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  • Title: The efficacy of pericapsular nerve group block for reducing pain and opioid consumption after total hip arthroplasty: a systematic review and meta-analysis.
    Author: She C, Liu H.
    Journal: J Orthop Surg Res; 2024 Apr 08; 19(1):229. PubMed ID: 38584259.
    Abstract:
    BACKGROUND: Pericapsular nerve group block (PENG) is an emerging regional anesthesia technique for hip surgery. However, its efficacy in total hip arthroplasty (THA) isn't well defined. We perform this meta-analysis aiming to assess the effect of Pericapsular nerve group block on pain control and morphine consumption in patients with total hip arthroplasty. METHODS: We searched four electronic databases (Pubmed, Embase, Cochrane Library, and Web of Science dated from 2018 to October 2023) for published eligible randomized controlled trials (RCTs) comparing PENG with placebo (no block/sham block) after THA. The outcome measurements consisted of pain score, opioid consumption, Time to first opioid, and postoperative complications. All data analyses were performed using STATA 12.0. RESULTS: Five RCTs comprising 808 participants were included. Our meta-analysis showed that there were significant differences between two groups in terms of pain score in PACU (WMD =  - 0.598, 95% CI [- 0.886, - 0.310], P < 0.001), pain score at 6 h (WMD =  - 0.614, 95% CI [- 0.835, - 0.392], P < 0.001) and time to first opioid (WMD = 5.214, 95% CI [4.545, 5.883], P < 0.001). However, no significant differences were revealed from the pain score at 24 h after THA (WMD =  - 0.924, 95% CI [- 1.929, 0.081], P = 0.072). Meanwhile, the meta-analysis indicated that PENG significantly reduced 24-h opioid consumption (WMD =  - 6.168, 95% CI [- 6.667, - 5.668], P < 0.001) and 48-h opioid consumption (WMD =  - 7.171, 95% CI [- 8.994, - 5.348], P < 0.001). CONCLUSION: Pericapsular nerve group block was effective for pain control up to postoperative 6 h and extending the time to the first opioid after THA. Moreover, it reduced postoperative opioid consumption when compared with a placebo group. Due to the high heterogeneity of the pain score after 24 h and the low-quality evidence, more high-quality RCTs are required to draw a definitive conclusion about pain control.
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