Noninvasive Ventilation in Myasthenia Gravis.

Area of Science:

• Neurology
• Critical Care Medicine
• Respiratory Medicine

Background:

• Myasthenic crisis (MC) management often involves invasive ventilation (IV), leading to prolonged intubation and respiratory complications.
• Identifying alternatives to IV is crucial for improving patient outcomes in myasthenia gravis (MG).

Purpose of the Study:

• To characterize patients suitable for noninvasive ventilation (NIV) in myasthenia gravis.
• To identify predictors for successful NIV use in myasthenic crisis.

Main Methods:

• A retrospective study was conducted in India from 2013-2015, evaluating MG patients diagnosed via clinical, electrophysiological, and serological methods.
• Patients were intubated based on arterial blood gas criteria; NIV success was defined by avoiding mechanical ventilation (MV) during or shortly after treatment.

Main Results:

• Out of 68 MG patients, 23 experienced MC, with 16 receiving NIV and 16 IV.
• Predictors for crisis included infection, bulbar weakness, high MGFA score, and prior crisis history.
• NIV prevented intubation in 7 patients and reintubation in 3, with 9 NIV failures; no significant differences were found between NIV success and failure groups.

Conclusions:

• Noninvasive ventilation successfully prevented intubation in 7 patients and reintubation in 3.
• NIV demonstrates a lower incidence of complications compared to invasive ventilation.
• NIV is a viable option for patients with impending myasthenic crisis.