Document Detail

Can electromyography predict the prognosis of transverse myelitis?
MedLine Citation:
PMID:  9808244     Owner:  NLM     Status:  MEDLINE    
The role of clinical and magnetic resonance imaging (MRI) features on the prognosis of acute transverse myelitis has been studied, but the role of electromyography (EMG) changes, although reported, has not been investigated. Seventeen patients with acute transverse myelitis were subjected to clinical evaluation, MRI scanning and concentric needle EMG. The outcome was defined on the basis of a 3-month Barthel Index (BI) score as good or poor. The EMG changes in these groups were compared. All of the patients had complete paraplegia (power grade 0), except 1 who had grade III power. Mild upper limb weakness was present in 6 patients. Joint position and vibration sense were impaired in the lower limbs, and a horizontal limit to sensory loss to pinprick was present in all of the patients. Spinal MRI was abnormal in 12 of 14 patients. EMG of the lower limb muscles in the acute stage (within 15-30 days of onset) revealed fibrillations or sharp waves or both in 11 patients. At 3-month follow-up, the lower limb power had improved in 8 and upper limbs in all 6 patients. The EMG changes also improved in 6 patients; fibrillations either disappeared or were markedly reduced. The motor unit potentials (MUPs) were of long duration, polyphasic with reduced recruitment. In 5 patients, however, no MUPs could be recorded and fibrillations persisted. Lower limb hypotonia and fibrillations on EMG were significantly related to the 3-month outcome. EMG evidence of denervation in the lower limb muscles in acute transverse myelitis suggests a poor outcome as assessed by 3-month Barthel index score.
U K Misra; J Kalita
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of neurology     Volume:  245     ISSN:  0340-5354     ISO Abbreviation:  J. Neurol.     Publication Date:  1998 Nov 
Date Detail:
Created Date:  1999-01-22     Completed Date:  1999-01-22     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0423161     Medline TA:  J Neurol     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  741-4     Citation Subset:  IM    
Department of Neurology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India.
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MeSH Terms
Magnetic Resonance Imaging
Middle Aged
Muscle Weakness
Myelitis, Transverse / diagnosis*,  pathology
Predictive Value of Tests

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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