Effects of Blood Pulsatility on Von Willebrand Factor During ECCO2R

The primary objective of the study is to demonstrate that the ECCO2R pulsatile configuration prevents the Willebrand factor high molecular weight multimers decrease observed under continuous blood flow configurations. The secondary objectives are to quantify the CO2 extracorporeal removal in the pulsatile configuration, to describe complications (hemorrhagic, thrombotic and hemolytic), to describe patients' gas exchanges under ECCO2R, to describe the clinical course of the patients under ECCO2R as well as during the whole stay in the Intensive Care Unit (ICU).