
Fulltext:
53011.pdf
Embargo:
until further notice
Size:
227.1Kb
Format:
PDF
Description:
Publisher’s version
Publication year
2007Source
Journal of Clinical Neurophysiology, 24, 6, (2007), pp. 450-5ISSN
Publication type
Article / Letter to editor

Display more detailsDisplay less details
Organization
Rehabilitation
Neurology
Journal title
Journal of Clinical Neurophysiology
Volume
vol. 24
Issue
iss. 6
Page start
p. 450
Page end
p. 5
Subject
DCN 1: Perception and Action; DCN 2: Functional Neurogenomics; NCEBP 10: Human Movement & Fatigue; UMCN 3.2 Cognitive Neurosciences; UMCN 3.2: Cognitive neurosciencesAbstract
The primary goal of this study was to identify secondary functional changes in the peripheral motor units of the paretic upper extremity (UE) in patients with severe ischemic stroke and to determine how these changes develop during the first weeks after stroke. An inception cohort of 27 consecutive patients with an acute ischemic supratentorial stroke and an initial UE paralysis was compared with 10 healthy control subjects. The ulnar nerve was electrically stimulated proximal to the wrist and electromyographic recordings were obtained from the abductor digiti minimi muscle. Hemiparetic side mean values of the compound muscle action potential (CMAP) 1 and 3 weeks after stroke were compared with the nonparetic side and with CMAP values obtained from healthy control subjects. The mean CMAP amplitude in patients was significantly lower on the paretic side compared with the nonparetic side and with control subjects. Decrease in CMAP amplitude was observed in more than half of the stroke patients, sometimes as early as 4 days after stroke, and persisted in most cases. Whenever present, it was accompanied by absence of motor recovery at that specific time after stroke. Decreased CMAP amplitude in the abductor digiti minimi muscle can be seen already in the very acute phases after stroke unrelated to peripheral neuropathy, radiculopathy, or plexopathy, and it is accompanied by absence of UMN recovery. This knowledge is important for interpreting electrophysiological data in stroke patients.
This item appears in the following Collection(s)
- Academic publications [234365]
- Electronic publications [117392]
- Faculty of Medical Sciences [89214]
Upload full text
Use your RU credentials (u/z-number and password) to log in with SURFconext to upload a file for processing by the repository team.