Conclusion
Pediatric electrodiagnostic studies are a useful diagnostic tool that aid in the localization of abnormalities within the lower motor neuron, and often providehelp- ful prognostic information.
Electrodiagnostic studies have been less utilized in the diagnosis of many myopathic disorders and anterior horn cell diseases due to the importance of molecular genetic studies and/or muscle biopsy for determination of disease subtypes. However, there remains a use for EMG and nerve conduction studies in many focal and generalized lower motor neuron conditions. For children suspected of having hereditary neuropathies with no family member possessing genetic confirmation, a directed nerve conduction study may guide the acquisition of more specific and less costly molecular genetic studies. In other conditions, such as Guillain-Barre syndrome, or focal neuropathic conditions, electrodiagnostic studies remain critical for diagnostic confirmation.Practical suggestions relating to the pediatric electrodiagnostic evaluation have been provided. Study results must be interpreted in light of developmental and maturational issues affecting both clinical findings and electrophysiological processes. A skilled electrodiagnostic evaluation utilizes careful strategic planning to provide the most important diagnostic information needed in an expeditious manner, with the least distress possible to the child and parent. Ongoing electrodiagnostic experience with the pediatric population provides increasing diagnostic acumen regarding pediatric lower motor neuron disease processes and sufficient technical skills to provide the referring physician with accurate diagnostic information.
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