[Study of muscular evoked potentials by the built-up current in diagnosis of nerve injuries].
In 129 patients the diagnosis was defined over periods from 1 month to 2 years following the damage of the nerves with the help of myopotentials evoked through stimulation of the nerves with batches (charges) of a built-up current of varying frequency lasting for 1 second. With the lability of the neuro-muscular system falling from 35 down to 10 pulses/sec, a reduced amplitude of periliminal peak potentials, post-tetanic after-potentials and in the absence of pessimal inhibition of up to 1000 pulses/sec the operative treatment is, as a rule, not indicated. Late after injury and with a low amplitude of evoked myopotentials, falling down to 5--26 mug, an amplitude transformation from 2 up to 10 pulses/sec, the absence of periliminal rising peak potentials and post-tetanic after-potentials (spikes) surgery is commonly indicated. The operative intervention is also indicated in the absence of all types of the evoked myopotentials when this is combined with other factors.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D004558:Electric Stimulation; D005071:Evoked Potentials; D005542:Forearm / Q000294:innervation; D006225:Hand / Q000294:innervation; D006801:Humans; D008475:Median Nerve / Q000293:injuries*; D008875:Middle Aged; D009132:Muscles / Q000294:innervation / Q000503:physiopathology*; D009431:Neural Conduction; D014459:Ulnar Nerve / Q000293:injuries*; D014947:Wounds and Injuries / Q000175:diagnosis
Issledovanie vyzvannykh narastaiushchim tokom myshechnykh potentsialov v diagnostike povrezhdeniĭ nervov