RESUMEN
We present a historical review, highlighting the role of Professor Derek Denny-Brown and doctor Joseph Buford Pennybacker in the development of current electromyography (EMG), of the 80 years since the publication of his original report in 1938 on fasciculation and fibrillation potentials and the subsequent studies describing most of the electrical changes necessary to perform and interpret the EMG.
Asunto(s)
Esclerosis Amiotrófica Lateral , Electromiografía/historia , Médicos , Esclerosis Amiotrófica Lateral/diagnóstico , Arritmias Cardíacas , Fasciculación/diagnóstico , Historia del Siglo XX , Historia del Siglo XXI , HumanosRESUMEN
ABSTRACT We present a historical review, highlighting the role of Professor Derek Denny-Brown and doctor Joseph Buford Pennybacker in the development of current electromyography (EMG), of the 80 years since the publication of his original report in 1938 on fasciculation and fibrillation potentials and the subsequent studies describing most of the electrical changes necessary to perform and interpret the EMG.
RESUMO Os autores apresentam uma revisão histórica destacando o papel do Professor Derek Denny-Brown e do doutor Joseph Buford Pennybacker no desenvolvimento da eletromiografia atual, ao longo dos oitenta anos de seu artigo original em 1938, sobre potenciais de fasciculação e fibrilação, e os estudos subsequentes que descreveram a maioria das mudanças elétricas necessárias para realizar e interpretar EMG.
Asunto(s)
Humanos , Historia del Siglo XX , Historia del Siglo XXI , Médicos , Electromiografía/historia , Esclerosis Amiotrófica Lateral/diagnóstico , Arritmias Cardíacas , Fasciculación/diagnósticoRESUMEN
BACKGROUND: Neuromyelitis optica spectrum disorders (NMOSDs) are rare antibody-mediated disorders of the central nervous system, with a predilection for the spinal cord and optic nerves. The clinical utility of evoked potential recordings (EPs) has already been established for multiple sclerosis, in particular, that of the abnormal visual evoked potentials (VEP), a key criterion in the McDonald diagnostic criteria for MS. However, there have been few reports on EPs in patients with NMOSD. AIM: The aim of our study was to assess the possible involvement of the optical pathway through VEP responses in patients with NMOSD. METHODS: VEPs were prospectively performed in 13 patients with NMOSD. All the patients were recruited from the outpatient clinic of a demyelinating diseases center. The recording was done as recommended by the International Federation of Clinical Neurophysiology. RESULTS: We evaluated the eyes of 12 women with a mean age of 42 years and of one man who was 25 years old. In 6 of the examined eye samples, a response was not obtained, while in the remaining 20 eye samples, we found a significant increase in P100 latency without amplitude change. CONCLUSION: VEPs showed a significant increase in P100 latency. VEP assessment is a non-invasive, painless, fast, and low-cost exam that provides neurophysiological data for diagnosis of NMOSD.