Analgesic Efficacy of Quadaratus Lumborum Block (QLB) for Laparoscopic Colectomy Surgery: A Prospective Case Control Trial to Evaluate Clinical Outcomes

Patients undergoing primary laparoscopic colectomy patients under general anesthesia with an additional Quadratus lumborum block (QLB ) will be asked to fill out a questionnaires detailing: numeric verbal analogue scores (VAS) and quality of recovery score(QoR) preoperatively, 24 hours, 48 hour and four weeks after surgery. Additional data will be collected: ASA physical status, demographics, intra- and post operative opiate(expressed as morphine equivalent in mg/kg) and non opiate consumption in order to assess the analgesic efficacy of QLB for primary laparoscopic colectomy. QLB will be performed as per standard routine regimens, in the operating room after induction of general anesthesia and prior to surgery.