Intraoperative Protective Ventilation in Abdominal Surgery (IMPROVE Study)
Protective Lung Ventilation Using:
Low Tidal Volume (6-8 mL/kg Predicted Body Weight)
PEEP of 6-8 cmH2O
Other: Abdominal surgery
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
|Official Title:||Intraoperative Lung Protective Ventilation in Abdominal Surgery: A Randomized Controlled Study|
- Composite endpoint defined as incidence of major postoperative pulmonary (defined as pneumonia, need for noninvasive ventilation or need for invasive ventilation) and extrapulmonary (SIRS, sepsis and septic shock) complications [ Time Frame: during the first seven days after surgery ]
- Major complications: postoperative hypoxemia, postoperative pneumonia, acute lung injury (ALI), acute respiratory distress syndrome (ARDS), pulmonary embolism [ Time Frame: at day 15 after surgery ]
- Minor complications : atelectasis, anastomotic leakage, intrabdominal abscess [ Time Frame: at day 15 after surgery ]
- Other postoperative complications (reintervention, wound abscess, ...) [ Time Frame: at day 15 after surgery ]
- Systemic level of marker of inflammation (C Reactive protein) [ Time Frame: at day 15 after surgery ]
- Postoperative complications at day 30 after surgery [ Time Frame: at day 30 after surgery ]
- Need for ICU admission [ Time Frame: at day 30 after surgery ]
- ICU length of stay [ Time Frame: at day 30 after surgery ]
- Hospital length of stay [ Time Frame: at day 30 after surgery ]
- Mortality [ Time Frame: at day 30 after surgery ]
- Plasma levels of the soluble form of the receptor for advanced glycation end-products (sRAGE), a marker of alveolar type I cell injury [ Time Frame: before surgery, during the immediate postoperative period and on day 1, day 3 and day 7 after surgery ]
|Study Start Date:||January 2011|
|Study Completion Date:||August 2012|
|Primary Completion Date:||August 2012 (Final data collection date for primary outcome measure)|
Other: Abdominal surgery
Postoperative complications are associated with a significant and quantifiable rate of both morbidity and mortality, increased length of hospital stay and cost of care. Intra-abdominal surgery, especially upper abdominal surgery, is an important risk factor of both pulmonary and extra-pulmonary complications. Up to 15-20% of patients will develop postoperative respiratory failure which may require respiratory support.
Recent data from both experimental and clinical studies suggested that, compared with conventional ventilation using high tidal volume (TV) without positive end-expiratory pressure (PEEP), intraoperative lung protective ventilation using low tidal volume, PEEP and recruitment maneuvers (RM) could reduce postoperative complications. Conventional ventilation promotes sustained cytokine production and could therefore contribute to development of lung injury with in patients with normal lungs. Conversely, lung protective ventilation was found to reduce pulmonary and systemic inflammation.
The primary objective is to compare a lung protective ventilation with conventional ventilation (high tidal volumes without PEEP) during abdominal surgery: 1- Conventional ventilation with TV of 10-12 mL/kg predicted body weight (PBW) without PEEP; 2- Protective lung ventilation with TV of 6-8 mL/kg PBW, PEEP of 6-8 cmH2O and RM.
Our hypothesis is that lung protective ventilation could reduce postoperative pulmonary and extra-pulmonary complications compared with conventional ventilation.
Please refer to this study by its ClinicalTrials.gov identifier: NCT01282996
|Clermont-Ferrand, France, 63003|