Lumbar Erector Spinae Plane Block for Back Surgery

Title: A prospective randomized double blind trial of the efficacy of a bilateral lumbar erector spinae block on the 24 h morphine consumption after posterior lumbar interbody fusion surgery. Objectives: The primary objective is to study the influence of a bilateral erector spinae block on 24h morphine consumption. Endpoint: The primary endpoint is the 24 h morphine consumption in mg. Secondary endpoints are intraoperative sufentanil requirement, total morphine during first 72 postoperative hours, NRS pain scores in rest and defined movement (moving to chair) at regular time intervals and Quality of Recovery 40 score (QoR-40) at fixed time intervals day 1 and 3 postoperatively Population: Patients undergoing posterior lumbar interbody fusion ranging 1 - 3 levels Phase 3 Number of sites Enrolling participants: University Hospital Antwerp \&AZ KLINA Brasschaat Description of study agent: Bilateral erector spinae block: each block contains 20 ml levobupivacaine 0.25% + 5 mcg/ml epinephrine Study duration Until the required study population is met Participant duration 72 hours