The application of endobronchial blocker in video-assisted thoracoscopy surgery

Objective To evaluate the effects of endobronchial blocker (EBB) in video-assisted thoracoscopy surgery (VATS).Methods 100 patients undergoing VATS were randomly divided into 2 groups (n=50):EBB group (group E) and double-lumen tube (DLT)group (group D).The intubation and positioning time,pulmonary collapse time,the frequence of DLT or bronchial blockage's shifting,effects of one-lung ventilation (OLV),airway pressure and impairments of lower respiratory tract were recorded.Results There were no significant differences in positioning time and effects of OLV between the two groups (P＞0.05).There were significant differences in the time of pulmonary collapse between group E and D,respectively (8.5±3.5) and (4.5±2.9) min,P＜0.05.The frequency of tube cuff shifting in group E was significantly higher than that in group D,respectively 23 and 5(P＜0.05).However,the airway pressure of OLV in group D was higher than group E,respectively(26±4)and (22±3) cm H2O(1 cm H2O=0.098 kPa)(P＜0.05).The number of moderate to severe damage of lower respiratory tract in group D were higher than those in group E,respectively 25 and 12(P＜0.05).Conclusions Compared with DLT,EBB need longer time of pulmonary collapse and its tube cuff is easy to shift.While EBB can be applied in OLV safely and successfully with less impairments of lower respiratory tract.So using of EBB is a good method of OLV in VATS. Key words: Endobronchial blocker;  Vedio-assisted thoracoscope;  One-lung ventilation