Evaluation of Non-opioid Balanced General Anesthesia in Cardiac Surgery With Extracorporeal Circulation: a Randomized, Controlled, Multicenter Superiority Trial

Opioid-free anesthesia (OFA) is a general anesthesia based on the use of hypnotics and non-opioid analgesics (lidocaine, ketamine, dexamethasone, esmolol). This technique has been used for the past 10 years, during which randomized and non-randomized studies have demonstrated a number of positive effects on cardiac function: * better analgesia and decreased postoperative morphine consumption, * better respiratory function, * better hemodynamic stability, * better postoperative cognitive function. The hypothesis of the present study is that the use of OFA during cardiac surgery is associated with: * Improved intraoperative hemodynamic stability * A decrease in the incidence of postoperative complications * A reduction in intensive care and hospital length of stay