Prognostic significance of electrophysiological investigations in stroke patients: somatosensory and motor evoked potentials and sympathetic skin response.
A prospective 3-month follow-up examination was carried out in 12 patients with supratentorial stroke. Motor evoked potentials (MEP), somatosensory evoked potentials (SEP) and sympathetic skin responses (SSR) were performed 1-7 days, 30 days and 3 months after stroke. The functional outcome measured by a daily activity index (Barthel index) was assessed 3 months after the stroke. There was a significant correlation between SEP and MEP results obtained for the first week and recovery of sensation and motility 3 months later. When initially normal, motor potentials evoked by transcranial magnetic stimulation had a significant predictive value for long-term functional outcome, whereas SEP and SSR did not. SSR present at the initial stage was correlated with the state of consciousness.
Laboratoire des explorations fonctionnelles, hôpital GR-Laënnec, Nantes, France.
Y
Y
Péréon
P
P
Aubertin
P
P
Guihéneuc
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002543:Cerebral Hemorrhage / Q000503:physiopathology*; D002544:Cerebral Infarction / Q000503:physiopathology*; D019054:Evoked Potentials, Motor / Q000502:physiology*; D005073:Evoked Potentials, Somatosensory / Q000502:physiology*; D005260:Female; D005500:Follow-Up Studies; D005712:Galvanic Skin Response / Q000502:physiology*; D006801:Humans; D008280:Magnetics; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D011446:Prospective Studies