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Repetitive nerve stimulation test in myasthenic crisis
Author(s) -
Oh Shin J.,
Jeong Dushin,
Lee Ikjae,
Alsharabati Mohammad
Publication year - 2019
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.26390
Subject(s) - repetitive nerve stimulation , myasthenia gravis , stimulation , medicine , anesthesia , cholinergic
Herein we report our experience with the repetitive nerve stimulation (RNS) test in myasthenia gravis (MG) crisis. Methods The various parameters of the RNS tests in 26 patients with MG crisis were analyzed. Results In 18 (69%) patients, MG crisis is the first manifestation of MG. RNS tests were abnormal in 24 (92%) patients by decrement at low‐rate stimulation in any of 4 tested muscles. Three patterns of abnormality were found: MG pattern (decrement at low‐rate stimulation) in 23 patients; Lambert–Eaton myasthenic syndrome pattern in 1 patient; and cholinergic crisis pattern in 1 patient. Discussion During MG crisis, the RNS test can serve as a rapid and sensitive diagnostic tool for MG in a majority of patients. Muscle Nerve 59:544–544, 2019