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Randomized Controlled Trial
. 2021 Feb;35(1):27-34.
doi: 10.1007/s00540-020-02855-y. Epub 2020 Sep 11.

Erector spinae plane block versus retrolaminar block for postoperative analgesia after breast surgery: a randomized controlled trial

Sayaka Sotome  1 , Atsushi Sawada  2 , Asaka Wada  3 , Hiroaki Shima  3 , Goro Kutomi  3 , Michiaki Yamakage  1
Affiliations
Randomized Controlled Trial

Erector spinae plane block versus retrolaminar block for postoperative analgesia after breast surgery: a randomized controlled trial

Sayaka Sotome et al. J Anesth. 2021 Feb.

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.

Keywords: Breast surgery; Erector spinae plane block; Intercostal nerve; Retrolaminar block.

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