RESUMO
Video assisted thoracoscopic surgery [VATS] has been successfully used for thymectomy in myasthenia gravis [MG]. Thoracoscopic thymectomy [TT] is usually done under general anesthesia with double lumen tubes [DLT]. The aim of this study is evaluation of two lung ventilation through single lumen tubes [SLT] during TT. In this prospective randomized study, TT was done in 30 patients with MG from January 2004 to December 2007. Patients were randomly intubated with either a DLT or SLT, 15 patients in each group. All patients were evaluated for hemodynamie stability, oxygen saturation of hemoglobin [Spo[2]], end-tidal Pco[2] [ETPco[2]], times required for intubation and surgery, satisfaction of surgeon about exposure and postoperative complications. in the SLT group, all patients had stable hemodynamic, Spo[2] and ETPco[2]. In the DLT group, hemodynamic instability occurred in one, decrease in Spo[2] in one and increase in ETPco[2] in another patient. One patient in DLT group developed vocal cord granuloma two months later. Time required for surgery and surgeon's opinion about exposure were similar in the two groups. SLT is safe in TT. It provides good surgical exposure and decreases the cost, time and undesirable complications of DLT