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[Nerve compression syndrome in the thoracic outlet]
F Fernández-González1, T Suárez-Fernández
1Servicio de Neurofisiología Clínica, Hospital Central de Asturias, España.
Introduction:
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.
Material And 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.