Effects of 12 and 17 cmH2O positive end-expiratory pressure applied after alveolar recruitment maneuver on pulmonary gas exchange and compliance in isoflurane-anesthetized horses

2019 ◽  
Vol 46 (1) ◽  
pp. 64-73 ◽  
Author(s):  
Felipe SRM. Andrade ◽  
Lara L. Facó ◽  
Keila K. Ida ◽  
Luis CLC. Silva ◽  
Denise T. Fantoni ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Recruitment Maneuver ◽  
Pulmonary Gas Exchange ◽  
Alveolar Recruitment ◽  
Positive End Expiratory Pressure ◽  
Alveolar Recruitment Maneuver

scholarly journals Comparison of Positive End-Expiratory Pressure versus Tidal Volume-Induced Ventilator-Driven Alveolar Recruitment Maneuver in Robotic Prostatectomy: A Randomized Controlled Study

2021 ◽  
Vol 10 (17) ◽  
pp. 3921
Author(s):  
Kangha Jung ◽  
Sojin Kim ◽  
Byung Jun Kim ◽  
MiHye Park
Keyword(s):  
Laparoscopic Surgery ◽  
Tidal Volume ◽  
Supine Position ◽  
Recruitment Maneuver ◽  
Lung Compliance ◽  
Robotic Prostatectomy ◽  
Alveolar Recruitment ◽  
Driving Pressure ◽  
Positive End Expiratory Pressure ◽  
Alveolar Recruitment Maneuver

Background: We evaluated the pulmonary effects of two ventilator-driven alveolar recruitment maneuver (ARM) methods during laparoscopic surgery. Methods: Sixty-four patients undergoing robotic prostatectomy were randomized into two groups: incrementally increasing positive end-expiratory pressure in a stepwise manner (PEEP group) versus tidal volume (VT group). We performed each ARM after induction of anesthesia in the supine position (T1), after pneumoperitoneum in the Trendelenburg position (T2), and after peritoneum desufflation in the supine position (T3). The primary outcome was change in end-expiratory lung impedance (EELI) before and 5 min after ARM at T3, measured by electrical impedance tomography. Results: The PEEP group showed significantly higher increasing EELI 5 min after ARM than the VT group at T1 and T3 (median [IQR] 460 [180,800] vs. 200 [80,315], p = 0.002 and 280 [170,420] vs. 95 [55,175], p = 0.004, respectively; PEEP group vs. VT group). The PEEP group showed significantly higher lung compliance and lower driving pressure at T1 and T3. However, there was no significant difference in EELI change, lung compliance, or driving pressure after ARM at T2. Conclusions: The ventilator-driven ARM by the increasing PEEP method led to greater improvements in lung compliance at the end of laparoscopic surgery than the increasing VT method.

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