Eligibility Criteria:
Inclusion Criteria:
* Patient who has given free, written and informed consent
* Patient of legal age.
* Negative pregnancy test for women of childbearing age
* Patient requiring cardiac surgery:
* Scheduled (\> 24h)
* With extracorporeal circulation (ECC)
* Myocardial revascularization (coronary bypass), and/or surgical correction of valvulopathy (aortic, mitral, pulmonary, tricupsidian), and/or of the ascending aorta and/or removal of an intracardiac tumor, and/or closure of a PFO/ASD
* Patient with at least 3 risk factors for acute kidney failure including:
* age \> 70 years, combined surgery (more than two procedures), common trunk lesion, preoperative anemia, chronic respiratory failure, obliterative arterial disease of the lower extremities, diabetes, glomerular filtration \< 60 ml min-1 m², LVEF \<40%, redux, intra-aortic counterpulsation balloon, expected duration of bypass surgery \> 100 min, albuminuria
Exclusion Criteria:
* Patient not affiliated to national health insurance or not beneficiary of a social security system,
* Patient subject to a measure of legal protection (curatorship, guardianship),
* Pregnant, parturient or breastfeeding women,
* Patients of legal age who are incapable or unable to express their consent,
* Patients who have already been included in this study
* Patients requiring emergency surgery (less than 24 hours)
* Patient with chronic kidney failure on dialysis,
* Patient with a cardiac transplant,
* Patient on left-sided monoventricular assistance,
* Patient on ECMO/ECLS,
* Patient with acute circulatory failure in the immediate preoperative period (sepsis, hemorrhage),
* Patients with known hypersensitivity to the active ingredient (argipressin) or to one of the excipients of REVERPLEGĀ®.
Secondary exclusion criteria:
* Patient not developing persistent arterial hypotension (vasoplegic syndrome), within 12 hours after completion of surgery, defined as persistent mean arterial pressure (MAP) \<65 mmHg despite correction of preload and inotropism, with a cardiac index \>2.2 l min-1 m-2, and not responding to 30 mg cumulative of ephedrine in bolus
* Patient with hemorrhagic shock perioperatively before receiving vasopressor therapy (treatment under study)