Carpal tunnel syndrome in the elderly: nerve conduction parameters

Arquivos de Neuro-Psiquiatria

Thiago Guimarães Naves²  João Aris Kouyoumdjian¹ 

[1] ,São José do Rio Preto State Medical School Department of Neurological Sciences Neuromuscular Investigation LaboratorySão José do Rio Preto SP ,Brazil

关键词: carpal tunnel syndrome;    median nerve;    nerve conduction studies;    normative study;    aging;    síndrome do túnel do carpo;    nervo mediano;    estudo de condução nervosa;    valores de normalidade;    envelhecimento;   

DOI  :  10.1590/S0004-282X2010000100019

来源: SciELO

【 摘 要 】

OBJECTIVE: To establish nerve conduction parameters for carpal tunnel syndrome (CTS) electrodiagnosis in the elderly. METHOD: Thirty healthy subjects (65-86 years), 9 male and 21 female, were studied. Routine median and ulnar sensory and motor nerve conduction studies, median mixed palmar latency, comparative latency techniques median to ulnar (sensory, mixed and motor lumbrical-interossei), median to radial (sensory), and combined sensory index (CSI) were performed in both hands. RESULTS: The upper limits of normality (97.5%) were: median sensory distal latency 3.80 ms (14 cm); median motor distal latency 4.30 ms (8 cm); median palmar latency 2.45 ms (8 cm); lumbrical-interossei latency difference 0.60 ms (8 cm); comparative median to radial 0.95 ms (10 cm); comparative median to ulnar 0.95 ms (14 cm); comparative palmar median to ulnar 0.50 ms (8 cm); and CSI 2.20 ms. Sensory and mixed latencies were measured at peak. CONCLUSION: Our results establish new nerve conduction parameters for mild CTS electrodiagnosis in the elderly and will be helpful to reduce the number of false positive cases in this age.

【 授权许可】

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