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Protective intraoperative ventilation with higher versus lower levels of positive end-expiratory pressure in obese patients (PROBESE): Study protocol for a randomized controlled trial

  • PROBESE investigators, and the PROtective VEntilation Network (PROVEnet) and on behalf of the Clinical Trial Network of the European Society of Anaesthesiology (ESA)
  • University Hospital Carl Gustav Carus
  • Semmelweis University
  • Hospital Universitari Germans Trias i Pujol
  • Medical University Vienna
  • University of Foggia
  • Ghent University Hospital
  • University Hospital Basel
  • Department of Biopathology and Medical Biotechnologies
  • University Hospital Uppsala
  • University of Amsterdam
  • Saint Eloi University Hospital
  • St. Michael's Hospital, Toronto
  • University of Toronto
  • University of Toronto Faculty of Medicine
  • Zaporozhye State Medical University
  • Geneva University Hospitals
  • University of Insubria
  • Tel Aviv University
  • Ponderas Hospital
  • Faculty of Medicine of the TU Dresden
  • Sheffield Teaching Hospitals NHS Foundation Trust
  • Lutsk Clinical Hospital
  • Clinical Hospital Dubrava
  • University of Bonn
  • University Hospital Aachen
  • University of Istanbul
  • Hospital Israelita Albert Einstein
  • Faculdade de Medicina do ABC
  • Fatih Sultan Mehmet Educational and Research Hospital
  • Mayo Clinic
  • Montefiore Medical Center
  • Massachusetts General Hospital
  • University of Leipzig
  • IRCCS for Oncology and Neurosciences
  • Universitätsklinikum Düsseldorf
  • Medical Center of the Johannes Gutenberg University
  • University Clinic Knappschaftskrankenhaus Bochum
  • Ruprecht-Karls-University Heidelberg
  • University Clinic of Surgery St. Naum Ohridski
  • Marienhospital Wesel
  • University Hospital Bonn
  • Centro Hospitalar e Universitário do Porto
  • Centro Hospitalar Entre o Douro e Vouga
  • São João University Hospital Centre
  • Hospital Pedro Hispano de Matosinhos
  • Mayo Clinic in Jacksonville, Florida
  • Mayo Clinic Scottsdale-Phoenix, Arizona
  • University of Colorado Anschutz Medical Campus
  • Tufts Medical Center
  • University of Mississippi
  • University of Chicago
  • Pontificia Universidad Católica de Chile
  • Leiden University Medical Center
  • Department of Anesthesiology
  • VU University Medical Center
  • Onze Lieve Vrouwe Gasthuis
  • Hospital Clinico Universitario de Valencia
  • Consorcio Hospital General Universitario de Valencia
  • La Paz University Hospital
  • Hospital Universitari Mútua de Terrassa
  • Hospital Clínic
  • King Abdullah Medical City
  • Assiut University
  • Mansoura Faculty of Medicine
  • Alexandra Hospital
  • King Abdul-Aziz Cardiac Center
  • Dokuz Eylül University
  • Marmara University School of Medicine
  • Akdeniz University Hospital
  • Azienda Ospedaliera Universitaria di Ferrara
  • Second University of Naples
  • Ospedale U. Parini
  • Kantonsspital Frauenfeld
  • University Hospital “Sveti Duh” Zagreb
  • UH Antwerpen
  • KU Leuven– University Hospital Leuven
  • AZ Sint Jan Brugge
  • Clinique Universitaires de Saint-Luc
  • St James's Hospital
  • University Hospital of Ostrava
  • Tel Aviv Medical Center
  • Barlicki University Hospital
  • North Staffs Hospital NHS Trust
  • Ashford and St Peter Hospitals NHS Trust
  • Royal Cornwall Hospital
  • Hull University Teaching Hospitals NHS Trust
  • Imperial College Healthcare NHS Trust
  • Brighton and Sussex University Hospitals
  • York Teaching Hospital
  • Homerton University Hospitals NHS Foundation Trust
  • Southmead Hospital NHS Foundation Trust

Research output: Contribution to a Journal (Peer & Non Peer)Articlepeer-review

50 Citations (Scopus)

Abstract

Background: Postoperative pulmonary complications (PPCs) increase the morbidity and mortality of surgery in obese patients. High levels of positive end-expiratory pressure (PEEP) with lung recruitment maneuvers may improve intraoperative respiratory function, but they can also compromise hemodynamics, and the effects on PPCs are uncertain. We hypothesized that intraoperative mechanical ventilation using high PEEP with periodic recruitment maneuvers, as compared with low PEEP without recruitment maneuvers, prevents PPCs in obese patients. Methods/design: The PRotective Ventilation with Higher versus Lower PEEP during General Anesthesia for Surgery in OBESE Patients (PROBESE) study is a multicenter, two-arm, international randomized controlled trial. In total, 2013 obese patients with body mass index ≥35 kg/m2 scheduled for at least 2 h of surgery under general anesthesia and at intermediate to high risk for PPCs will be included. Patients are ventilated intraoperatively with a low tidal volume of 7 ml/kg (predicted body weight) and randomly assigned to PEEP of 12 cmH2O with lung recruitment maneuvers (high PEEP) or PEEP of 4 cmH2O without recruitment maneuvers (low PEEP). The occurrence of PPCs will be recorded as collapsed composite of single adverse pulmonary events and represents the primary endpoint. Discussion: To our knowledge, the PROBESE trial is the first multicenter, international randomized controlled trial to compare the effects of two different levels of intraoperative PEEP during protective low tidal volume ventilation on PPCs in obese patients. The results of the PROBESE trial will support anesthesiologists in their decision to choose a certain PEEP level during general anesthesia for surgery in obese patients in an attempt to prevent PPCs. Trial registration: ClinicalTrials.gov identifier: NCT02148692. Registered on 23 May 2014; last updated 7 June 2016.

Original languageEnglish
Article number202
JournalTrials
Volume18
Issue number1
DOIs
Publication statusPublished - 28 Apr 2017
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • Mechanical ventilation
  • Obesity
  • Positive end-expiratory pressure
  • Postoperative pulmonary complication
  • Recruitment maneuver

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