Evaluation of Regional Ventilation Distribution in Patients Affected by Abdominal Sepsis After Emergent Laparotomy

The goal of this clinical trial is to evaluate regional ventilation distribution in patients admitted to the intensive care unit after emergent laparotomy due to abdominal sepsis. The main question it aims to answer is: • evaluate if patients admitted after an open abdomen strategy have a different regional ventilation distribution compared to patients in which abdomen is closed at the end of the procedure Participants will undergo non-invasive monitoring (esophageal pressure and electrical impedance tomography) and an blood gas analysis samples. Researchers will compare open abdomen group and closed abdomen group to see if the ventilation distribution pattern is different.