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  • Title: Single fiber electromyography (SFEMG) in mitochondrial diseases (MD).
    Author: Cruz-Martínez A, Arpa J, Santiago S, Pérez-Conde C, Gutiérrez-Molina M, Campos Y.
    Journal: Electromyogr Clin Neurophysiol; 2004; 44(1):35-8. PubMed ID: 15008023.
    Abstract:
    Conventional EMG, nerve conduction studies and SFEMG were performed in 18 patients with various phenotypes of MD. 14 cases showed findings consistent with mild myopathy, 2 patients signs of sensory-motor axonal neuropathy and 2 cases a mixture of myopathy and axonal neuropathy. Motor unit fiber density was mild increased in 8 out of 13 tested cases. Jitter was abnormal in 10 out of 18 tested patients. Jitter abnormalities were not related to myopathic or neurogenic features in the EMG study, and may be observed in muscles without clinical weakness. The results suggest the existence of neuromuscular transmission disturbances in patients with MD.
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