Do you know if the surgery is going to be laproscopic? I had a softball sized cyst on my ovary and had the ovary removed laproscopically. It was done in the morning and I went home in the early afternoon. No morphine - just prescription painkillers. Comparing that pain to the pain after my transsternal thymectomy, I could have probably just taken ibuprofen/Tylenol. As for the anasthesia, the medications used are altered for the myasthenia, - such as no muscle relaxers. The anasthesiologist told me what he was going to use and was well aware of which drugs to avoid.