Nerve Ultrasound of Multifocal Motor Neuropathy and Motor and Typical Chronic Inflammatory Demyelinating Neuropathy

被引:0
作者
Niu, Jingwen [1 ,2 ]
Ding, Qingyun [1 ,2 ]
Hu, Nan [1 ,2 ]
Cui, Liying [1 ,2 ]
Liu, Mingsheng [1 ,2 ]
机构
[1] Chinese Acad Med Sci, Peking Union Med Coll Hosp, Dept Neurol, Beijing, Peoples R China
[2] Peking Union Med Coll, Beijing, Peoples R China
关键词
multifocal motor neuropathy; nerve ultrasound; nerve conduction studies; motor CIDP; typical CIDP; SOCIETY GUIDELINE;
D O I
10.1017/cjn.2025.10136
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Objective: Both multifocal motor neuropathy (MMN) and chronic inflammatory demyelinating polyneuropathy (CIDP) are chronic progressive immune-mediated peripheral neuropathies without sensory loss. We aimed to explore the different features of ultrasonographic and electrophysiological changes among MMN, motor CIDP and typical CIDP patients.Methods: Nerve ultrasonographic studies were performed in 19 patients with MMN, 15 patients with motor CIDP and 117 patients with typical CIDP. Cross-sectional areas (CSAs) were measured on the bilateral median and ulnar nerves and brachial plexus. Nerve conduction studies (NCSs) were performed on the median and ulnar nerves.Results: In patients with MMN and typical CIDP, the percentage enlargement in the brachial plexus (MMN 45.7%, typical CIDP 78%) was similar to that in the arm (MMN 42.9%, typical CIDP 76.8%) and forearm (MMN 42.9%, typical CIDP 79.4%). However, in patients with motor CIDP, the percentage enlargement in the brachial plexus (74.1%) was more pronounced than in the arm (65.5%) and forearm (58.6%). The CMAPerb/CMAPaxilla in MMN was significantly higher than in motor CIDP (median nerve, 0.82 +/- 0.28 for MMN and 0.60 +/- 0.37 for motor CIDP, P = 0.017). The CSA decreased in the order of typical CIDP, motor predominant CIDP (MPred-CIDP), pure motor CIDP (PM-CIDP) and MMN. The motor nerve conduction velocity increased in the order of typical CIDP, MPred-CIDP, PM-CIDP and MMN. A total of 3/6 PM-CIDP and 3/3 MPred-CIDP patients responded to steroid treatment.Conclusion: Treatment response, nerve ultrasonography and NCS in MMN, PM-CIDP, MPred-CIDP and typical CIDP constitute a spectrum. & Eacute;chographie des nerfs dans le cas de la neuropathie motrice multifocale et de la neuropathie d & eacute;my & eacute;linisante inflammatoire chronique typique et motrice.Objectif : La neuropathie motrice multifocale (NMM) et la polyneuropathie inflammatoire d & eacute;my & eacute;linisante chronique (PIDC) sont des neuropathies p & eacute;riph & eacute;riques chroniques progressives & agrave; m & eacute;diation immunitaire et sans perte sensorielle. Nous avons ainsi cherch & eacute; & agrave; explorer les diff & eacute;rentes caract & eacute;ristiques des changements & eacute;chographiques et & eacute;lectrophysiologiques chez des patients atteints de NMM, de PIDC motrice et de PIDC typique.M & eacute;thodes : Des & eacute;tudes par & eacute;chographie des nerfs ont & eacute;t & eacute; effectu & eacute;es chez 19 patients atteints de NMM, 15 patients atteints de PIDC motrice et 117 patients atteints de PIDC typique. Les surfaces de section transversale (SST) ont & eacute;t & eacute; mesur & eacute;es sur les nerfs m & eacute;dian et ulnaire bilat & eacute;raux et sur le plexus brachial. Des & eacute;tudes de conduction nerveuse (ECN) ont & eacute;t & eacute; men & eacute;es sur les nerfs m & eacute;dian et cubital.R & eacute;sultats : Chez les patients atteints de NMM et de PIDC typique, le pourcentage d'hypertrophie du plexus brachial (NMM 45,7 %, PIDC typique 78 %) & eacute;tait similaire & agrave; celui du bras (NMM 42,9 %, PIDC typique 76,8 %) et de l'avant-bras (NMM 42,9 %, PIDC typique 79,4 %). En revanche, chez les patients atteints de PIDC motrice, le pourcentage d'hypertrophie du plexus brachial (74,1 %) est plus prononc & eacute; que celui du bras (65,5 %) et de l'avant-bras (58,6 %). La CMAPerb/CMAPaxilla dans la NMM & eacute;tait significativement plus & eacute;lev & eacute;e que dans la PIDC motrice (nerf m & eacute;dian : 0,82 +/- 0,28 pour la NMM et 0,60 +/- 0,37 pour la PIDC motrice, p = 0,017). En ce qui concerne les SST, on a observ & eacute; les diminutions les plus notables dans l'ordre suivant : PIDC typique, PIDC & agrave; pr & eacute;dominance motrice, PIDC purement motrice et NMM. La vitesse de conduction du nerf moteur a par ailleurs augment & eacute; dans l'ordre suivant : PIDC typique, PIDC & agrave; pr & eacute;dominance motrice, PIDC purement motrice et NMM. Au total, 3 patients sur 6 atteints de PIDC purement motrice et 3 patients sur 3 patients atteints de PIDC & agrave; pr & eacute;dominance motrice ont r & eacute;pondu & agrave; des traitements par st & eacute;ro & iuml;des.Conclusion : La r & eacute;ponse aux traitements, l'& eacute;chographie des nerfs et les ECN dans le cas de la NMM, de la PIDC purement motrice, de la PIDC & agrave; pr & eacute;dominance motrice et de la PIDC typique constituent un spectre (spectrum).
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