In this study, postoperative myasthenic crisis after transsternal thymectomy in 122 patients with myasthenia gravis was affected by the existence of preoperative bulbar symptoms, history of preoperative myasthenic crisis, preoperative serum level of anti-acetylcholine receptor antibody > 100 nmol/L, and intraoperative blood loss > 1000 mL. Meticulous preoperative and postoperative care should be carried out to prevent postoperative myasthenic crisis in patients with these prognostic factors.

Simultaneous surgery can be conducted with acceptable mortality. The occurrence of bleeding complications and incomplete lymph node dissection, however, indicates combined procedures only in patients requiring simultaneous surgery due to their disease or unable to tolerate a second operation.

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