Evaluation of the HPA Axis in Patients With Vasoplegic Syndrome After Cardiac Surgery

Blood samples of 5 mL are taken at 4 stages of the study. Samples are taken from an arterial catheter inserted as part of the treatment, for a total volume of 20 mL maximum for the study.

Patients will be followed until their discharge from intensive care, or at most until D28, and their vital status will be collected at the end of their participation in the study.