Ulnar sensory-motor amplitude ratio: a new tool to differentiate ganglionopathy from polyneuropathy
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Arquivos de neuro-psiquiatria (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X2013000700465 |
Resumo: | The objective of this study was to evaluate if the ratio of ulnar sensory nerve action potential (SNAP) over compound muscle action potential (CMAP) amplitudes (USMAR) would help in the distinction between ganglionopathy (GNP) and polyneuropathy (PNP).MethodsWe reviewed the nerve conductions studies and electromyography (EMG) of 18 GNP patients, 33 diabetic PNP patients and 56 controls. GNP was defined by simultaneous nerve conduction studies (NCS) and magnetic resonance imaging (MRI) abnormalities. PNP was defined by usual clinical and NCS criteria. We used ANOVA with post-hoc Tukey test and ROC curve analysis to compare ulnar SNAP and CMAP, as well as USMAR in the groups.ResultsUlnar CMAP amplitudes were similar between GNP x PNP x Controls (p=0.253), but ulnar SNAP amplitudes (1.6±3.2 x 11.9±9.1 × 45.7±24.7) and USMAR values (0.3±0.3 × 1.5±0.9 × 4.6±2.2) were significantly different. A USMAR threshold of 0.71 was able to differentiate GNP and PNP (94.4% sensitivity and 90.9% specificity).ConclusionsUSMAR is a practical and reliable tool for the differentiation between GNP and PNP. |
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Ulnar sensory-motor amplitude ratio: a new tool to differentiate ganglionopathy from polyneuropathyclinical neurophysiologyganglionopathypolyneuropathysensory neuronopathyulnar nerveThe objective of this study was to evaluate if the ratio of ulnar sensory nerve action potential (SNAP) over compound muscle action potential (CMAP) amplitudes (USMAR) would help in the distinction between ganglionopathy (GNP) and polyneuropathy (PNP).MethodsWe reviewed the nerve conductions studies and electromyography (EMG) of 18 GNP patients, 33 diabetic PNP patients and 56 controls. GNP was defined by simultaneous nerve conduction studies (NCS) and magnetic resonance imaging (MRI) abnormalities. PNP was defined by usual clinical and NCS criteria. We used ANOVA with post-hoc Tukey test and ROC curve analysis to compare ulnar SNAP and CMAP, as well as USMAR in the groups.ResultsUlnar CMAP amplitudes were similar between GNP x PNP x Controls (p=0.253), but ulnar SNAP amplitudes (1.6±3.2 x 11.9±9.1 × 45.7±24.7) and USMAR values (0.3±0.3 × 1.5±0.9 × 4.6±2.2) were significantly different. A USMAR threshold of 0.71 was able to differentiate GNP and PNP (94.4% sensitivity and 90.9% specificity).ConclusionsUSMAR is a practical and reliable tool for the differentiation between GNP and PNP.Academia Brasileira de Neurologia - ABNEURO2013-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X2013000700465Arquivos de Neuro-Psiquiatria v.71 n.7 2013reponame:Arquivos de neuro-psiquiatria (Online)instname:Academia Brasileira de Neurologiainstacron:ABNEURO10.1590/0004-282X20130063info:eu-repo/semantics/openAccessGarcia,Raphael UbirajaraRicardo,João Adilson GamaHorta,Cassiana AbreuGaribaldi,Solange GarciaNucci,AnamarliFrança Junior,Marcondes Cavalcanteeng2015-10-23T00:00:00Zoai:scielo:S0004-282X2013000700465Revistahttp://www.scielo.br/anphttps://old.scielo.br/oai/scielo-oai.php||revista.arquivos@abneuro.org1678-42270004-282Xopendoar:2015-10-23T00:00Arquivos de neuro-psiquiatria (Online) - Academia Brasileira de Neurologiafalse |
dc.title.none.fl_str_mv |
Ulnar sensory-motor amplitude ratio: a new tool to differentiate ganglionopathy from polyneuropathy |
title |
Ulnar sensory-motor amplitude ratio: a new tool to differentiate ganglionopathy from polyneuropathy |
spellingShingle |
