About this trial
This randomized, blinded, controlled clinical trial aims to evaluate the effectiveness of ultrasound-guided retrolaminar block in reducing postoperative opioid consumption in patients undergoing lumbar spine fusion surgery under multimodal analgesia.
The participants will:
* Be randomly assigned in a 1:1 ratio to receive either a retrolaminar block with 0.25% bupivacaine plus epinephrine or a sham block (normal saline) prior to surgical incision. * Receive standardized multimodal analgesia. * Have follow-up by the Acute Pain Unit during the first 3 days, to assess opioid consumption (morphine) in 24 hours, pain intensity measured by Numeric Rating Scale, quality of recovery assessed by the QoR-15 questionnaire, intraoperative blood loss, and postoperative complications.
Eligibility criteria
Qualifiers
Adults aged 18-75 years, scheduled for lumbar spine fusion surgery by a trauma team
American Society of Anesthesiologists (ASA) Classification I-III
Willing and able to provide written informed consent to participate in the study.
Disqualifiers
History of chronic use of strong or weak opioids for more than 3 months.
Diagnosis of chronic pain and treatment by a pain management team.
ASA score greater than or equal to 4.
Patients with prior lumbar spine surgery. Spinal instrumentation at the surgical site.
Trial design
Treatments tested in this trial
- retrolaminar block
- Sham block