• Kuo-Chuan Hung, Ching-Chung Ko, Chih-Wei Hsu, Yu-Li Pang, Jen-Yin Chen, and Cheuk-Kwan Sun.
• Department of Anesthesiology, Chi Mei Medical Center, Tainan City, Taiwan.
• Can J Anaesth. 2022 Oct 1; 69 (10): 128812991288-1299.

PurposeThis systematic review and meta-analysis investigated the impact of peripheral nerve blocks (PNBs) on patient-reported quality of recovery (QoR) following breast cancer surgery.SourceMedline, EMBASE, Cochrane Library, and Google scholar databases were searched for randomized controlled trials (RCTs) comparing the QoR with or without PNBs in patients receiving breast cancer surgery from inception to September 2021. Using a random effects model, the primary outcome was total scores of postoperative QoR scales (i.e., QoR-15 and QoR-40).Principal FindingsEight RCTs (QoR-15, n = 4; QoR-40, n = 4) involving 653 patients published from 2018 to 2021 were included. For the QoR-40 scale, pooled results revealed a significantly higher total score (mean difference [MD], 12.8 [8.2%]; 95% confidence interval [CI], 10.6 to 14.9; I2 = 59%; five RCTs; n = 251) and scores on all subscales, except psychological support, in the PNB group than in controls at 24 hr after surgery. For the QoR-15 scale, pooled results also showed favorable QoR (MD, 7.7 [5.2%]; 95% CI, 4.9 to 10.5; I2 = 75%; four RCTs; n = 402) in the PNB group at 24 hr after surgery. Sensitivity analysis showed no effect on the QoR-40 score and the difference in total QoR-15 score was no longer significant when a single trial was omitted. The use of PNBs was associated with a significantly lower opioid consumption and risk of postoperative nausea and vomiting without significant differences in the pain score between the two groups.ConclusionOur results verified the efficacy of PNBs for enhancing postoperative QoR using two validated patient-reported tools in female patients receiving breast cancer surgery under general anesthesia.Study RegistrationPROSPERO (CRD42021272575); first submitted 9 August 2021.© 2022. Canadian Anesthesiologists' Society.

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