Hello again, WV,

A myasthenic can have acceptable levels but may require some oxygen because the patient appears to be making an effort to take in air in different degrees, either by shortness of breath, or shallow breathing. Maybe your doctor is worried about your oxygen levels during physical therapy, or your neck drop. I'm certain when you ask, he'll tell you why he chose this route, and please let us know.

I don't know if this is what you read about oxygen, but I'll share many neuros' thoughts on this. MGers who are experiencing remarkable trouble with breathing shouldn't be at home on oxygen, lest the lungs shut down--they need to be in the hospital. I am not aware, at this time, of any myasthenic in my region who has oxygen at home, specific only to myasthenia.