1. What is myasthenia crisis?The name suggests, myasthenic crisis is a sudden increase when the disease caused by improper treatment of respiratory muscle weakness or other serious situation.

2. Myasthenic crisis was the most important factor influencing operative death.

3. To study the clinical and electrophysiological characteristics of carcinomatous Lambert -- Eaton myasthenic syndrome ( LEMS ).

4. Bulbar muscles are often involved the whole body can affect other muscle groups, vulnerable to upper respiratory tract infection and other reasons, induced myasthenic crisis.

5. Postoperative respiratory management should include observations of developing artery blood gas index, the nature of sputum, myasthenic crisis, effective drainage of secretions.

6. Objective To report the clinical features of myasthenia gravis ( MG ) combined with Lambert - Eaton myasthenic syndrome ( LEMS ).

7. Methods and Results: A total of 36 MG patients developed myasthenic crisis after thymectomy were treated with corticosteroids, cholinesterase inhibitor, breathing apparatus, et al.

8. Objective To evaluate the effectiveness of thymectomy for myasthenia gravis(MG)and the relative factors for postoperative myasthenic crisis and the treatment outcome of thymectomy.