3) Weakness of Respiratory Muscles
There could also be the weakness of the respiratory muscles, but they are rarely present after the onset of symptoms within the course of two years. The presence of weakness of the respiratory muscles is what leads to a myasthenic crisis.
This is an emergency condition, where the patient presents in a state of severe hypoxia. In such cases, mechanical ventilation is vital to revive the patient from a life-threatening situation.




