I use a cpap for sleep apnea. i have been diagnosed with mg and notice that it is more difficult to breathe with the cpap. is a bipap better for mg?

Difficulty breathing: Based on your question and the difficulty inbreathing i would recommend a device tit ration during a sleep study to truly evaluate the effectiveness of the different types of devices used with cpap.

CPAP v BiPAP: From what i know of sleep apnea, having it myself, bipap machines are generally used more for patients with central sleep apnea which is a neurotransmitter problem in the brain rather than obstructive airway alone. Since mg is a neurtransmitter condition as well and difficulty in breathing is a side effect my opinion would be you would be better served with a bipap.