Efficacy of Intraoperative Use of 20% Albumin Combined With Ringer Lactate Versus Ringer Lactate During Cytoreductive Surgery With Hyperthermic Intraperitoneal Chemotherapy

Inclusion Criteria: * Male and female patients aged 18 years old and older * Planned cytoreductive surgery with HIPEC for peritoneal carcinomatosis (from gynaecological or digestive origin) * Patient volunteer for the study and provided written informed consent * Patient affiliated to the French Health Insurance Exclusion Criteria: * Adults \>75 years old * Functional status rendering the patient ineligible for cytoreduction with CHIP (ECOG \> 2 or Karnofsky index \< 75) * Pre-existing preoperative conditions affecting albuminemia (hepatic cirrhosis, nephrotic syndrome, exudative enteropathy, malnutrition) * Severe preoperative hypoalbuminemia (albuminemia \< 20 g/L) * History of chronic left heart failure with reduced left ventricular ejection fraction (left ventricular ejection fraction \< 40%) * Patients at high risk of perioperative and postoperative pulmonary complications (atelectasis, significant pleural effusions) * Significant ascites with preoperative respiratory repercussions * Uncontrolled diabetes (HbA1c \> 8.5%) * Allergy to exogenous human albumin and its excipients. * Contraindication to the administration of Ringer's lactate (history of allergy) * Hyperkalemia \> 6.0 mmol/L * Hypercalcemia (total calcium \> 2.60 mmol/L) * Chronic use of digitalis and hyperkalemic diuretics * Pregnancy, breastfeeding * Known preoperative renal failure (GFR \< 30 mL/min/1.73m2 or extrarenal purification) * Recent brain trauma \< 6 months (traumatic, ischemic, or hemorrhagic) * Participation in another interventional study involving human subjects or being in the exclusion period following a previous study involving human subjects, if applicable * Patient deprived of liberty * Patient under guardianship or curatorship