Seror Paul, Seror Raphaéle
Laboratoire d'électromyographie, Avenue Ledru Rollin, 75011, Paris, France.
Muscle Nerve. 2015 Feb;51(2):201-6. doi: 10.1002/mus.24288. Epub 2014 Nov 19.
We evaluated the electrodiagnostic (EDX) pattern of severe and extreme median nerve lesions at the wrist (MNLW) in patients with idiopathic carpal tunnel syndrome.
EDX data were recorded in 229 patients with 314 severe and extreme MNLW and 447 patients with 777 non-severe MNLW. We recorded distal motor latency (DML) to abductor pollicis brevis (APB) and second lumbricalis (2L), sensory conduction (SC) from digits 2 and 3, and needle examination of APB.
Preservation rate of DML to APB and 2L and of SC from digits 2 and 3 were 100%, 100%, 85%, and 76%, respectively, for severe MNLW, and 37%, 90%, 36%, and 26% for extreme MNLW. Active denervation, as demonstrated by fibrillation potentials, was found in 1% of non-severe NMLW, 7% of severe MNLW, and 56% of extreme MNLW cases.
In idiopathic severe and extreme MNLW, the DML to the 2L and averaged SC from digit 2 can be present when other responses are absent.
我们评估了特发性腕管综合征患者腕部严重和极重度正中神经损伤（MNLW）的电诊断（EDX）模式。
记录了229例患有314处严重和极重度MNLW的患者以及447例患有777处非严重MNLW的患者的EDX数据。我们记录了至拇短展肌（APB）和第二蚓状肌（2L）的远端运动潜伏期（DML）、来自第2和第3指的感觉传导（SC）以及APB的针极检查。
对于严重MNLW，至APB和2L的DML以及来自第2和第3指的SC的保留率分别为100%、100%、85%和76%，对于极重度MNLW则分别为37%、90%、36%和26%。在1%的非严重MNLW、7%的严重MNLW和56%的极重度MNLW病例中发现了以纤颤电位为表现的主动失神经。
在特发性严重和极重度MNLW中，当其他反应缺失时，至2L的DML和来自第2指的平均SC可能存在。
