severity of Carpal Tunnel Syndrome. JOURNAL OF MEDICAL COUNCIL OF I.R.I., 38(3 ), 156-160. SID. https://sid.ir/paper/390647/en

    Vancouver: Copy

    okkhovat Ali Asghar, vahbizad Fahimeh. The Usefulness of Calculated Electrophysiological Parameters in Assessing the Severity of Carpal Tunnel Syndrome. JOURNAL OF MEDICAL COUNCIL OF I.R.I.[Internet]. 2020;38(3 ):156-160. Available from: https://sid.ir/paper/390647/en

    IEEE: Copy

    Ali Asghar okkhovat, and Fahimeh vahbizad, “The Usefulness of Calculated Electrophysiological Parameters in Assessing the Severity of Carpal Tunnel Syndrome,” JOURNAL OF MEDICAL COUNCIL OF I.R.I., vol. 38, no. 3 , pp. 156–160, 2020, [Online]. Available: https://sid.ir/paper/390647/en

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