Description of an alternative method for the electrodiagnostic evaluation of the sensory radial nerve

IF 2.7 4区医学 Q2 CLINICAL NEUROLOGY

Neurophysiologie Clinique/Clinical Neurophysiology Pub Date : 2025-02-06 DOI:10.1016/j.neucli.2025.103058

Martin Moussy , Julie Rode , Thierry Maisonobe , Nagham Khanafer , Françoise Bouhour , Antoine Pegat

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引用次数: 0

Abstract

Objectives

The aim of this study was to describe an alternative method for the electrodiagnostic (EDX) evaluation of the sensory radial nerve (SRN).

Methods

In this retrospective study, all patients from a French EDX center (November 2022-April 2023) for whom SNAP amplitudes of the same SRN were obtained through both a conventional and an alternative method were included. In the conventional method, the active recording electrode was placed at the base of the snuff box, whereas in the alternative method, it was placed 3-4 cm proximally on the lateral border of the radial bone. The SNAP amplitudes of both methods were compared and the ratio of alternative to conventional amplitude was determined within the same patient. A secondary objective was to compare SNAP amplitudes and ratios between patients with peripheral neuropathy and those without (control group).

Results

Among the 117 patients included, the mean ± SD SNAP amplitude was 50.0±28.9 µV in the alternative method compared to 31.0±17.9 µV in the conventional method. The ratio of alternative to conventional amplitudes was 1.64±0.4 in all patients. No significant difference in amplitude ratios was found between the peripheral neuropathy group (1.63 ± 0.4) and the control group (1.65 ± 0.3; p =0.75).

Discussion

The alternative method, based on a more proximal placement of the recording electrodes, consistently provided larger SNAP amplitudes than the conventional method. This method could be useful in particular clinical settings but could prove more challenging in obese or muscular patients.

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描述一种替代方法的电诊断评估感觉桡神经

目的本研究的目的是描述一种电诊断（EDX）评估感觉桡神经（SRN）的替代方法。方法在这项回顾性研究中，所有来自法国EDX中心（2022年11月- 2023年4月）的患者均通过常规方法和替代方法获得了相同SRN的SNAP振幅。在常规方法中，将主动记录电极放置在鼻烟壶底部，而在替代方法中，将其放置在桡骨侧缘近端3-4 cm处。比较两种方法的SNAP振幅，并确定同一患者内替代振幅与常规振幅的比值。次要目的是比较周围神经病变患者和非周围神经病变患者（对照组）的SNAP振幅和比值。结果117例患者中，替代方法的SNAP振幅平均值±SD为50.0±28.9µV，而常规方法的SNAP振幅平均值为31.0±17.9µV。所有患者的替代振幅与常规振幅之比为1.64±0.4。周围神经病变组（1.63±0.4）与对照组（1.65±0.3）的振幅比差异无统计学意义；p = 0.75)。基于更近距离放置记录电极的替代方法始终提供比传统方法更大的SNAP振幅。这种方法在特定的临床环境中可能有用，但在肥胖或肌肉发达的患者中可能更具挑战性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Neurophysiologie Clinique/Clinical Neurophysiology 医学-临床神经学

CiteScore

5.20

自引率

3.30%

发文量

审稿时长

60 days

期刊介绍： Neurophysiologie Clinique / Clinical Neurophysiology (NCCN) is the official organ of the French Society of Clinical Neurophysiology (SNCLF). This journal is published 6 times a year, and is aimed at an international readership, with articles written in English. These can take the form of original research papers, comprehensive review articles, viewpoints, short communications, technical notes, editorials or letters to the Editor. The theme is the neurophysiological investigation of central or peripheral nervous system or muscle in healthy humans or patients. The journal focuses on key areas of clinical neurophysiology: electro- or magneto-encephalography, evoked potentials of all modalities, electroneuromyography, sleep, pain, posture, balance, motor control, autonomic nervous system, cognition, invasive and non-invasive neuromodulation, signal processing, bio-engineering, functional imaging.