Abstract
Purpose
The newly introduced erector spinae plane block (ESPB) has given anesthesiologists an alternative regional anesthetic technique for thoracic analgesia. Although ESPB and retrolaminar block (RLB) have similar puncture sites, no clinical study comparing ESPB and RLB has been reported. The aim of this study was to compare ESPB and RLB in terms of analgesic efficacy in the context of multimodal analgesia following breast surgery.
Methods
Fifty female patients undergoing breast surgery under general anesthesia were randomly allocated to receive either ultrasound-guided ESPB or RLB with 20 mL of 0.375% levobupivacaine for postoperative analgesia. The primary outcome was analgesic efficacy in terms of time to first postoperative rescue analgesic after the block procedure. The secondary outcomes were consumption of remifentanil during anesthesia, pain intensity at rest for 24 h postoperatively, and occurrence of postoperative nausea and vomiting (PONV).
Results
After excluding five patients, 45 patients (22 and 23 patients in the ESPB and RLB group, respectively) were analyzed. Median time until the first postoperative rescue analgesic after the block procedure in the ESPB group was not significantly longer than that in the RLB group (8.6 [range 2.7–24] vs. 4.8 [3.0–24] h; P = 0.83). There was no significant difference in the consumption of remifentanil during anesthesia, pain intensity at rest for 24 h postoperatively, and occurrence of PONV between the two groups.
Conclusion
ESPB is equivalent, and not superior, to RLB for postoperative analgesia after breast surgery when 20 mL of 0.375% levobupivacaine is injected at the fourth thoracic vertebra.
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Acknowledgements
The authors thank Fukino Satomi for her assistance in perioperative management of the subjects in this study, and the Department of Surgery, Surgical Oncology and Science, Sapporo Medical University School of Medicine, Sapporo, Japan.
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We received only departmental funding for this work.
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All authors contributed to the study conception and design. Data collection and analysis were performed by SS and AS. The first draft of the manuscript was written by AS, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Sotome, S., Sawada, A., Wada, A. et al. Erector spinae plane block versus retrolaminar block for postoperative analgesia after breast surgery: a randomized controlled trial. J Anesth 35, 27–34 (2021). https://doi.org/10.1007/s00540-020-02855-y
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DOI: https://doi.org/10.1007/s00540-020-02855-y