Transient neonatal myasthenia gravis: refining risk estimate for infants born to women with myasthenia gravis.

Objective: Transient neonatal myasthenia gravis (TNMG) can render a neonate vulnerable to catastrophic respiratory depression. Our aim was to describe the clinical manifestations of TNMG, and to determine when the myasthenic signs become apparent in TNMG.

Methods: We reviewed our own experience of infants who underwent routine inpatient monitoring for TNMG and combined our local data with observations from previous studies.