[The electrophysiological diagnosis of carpal tunnel syndrome].

Electrophysiological investigations were carried out both in patients with carpal tunnel syndrome (CTS) and in healthy individuals. The evoked potentials were examined during stimulation of sensitive branches of n. medianus and of other nerves. The most sensitive and important for diagnosis appeared to be the electrophysiological test of alteration of responsive reaction to the stimulation of the sensitive branch of n. medianus for 4 finger and the considerable difference of evoked reactions on stimulation of skin palm branch and branch of the 1-st finger of n. medianus. The diagnostic importance of these indices corresponds well to anatomical and pathophysiological characteristics of CTS.