Study of the Combined Influence of Sepsis and Mechanical Ventilation on the Human Diaphragm

Inclusion Criteria

• •Patient at least 18 years of age, male or female requiring abdominal or thoracic surgery or multi-organ sampling;
• •Affiliated to a social security or similar system;
• •Not subject to legal protection;
• •Having given consent to participate in the study (or consent from the trusted person)
• •Control group (C): non-septic mesocolic programmed abdominal or thoracic surgery: gastrectomy, esophagectomy, pancreatectomy, hepatectomy
• •Sepsis group (S): Abdominal or thoracic surgery in a septic context (peritonitis, mediastinitis, pleural abscess)
• •Group Mechanical Ventilation (MV): Patient in brain death for which a multi organ sample is planned
• •Mechanical Ventilation + Sepsis (S-MV) group: Patient under controlled mechanical ventilation to undergo abdominal or thoracic surgery in a septic context (peritonitis, mediastinitis, pleural abscess)