Superiority of opioid free anesthesia with regional block over opioid anesthesia with regional block in the quality of recovery after retroperitoneiscopic renal surgery: a randomized controlled trial

Opioids are the main analgesic drugs used in the perioperative period, but they often have various adverse effects. Recent studies have shown that quadratus lumborum block (QLB) has an opioid sparing effect. The aim of this study was to further evaluate the effect of opioid-free anesthesia (OFA) combined with regional block on the quality of recovery in patients undergoing retroperitoneoscopic renal surgery.