Quadro-Iliac Plane Block for Analgesia After Lumbar Microdiscectomy

Condition(s) studied

Investigational drug(s) / intervention(s)

Ultrasound-Guided Quadro-Iliac Plane Block: Bilateral ultrasound-guided quadro-iliac plane block will be performed before emergence from general anesthesia in the prone position. After visualization of the quadratus lumborum muscle and iliac crest at the L3 level, 30 mL of 0.167% bupivacaine will be injected into the interfascial plane on each side. All participants will receive postoperative fentanyl-based patient-controlled analgesia.

Local Infiltration Analgesia (LIA): Local infiltration analgesia will be performed by the surgeon before the end of surgery. A total dose of 50 mg of 0.25% bupivacaine will be infiltrated into the subcutaneous tissue. All participants will receive postoperative fentanyl-based patient-controlled analgesia.

Study summary

This study will evaluate whether ultrasound-guided quadro-iliac plane block provides better postoperative pain control than local infiltration analgesia in patients undergoing single-level lumbar microdiscectomy.

Adult patients scheduled for elective single-level lumbar microdiscectomy will be randomly assigned to receive either bilateral quadro-iliac plane block plus patient-controlled analgesia or local infiltration analgesia plus patient-controlled analgesia. The main outcome of the study will be total fentanyl consumption during the first 24 hours after surgery. Pain scores, need for rescue analgesia, opioid-related side effects, patient satisfaction, and recovery quality will also be evaluated.

Eligibility

Primary outcome measure(s)

• Total Fentanyl Consumption During the First 24 Hours After Surgery — Postoperative 0-24 hours
  Total postoperative fentanyl consumption administered via patient-controlled analgesia will be recorded during the first 24 hours after surgery.

Trial sites (1)

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