A randomised comparison of the efficacy of a Coopdech bronchial blocker and a double-lumen endotracheal tube for minimally invasive esophagectomy

Background: Both a bronchial blocker (BB) and a double-lumen endotracheal tube (DLT) can achieve lung collapse and one-lung ventilation (OLV) during thoracic surgery. The purpose of this study was to compare these two airway devices in terms of efficacy in video-assisted thoraco-laparoscopic esophagectomy for cancer. Methods: A total of 55 patients underwent combined thoracoscopic and laparoscopic esophagectomy for cancer were enrolled and divided into a Coopdech bronchial blocker group (CBB group, n=27) or a DLT group (DLT group, n=28). The primary outcome was the lung collapse scores at 1, 5, 10 minutes after the opening of the pleural and assessed using a verbal analogue scale via a real-time video view. Secondary outcomes including time for tube localization, incidence of tube displacement, postoperative sore throats, and surgeons' satisfaction with surgical manipulations were collected. Results: The patients in the CBB group achieved better lung collapse scores at 5 minutes (7.4 +/- 1.3 vs. 6.4=0.9 minutes, P<0.01) and 10 minutes (8.9=0.8 vs. 7.1 +/- 0.9 minutes, P<0.01) after opening the pleura, and they had lower incidence of postoperative sore throats [5 (18%) vs. 16 (57%), P<0.01.1 when compared with patients in DLT group. However, the time for tube localization were significantly longer in CBB group than in DLT group (210 +/- 120 vs. 125 +/- 60 s, P<0.05). There were no significant difference in tube displacement, hypoxemia (Sp02 <90%) during OLV, and in surgeons' satisfaction with surgical manipulations. Conclusions: CBB technique can be a potential alternative to the conventional DLT strategy for lung collapse and OLV during esophagectomy.