{
  "abstract": "Introduction Erector spinae plane (ESP) block and local infiltration analgesia (LIA) are widely used to control postoperative pain after abdominal surgery. An increasing number of randomised controlled trials (RCTs) have compared the analgesic effects of ESP block and LIA after abdominal surgery, but the results are inconsistent. This protocol of a systematic review and meta-analysis aims to determine whether the analgesic effects of ESP block are better than those of LIA in abdominal surgeries.Methods and analysis Two authors will independently search PubMed, EMBASE, Web of Science and the Cochrane Library from their inception to 15 August 2025. RCTs that compared the analgesic effects of ESP block with LIA for abdominal surgeries will be included. The primary outcome will be opioid consumption over 24 hours postoperatively. The secondary outcomes will include the time to first rescue analgesia, pain intensity score and incidence of adverse effects. RevMan V.5.4 software will be used for statistical analysis.Ethics and dissemination Ethical approval is not applicable. The results of this study will be publicly published in one peer-reviewed journal.PROSPERO registration number CRD42024598176.",
  "authors": [
    {
      "affiliations": [
        "Department of Anesthesiology, Shenzhen Longgang Second People’s Hospital, Shenzhen, China"
      ],
      "name": "Feng Chen"
    },
    {
      "affiliations": [
        "Department of Anesthesiology, The Second Affiliated Hospital, School of Medicine, The Chinese University of Hong Kong, Shenzhen & Longgang District People’s Hospital of Shenzhen, Shenzhen, China"
      ],
      "name": "Shoujia Yu"
    },
    {
      "affiliations": [
        "Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China"
      ],
      "name": "Jing Li"
    },
    {
      "affiliations": [
        "Department of Anesthesiology, Longgang Maternity and Child Institute of Shantou University Medical College (Longgang District Maternity & Child Healthcare Hospital of Shenzhen City), Shenzhen, China"
      ],
      "name": "Yiyong Wei"
    }
  ],
  "title": "Effects of erector spinae plane block versus local infiltration analgesia for abdominal surgeries: a protocol for systematic review and meta-analysis",
  "uid": "fd8b47b3-dbf1-557d-ba3e-7a1acd08dbf0"
}