Median nerve somatosensory evoked potentials in patients with lacunar and other small subcortical strokes Academic Article Article uri icon

Overview

MeSH Major

  • Brain Ischemia
  • Carotid Stenosis
  • Electroencephalography
  • Endarterectomy, Carotid
  • Intracranial Aneurysm
  • Intraoperative Complications
  • Monitoring, Intraoperative

abstract

  • We recorded median nerve somatosensory evoked potentials (SSEPs) in 42 patients with small subcortical strokes associated with lacunar syndromes. Seventeen patients had abnormal SSEPs. The P22 component was most often affected; changes in N20 and N18 were less common. Four patients with pure motor strokes (PMS) had abnormal SSEPs. Abnormalities of P22 correlated best with motor findings; those of N20 with sensory signs and symptoms. Similar SSEP abnormalities were produced by lesions in various locations. P22 and N20 abnormalities occurred independently and together. We conclude: (1) abnormal SSEPs are common in patients with small subcortical strokes associated with lacunar syndromes, including pure motor stroke; (2) P22 and N20 have separate cortical generators; and (3) P22 may be generated within sensory pathways which are adjacent to or influenced by motor pathways.

publication date

  • January 1991

Research

keywords

  • Academic Article

Identity

Digital Object Identifier (DOI)

  • 10.1016/0022-510X(91)90049-D

PubMed ID

  • 2033407

Additional Document Info

start page

  • 221

end page

  • 6

volume

  • 101

number

  • 2