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Which patients are most likely to have a positive RNS test for myasthenia gravis?

Key clinical point: Seropositivity, Myasthenia Gravis Foundation of America (MGFA) Class III or higher, and inpatient testing are associated with positive repetitive nerve stimulation findings for myasthenia gravis.

Major finding: Of 65 patients, 32 were in MGFA Class I, 14 were in MGFA Class IIa, 13 were in MGFA Class IIb, and 6 were in MGFA Classes IIIa through V.

Study details: A retrospective review of 65 patients with suspected myasthenia gravis.

Disclosures: The study was supported by a Missouri School of Medicine Summer Research Fellowship.


Hua T et al. AANEM 2019, Abstract 9.