Dan Huang1, Shujing Zhou1, Zhangjie Yu2, Jie Chen3, Hong Xie4. 1. Department of Anesthesiology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China.; Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China. 2. Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China. 3. Department of Anesthesiology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China.. Electronic address: 13611906592@163.com. 4. Department of Anesthesiology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China.. Electronic address: hongx93044@126.com.
Abstract
STUDY OBJECTIVE: To evaluate the effects of ventilation with low tidal volume and positive end-expiratory pressure (PEEP) on postoperative pulmonary complications in patients undergoingrobot-assisted laparoscopic radical cystectomy (RARC) for bladder cancer. DESIGN: A prospective randomized double-blinded study. SETTING:A single center trial in a comprehensive tertiary hospital from January 2017 to January 2019. PATIENTS: A total of 258 patients undergoing RARC for bladder cancer. INTERVENTIONS: Patients were randomly assigned to receive either lung-protective ventilation (LPV group) [tidal volume 6 ml/ kg predicated body weight (PBW) + PEEP 7 cmH2O] or nonprotective ventilation (control group) (tidal volume 9 ml/ kg PBW without PEEP) during anesthesia. MEASUREMENTS: The primary outcome was the occurrence of postoperative pulmonary complications (PPCs) during the first 90 days after surgery. The secondary outcomes were extubation time, oxygenation index (OI) after extubation and at postoperative day 1 in blood gas. MAIN RESULTS: The incidence of PPCs at postoperative day1, 2 and 3 were lower in LPV group [26.8% vs. 47.2%, odds ratio (OR) 0.41, 95% confidence interval (CI), 0.24-0.69, P = 0.0007, 21.3% vs. 43.3%, OR 0.36, 95% CI, 0.20-0.61, P = 0.0002, 14.2% vs. 27.5%, OR0.43, 95%CI, 0.23-0.82, P = 0.0087, respectively], while no differences were observed at day 7 and 28 (3.9% vs. 9.4%, P = 0.0788, 0% vs. 1.6%, P = 0.4980, respectively). No PPCs were observed at postoperative day 90 in both groups. Furthermore, immediately after extubating and at postoperative day 1, OI was significantly higher in LPV group compared with control group [390(337-467) vs. 343(303-420), P = 0.0005, 406.7(73.0) vs. 425.5(74.7), P = 0.0440, respectively]. Patients in LPV group had a significant shorter extubation time after operation compared with control group [38(33-54) vs. 35(25-46), P = 0.0012]. CONCLUSION:LPV combining low tidal volume and PEEP during anesthesia for RARC may decrease the incidence of postoperative pulmonary complications.
RCT Entities:
STUDY OBJECTIVE: To evaluate the effects of ventilation with low tidal volume and positive end-expiratory pressure (PEEP) on postoperative pulmonary complications in patients undergoing robot-assisted laparoscopic radical cystectomy (RARC) for bladder cancer. DESIGN: A prospective randomized double-blinded study. SETTING: A single center trial in a comprehensive tertiary hospital from January 2017 to January 2019. PATIENTS: A total of 258 patients undergoing RARC for bladder cancer. INTERVENTIONS:Patients were randomly assigned to receive either lung-protective ventilation (LPV group) [tidal volume 6 ml/ kg predicated body weight (PBW) + PEEP 7 cmH2O] or nonprotective ventilation (control group) (tidal volume 9 ml/ kg PBW without PEEP) during anesthesia. MEASUREMENTS: The primary outcome was the occurrence of postoperative pulmonary complications (PPCs) during the first 90 days after surgery. The secondary outcomes were extubation time, oxygenation index (OI) after extubation and at postoperative day 1 in blood gas. MAIN RESULTS: The incidence of PPCs at postoperative day1, 2 and 3 were lower in LPV group [26.8% vs. 47.2%, odds ratio (OR) 0.41, 95% confidence interval (CI), 0.24-0.69, P = 0.0007, 21.3% vs. 43.3%, OR 0.36, 95% CI, 0.20-0.61, P = 0.0002, 14.2% vs. 27.5%, OR0.43, 95%CI, 0.23-0.82, P = 0.0087, respectively], while no differences were observed at day 7 and 28 (3.9% vs. 9.4%, P = 0.0788, 0% vs. 1.6%, P = 0.4980, respectively). No PPCs were observed at postoperative day 90 in both groups. Furthermore, immediately after extubating and at postoperative day 1, OI was significantly higher in LPV group compared with control group [390(337-467) vs. 343(303-420), P = 0.0005, 406.7(73.0) vs. 425.5(74.7), P = 0.0440, respectively]. Patients in LPV group had a significant shorter extubation time after operation compared with control group [38(33-54) vs. 35(25-46), P = 0.0012]. CONCLUSION:LPV combining low tidal volume and PEEP during anesthesia for RARC may decrease the incidence of postoperative pulmonary complications.