Ulnar sensory-motor amplitude ratio: a new tool to differentiate ganglionopathy from polyneuropathy Garcia,Raphael Ubirajara clinical neurophysiology ganglionopathy polyneuropathy sensory neuronopathy ulnar nerve |
title_short |
Ulnar sensory-motor amplitude ratio: a new tool to differentiate ganglionopathy from polyneuropathy |
title_full |
Ulnar sensory-motor amplitude ratio: a new tool to differentiate ganglionopathy from polyneuropathy |
title_fullStr |
Ulnar sensory-motor amplitude ratio: a new tool to differentiate ganglionopathy from polyneuropathy |
title_full_unstemmed |
Ulnar sensory-motor amplitude ratio: a new tool to differentiate ganglionopathy from polyneuropathy |
title_sort |
Ulnar sensory-motor amplitude ratio: a new tool to differentiate ganglionopathy from polyneuropathy |
author |
Garcia,Raphael Ubirajara |
author_facet |
Garcia,Raphael Ubirajara Ricardo,João Adilson Gama Horta,Cassiana Abreu Garibaldi,Solange Garcia Nucci,Anamarli França Junior,Marcondes Cavalcante |
author_role |
author |
author2 |
Ricardo,João Adilson Gama Horta,Cassiana Abreu Garibaldi,Solange Garcia Nucci,Anamarli França Junior,Marcondes Cavalcante |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Garcia,Raphael Ubirajara Ricardo,João Adilson Gama Horta,Cassiana Abreu Garibaldi,Solange Garcia Nucci,Anamarli França Junior,Marcondes Cavalcante |
dc.subject.por.fl_str_mv |
clinical neurophysiology ganglionopathy polyneuropathy sensory neuronopathy ulnar nerve |
topic |
clinical neurophysiology ganglionopathy polyneuropathy sensory neuronopathy ulnar nerve |
description |
The objective of this study was to evaluate if the ratio of ulnar sensory nerve action potential (SNAP) over compound muscle action potential (CMAP) amplitudes (USMAR) would help in the distinction between ganglionopathy (GNP) and polyneuropathy (PNP).MethodsWe reviewed the nerve conductions studies and electromyography (EMG) of 18 GNP patients, 33 diabetic PNP patients and 56 controls. GNP was defined by simultaneous nerve conduction studies (NCS) and magnetic resonance imaging (MRI) abnormalities. PNP was defined by usual clinical and NCS criteria. We used ANOVA with post-hoc Tukey test and ROC curve analysis to compare ulnar SNAP and CMAP, as well as USMAR in the groups.ResultsUlnar CMAP amplitudes were similar between GNP x PNP x Controls (p=0.253), but ulnar SNAP amplitudes (1.6±3.2 x 11.9±9.1 × 45.7±24.7) and USMAR values (0.3±0.3 × 1.5±0.9 × 4.6±2.2) were significantly different. A USMAR threshold of 0.71 was able to differentiate GNP and PNP (94.4% sensitivity and 90.9% specificity).ConclusionsUSMAR is a practical and reliable tool for the differentiation between GNP and PNP. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-07-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X2013000700465 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X2013000700465 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0004-282X20130063 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Academia Brasileira de Neurologia - ABNEURO |
publisher.none.fl_str_mv |
Academia Brasileira de Neurologia - ABNEURO |
dc.source.none.fl_str_mv |
Arquivos de Neuro-Psiquiatria v.71 n.7 2013 reponame:Arquivos de neuro-psiquiatria (Online) instname:Academia Brasileira de Neurologia instacron:ABNEURO |
instname_str |
Academia Brasileira de Neurologia |
instacron_str |
ABNEURO |
institution |
ABNEURO |
reponame_str |
Arquivos de neuro-psiquiatria (Online) |
collection |
Arquivos de neuro-psiquiatria (Online) |
repository.name.fl_str_mv |
Arquivos de neuro-psiquiatria (Online) - Academia Brasileira de Neurologia |
repository.mail.fl_str_mv |
||revista.arquivos@abneuro.org |
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