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  • Title: The effect of cholinesterase inhibitors of SFEMG in myasthenia gravis.
    Author: Massey JM, Sanders DB, Howard JF.
    Journal: Muscle Nerve; 1989 Feb; 12(2):154-5. PubMed ID: 2540433.
    Abstract:
    We report four patients with myasthenia gravis (MG) in whom single-fiber electromyography (SFEMG) jitter measurements were normal in some muslces while they were taking pyridostigmine and became abnormal 2-14 days after the medication was discontinued. When the abnormality of neuromuscular transmission in MG is mild, cholinesterase inhibitors may mask the findings of increased jitter on SFEMG.
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