Mazzinari et al. BMC Anesthesiology (2021) 21:84 https://doi.org/10.1186/s12871-021-01268-y RESEARCH ARTICLE Open Access The Association of Intraoperative driving pressure with postoperative pulmonary complications in open versus closed abdominal surgery patients – a posthoc propensity score–weighted cohort analysis of the LAS VEGAS study Guido Mazzinari1,2*, Ary Serpa Neto3,4,5, Sabrine N. T. Hemmes5, Goran Hedenstierna6, Samir Jaber7, Michael Hiesmayr8, Markus W. Hollmann5, Gary H. Mills9, Marcos F. Vidal Melo10, Rupert M. Pearse11, Christian Putensen12, Werner Schmid8, Paolo Severgnini13, Hermann Wrigge14, Oscar Diaz Cambronero1,2, Lorenzo Ball15,16, Marcelo Gama de Abreu17, Paolo Pelosi15,16, Marcus J. Schultz5,18,19, for the LAS VEGAS study– investigators, the PROtective VEntilation NETwork and the Clinical Trial Network of the European Society of Anaesthesiology Abstract Background: It is uncertain whether the association of the intraoperative driving pressure (ΔP) with postoperative pulmonary complications (PPCs) depends on the surgical approach during abdominal surgery. Our primary objective was to determine and compare the association of time–weighted average ΔP(ΔPTW) with PPCs. We also tested the association of ΔPTW with intraoperative adverse events. Methods: Posthoc retrospective propensity score–weighted cohort analysis of patients undergoing open or closed abdominal surgery in the ‘Local ASsessment of Ventilatory management during General Anaesthesia for Surgery’ (LAS VEGAS) study, that included patients in 146 hospitals across 29 countries. The primary endpoint was a composite of PPCs. The secondary endpoint was a composite of intraoperative adverse events. (Continued on next page) * Correspondence:
[email protected] 1Research Group in Perioperative Medicine, Hospital Universitario y Politécnico la Fe, Avinguda de Fernando Abril Martorell 106, 46026 Valencia, Spain 2Department of Anesthesiology, Hospital Universitario y Politécnico la Fe, Valencia, Spain Full list of author information is available at the end of the article © The Author(s).