Study of Immunity Dysfunction Induced by Extracorporeal Assistance (ECMO / ECLS)

• Patient older than 18 years old
• Patient hospitalized in an intensive care unit
• Patient whose initial ARDS or Cardiogenic shock began less than 5 days before admission
• Patients hospitalized for ARDS or Cardiogenic shock with ECMO / ECLS or - Patients hospitalized for ARDS or Cardiogenic shock without ECMO / ECLS

Exclusion Criteria:

• Opposition of patient, relative or legal representative for participation in the study
• Pregnant woman
• Pre-immunodepression
• Implementation of immunosuppressive therapy such as chemotherapy, cyclophosphamide, high-dose corticosteroids (> 0.5mg / kg / day).