Abstract
The Myasthenia gravis (MG) is one of the most common diseases that affects the neuromuscular junction. Its prevalence has been reported as 2-7 / 10 000 in the UK, and about 1 / 10,000 american citizens between the ages of 20 and 40, being the most committed women than men at a ratio of 3:2. The manifestations in the respiratory system are generally attributed to the weakness of the diaphr…