Central motor conduction in brachial monomelic amyotrophy.

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dc.contributor.authorPal, Pramod Ken_US
dc.contributor.authorAtchayaram, Nalinien_US
dc.contributor.authorGoel, Gauraven_US
dc.contributor.authorBeulah, Ebenezeren_US
dc.date.accessioned2008-10-08en_US
dc.date.accessioned2009-06-03T12:35:08Z
dc.date.available2008-10-08en_US
dc.date.available2009-06-03T12:35:08Z
dc.date.issued2008-10-08en_US
dc.description.abstractBACKGROUND: Prevalence of subclinical involvement of motor pathways in clinically diagnosed Brachial Monomelic Amyotrophy (BMMA) is unknown. AIMS: To determine the prevalence of subclinical involvement of central motor pathways in BMMA using transcranial magnetic stimulation. SETTING AND DESIGN: Prospective case-control study. MATERIALS AND METHODS: Central motor conduction time (CMCT) was determined by 'F' wave method using figure-of-eight coil attached to Magstim 200 stimulator, in 17 patients with BMMA. Motor evoked potentials were recorded from first dorsal interosseous of the affected (AFF) and unaffected upper limbs (UNAFF) at rest and during partial contraction. Comparison was made with data from 10 healthy controls (CTRL). STATISTICAL ANALYSIS: Descriptive analysis and Analysis of Variance (ANOVA). RESULTS: Compared to controls, the mean CMCT of AFF was significantly prolonged, both at rest and contraction: (a) Rest: AFF-6.68+/-1.78 ms, UNAFF-6.36+/-1.16 ms, CTRL-5.71+/-1.02 ms; Fisher's PLSD for AFF vs. CTRL: P =0.037, (b) Contraction: AFF-5.78+/-1.62 ms, UAFF - 4.86+/-1.38 ms, CTRL-4.06+/-0.80 ms; Fisher's PLSD for AFF vs. CTRL; P =0.0002, AFF vs. UNAFF- P =0.044). Prolonged CMCT (>mean+2SD of controls) was observed in 29.4% of AFF and 6.25% of UNAFF at rest, and in 47.1% and 23.5% respectively during contraction. CONCLUSIONS: Dysfunction of central motor pathways was observed in both affected and unaffected upper limbs of some patients with BMMA of upper limbs. The dysfunction was more pronounced during voluntary contraction. A larger study is needed to validate the significance of these findings.en_US
dc.description.affiliationDepartment of Neurology, National Institute of Mental Health and Neurosciences, Bangalore, India. palpramod@hotmail.comen_US
dc.identifier.citationPal PK, Atchayaram N, Goel G, Beulah E. Central motor conduction in brachial monomelic amyotrophy. Neurology India. 2008 Oct-Dec; 56(4): 438-43en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/121651
dc.language.isoengen_US
dc.source.urihttps://neurologyindia.comen_US
dc.subject.meshAdolescenten_US
dc.subject.meshAdulten_US
dc.subject.meshBrachial Plexus Neuritis --physiopathologyen_US
dc.subject.meshEfferent Pathways --physiopathologyen_US
dc.subject.meshElectromyographyen_US
dc.subject.meshFemaleen_US
dc.subject.meshHumansen_US
dc.subject.meshMagnetic Resonance Imagingen_US
dc.subject.meshMaleen_US
dc.subject.meshNeural Conduction --physiologyen_US
dc.subject.meshTranscranial Magnetic Stimulationen_US
dc.subject.meshUpper Extremity --innervationen_US
dc.subject.meshYoung Adulten_US
dc.titleCentral motor conduction in brachial monomelic amyotrophy.en_US
dc.typeJournal Articleen_US
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