title: [Nerve compression syndrome in the thoracic outlet].
abstract: BACKGROUND
  The nerve conduction studies, F-waves and dermatosomal and lor somatosensory evoked potential have a low level of sensitivity for Thoracic Outlet Compression Syndrome (TOCS) diagnosis. A standard negative electrodiagnostic study does not exclude the presence of TOCS.
  
  
  OBJECTIVE
  The purpose of this neurophysiological note is that the Wright's hyperabduction, costoclavicular compression and Adson's scalenus tests important in making a clinical diagnosis of TOCS can be used as neurophysiological provocative maneuvers to determine the effect of braquial position on electrodiagnostic parameters.
  
  
  METHODS
  Nine selected TOCS patients were evaluated previous and following provocative maneuvers for 3 and 6 minutes.
  
  
  RESULTS
  The results showed a positive electrodiagnostic study in 7/9 patients.
  
  
  CONCLUSIONS
  It is suggested that patients with presumptive TOCS and negative electrodiagnostic findings be reevaluated immediately after 6 minutes of Wright's, Adson's or costoclavicular compression provocative tests.
authors.affiliation: Servicio de Neurofisiología Clínica, Hospital Central de Asturias, España.
authors.forename: F
authors.initials: F
authors.lastname: Fernández-González
authors.forename: T
authors.initials: T
authors.lastname: Suárez-Fernández
mesh_terms: D001917:Brachial Plexus / Q000503:physiopathology; D004576:Electromyography / Q000295:instrumentation; D005073:Evoked Potentials, Somatosensory; D006801:Humans; D009431:Neural Conduction / Q000502:physiology; D013901:Thoracic Outlet Syndrome / Q000175:diagnosis* / Q000503:physiopathology
vernacular_title: Síndrome de la compresión neurógena en la salida torácica.