Influence of Nociception Level Monitor (NOL) Guided Analgesic Delivery on Robot-assisted Colorectal Surgery

Being relatively new, the NOL monitor may offer interesting observations in perioperative nociception levels and appropriate analgesic consumption in diverse surgeries, including robot-assisted surgery. These observations may supplement the current efforts towards further advantages in rapid restitution. Therefore, the investigators planned a trial where intra-operative analgesics were guided using an NOL monitor to study if intra-operative NOL guidance influences peri-operative analgesic consumption, postoperative length of stay and quality of recovery of patients subjected for robot-assisted surgery.

Inclusion Criteria:American Society of Anaesthesiologists score III-IVScheduled for elective major robot-assisted colorectal surgeriesExclusion Criteria:Inability to give informed consentplanned spinal or epidural anaesthesiaall forms of regional anaesthesia, including wound infiltrationnonelective procedurespregnancy or lactationatrial fibrillation