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Major spinal surgery causes significant postoperative pain. We tested the efficacy and safety of bilateral erector spinae block on quality of recovery and pain after thoracolumbar decompression. We randomly allocated 60 adults to standard care or erector spinae block. Erector spinae block improved the mean (SD) quality of recovery-15 score at 24 postoperative hours, from 119 (20) to 132 ( 14), an increase (95%CI) of 13 (4-22), p = 0.0044. Median (IQR [range]) comprehensive complication index was 1 (0-3 [0-5]) in the control group vs. 1 (0-1 [0-4]) after block, p = 0.4. Erector spinae block reduced mean (SD) area under the curve pain during the first 24 postoperative hours: at rest, from 78 (49) to 50 (39), p = 0.018; and on sitting, from 125 (51) to 91 (50), p = 0.009. The cumulative mean (SD) oxycodone consumption to 24 h was 27 (18) mg in the control group and 19 (26) mg after block, p = 0.20. In conclusion, erector spinae block improved recovery and reduced pain for 24 h after thoracolumbar decompression surgery.

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Background Spinal surgery can be associated with significant postoperative pain. Erector spinae plane (ESP) block is a new regional anaesthesia technique, which promises effective postoperative analgesia compared with systemically administered opioids, but has never been evaluated in terms of patient-centred outcomes such as quality of recovery and overall morbidity after major thoraco-lumbar spinal surgery. Methods We are conducting a prospective, randomised, double-blind trial in two hospitals in the Republic of Ireland. The sample size will be 50 patients (25 in the intervention group and 25 in the control group). Randomisation will be done using computer-generated concealed envelopes. Both patients and investigators collecting outcome data will be masked to group allocation. Participants will be male or female, aged 18 years and over, capable of providing informed consent and ASA grade I–IV. Patients scheduled to undergo posterior approach thoraco-lumbar decompression surgery involving 2 or more levels will be recruited to the study. Participants randomised to the intervention arm of the study will receive bilateral ultrasound-guided ESP block totalling 40 ml 0.25% levo-bupivcaine (20 ml each side), post induction of general anaesthesia and before surgical incision. The control group will not receive an ESP block. Both groups will receive the same standardised analgesic protocol both intra- and postoperatively. The primary outcome will be the quality of recovery at 24 h postoperatively as determined by the QoR-15 score. This score is determined by a questionnaire which measures patient responses to 15 subjective parameters, each response graded on a scale from 0 to 10. The maximum score achievable is 150 with a potential minimum score of 0. Higher scores indicate a higher quality of recovery experience. Secondary outcomes will include area under the curve (AUC) of VRS pain versus time at rest and on movement up to 24 h postoperatively, 24 h opioid consumption, time to first analgesia in recovery, length of stay (LOS), incidence and severity of postoperative complications as measured by the Comprehensive Complication Index (CCI) score. Discussion To the best of our knowledge, this will be the first randomised control trial to examine the efficacy and safety of the ESP block in terms of patient-centred outcomes in the setting of major spinal surgery. The QoR-15 is a validated means of assessing the quality of recovery after surgery and gives a more holistic assessment of the recovery experience from the patient’s point of view. Trial registration This trial is pre-registered on ClinicalTrials.gov reference number NCT04370951. Registered on 30 April 2020. All items from the World Health Organisation Trial Registration Data Set have been included.

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