Erector Spinae Plan Block (ESPB) with Dexmedetomidine and Dexamethasone in Lumbar Spine Fusion

Lumbar Degenerative Disease

analgesia, ESPB, erector spinae plane block, dexmedetomidine, dexamethasone, bupivacaine, randomized, blinded, postoperative, opioid, PONV, nausea, vomitting, fusion

This study wants to understand if using a pre-operative anesthetic injection could contribute to better pain relief after the surgery. This injection is referred to as an erector spinae plane block (ESPB, or Block for short). In the past, blocks have been commonly used to alleviate different types of pain, including pain following lumbar spine surgery, but our investigators are curious to study if adding two additional commonly used drugs could improve pain relief following surgery when used together. This possibility for improvement in pain management is important for our doctors to study because they want to find ways to reduce the amount of pain medication required after surgery. We try to assess if one treatment is better than the other by looking into the amount of pain medication used immediately after the surgery (up to five times within the first 2 days; this is usually done by reviewing progress notes) and by asking patients if they can share with us their pain experienced at different times during their stay at the hospital and at 2-weeks after their procedure.

Regional anesthetic techniques, including interfascial plane blocks, have demonstrated success in postoperative pain control and improved patient satisfaction. Erector spinae plane blocks (ESPB) are a relatively new regional anesthetic modality, which have shown potential for perioperative pain control in lumbar spinal surgery. This study aims to investigate whether adding dexmedetomidine and dexamethasone as adjuncts to bupivacaine in ESPB improves analgesia and reduces opioid usage in lumbar spinal fusion patients receiving multimodal pain regimens. It will also assess the impact of these adjuncts on postoperative nausea and vomiting (PONV) and anti-emetic medication requirements. The study employs a randomized, double-blind design, with participants divided into two groups: ESPB without adjuvants (Group A) and ESPB with dexmedetomidine and dexamethasone (Group B). Primary outcomes include opioid consumption at 24 hours postoperatively, while secondary outcomes involve opioid consumption at various time points and visual analog scale (VAS) pain scores. The results of this investigation will provide valuable insights into the efficacy of ESPB with adjuncts in postoperative pain management in lumbar spinal fusion patients.

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