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- W2205393058 abstract "OBJECTIVE: The aim of this study is to test the utility of Clustering Index (CI) method, a quantitative analysis for surface electromyography (SEMG), for the differential diagnosis of pediatric neuromuscular disorders.BACKGROUND: Needle electromyography is invaluable for diagnosis of pediatric neuromuscular disorders, although the procedure is too painful. We previously developed the CI method, which showed good discrimination between neurogenic disorders and myopathies in adults.DESIGN/METHODS: Subjects were 39 children with neuromuscular disorders (15 neurogenic and 24 myopathic patients). Their age averaged 8.8±4.1 years (range 1-15 years). Their diagnoses were confirmed by clinical, pathological or genetic tests. SEMG was recorded at the tibialis anterior muscle using similar methods as reported in adults. Ankle dorsiflexion was achieved by instruction or by tickling the sole, and the SEMG signals of 1-second length with stable intensity were stored and used as an epoch. Typically, 20 to 50 epochs were collected from each subject.RESULTS: 836 epochs from neurogenic patients and 992 epochs from myopathic patients were analyzed. CI and area for each epoch were calculated using five different window widths. Discriminant analysis for each window width revealed that window width of 10 ms achieved the best discrimination between neurogenic and myopathic signals. Next, we calculated mean of the discriminant function for each subject. Using appropriate cut-off values, 7 from 15 neurogenic and 14 from 24 myopathic patients were correctly diagnosed as neurogenic or myopathic with 100[percnt] specificity. Especially, 4 out of 7 spinal muscular atrophy patients and 9 out of 12 Duchenne muscular dystrophy patients were correctly diagnosed.CONCLUSIONS: The CI method is a non-invasive and promising tool for differential diagnosis between neurogenic and myopathic conditions in children.Study Supported by: Grant-in-Aid for Young Scientists, The Ministry of Education, Culture, Sports, Science and Technology,JAPAN Disclosure: Dr. Higashihara has nothing to disclose. Dr. Sonoo has nothing to disclose. Dr. Ishiyama has nothing to disclose. Dr. Nagashima has nothing to disclose. Dr. Uesugi has nothing to disclose. Dr. Mori-Yoshimura has nothing to disclose. Dr. Murata has nothing to disclose. Dr. Murayama has nothing to disclose. Dr. Komaki has nothing to disclose." @default.
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- W2205393058 date "2015-04-06" @default.
- W2205393058 modified "2023-10-03" @default.
- W2205393058 title "Quantitative Analysis of Surface Electromyography for Pediatric Neuromuscular Disorders (P6.269)" @default.
- W2205393058 hasPublicationYear "2015" @default.
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