{
  "abstract": "Please confirm that an ethics committee approval has been applied for or granted: Yes: I’m uploading the Ethics Committee Approval as a PDF file with this abstract submissionBackground and Aims The Perioperative Pain Service (POPS) at Hospital for Special Surgery (HSS) is a multidisciplinary team specializing in pain management of orthopedic surgical patients. Under POPS, the Chronic/Complex pain service (CPS) identifies patients at high-risk for severe postoperative pain and opioid related adverse events before surgery, and devises personalized pain management plans, while the Acute Pain Service (APS) is an inpatient team that places and manages patient-controlled analgesia (PCA) when in response to uncontrolled postsurgical pain without any previously known risk factors, or when surgeons pre-emptively request PCAs. The aim of this study was to map and compare acute pain trajectories in patients undergoing Total Hip Arthroplasty (THA) with and without POPS involvement.Methods After IRB approval, adult patients undergoing unilateral total hip arthroplasty receiving neuraxial anesthesia with and without peripheral nerve blocks between January 10th, 2022, to February 28th, 2025, at HSS were extracted from an institutional registry. Baseline patient characteristics, length of stay, and pain trajectories were generated from patients managed by APS, CPS, and without the pain team.Results A total of 12,637 THA cases were identified; patients managed by CPS had a higher comorbidity burden for certain comorbidities, more frequently used prescription opioids and self-reported substance use preoperatively and had higher average hourly pain scores and incidences of severe pain over 72 hours postoperatively ( table 1 and figure 1).Abstract P199 Table 1Descriptive table for baseline patients‘ characteristics, comorbidities, PACU and other outcomes by APS vs. CPS vs. Non-POPS among THA patientsAbstract P199 Figure 1(A) Hourly average pain scores in the first 72 hours post-THA and (B) incidence rate for NRS pain scores >=7 defined by every 2 hours in patients managed by the acute pain service (APS), complex pain service (CPS) and without the pain teamConclusions Acute pain trajectories after THA vary depending on pre-existing known and yet to be identified patient and surgical factors. Patients with complex/chronic pain experience more severe acute pain after THA. Studies are underway to evaluate the impact of peripheral nerve blocks on these trajectories.",
  "authors": [
    {
      "affiliations": [
        "Pain Prevention Research Center, Department of Anesthesiology, Critical Care and Pain Management, Hospital for Special Surgery, New York, USA",
        "Department of Anesthesiology, Weill Cornell Medicine, New York, USA"
      ],
      "name": "Faye Rim"
    },
    {
      "affiliations": [
        "Department of Anesthesiology, Critical Care and Pain management, Hospital for Special Surgery, New York, USA"
      ],
      "name": "Junying Wang"
    },
    {
      "affiliations": [
        "Pain Prevention Research Center, Department of Anesthesiology, Critical Care and Pain Management, Hospital for Special Surgery, New York, USA"
      ],
      "name": "William Chan"
    },
    {
      "affiliations": [
        "Department of Anesthesiology, Critical Care and Pain management, Hospital for Special Surgery/Weill Cornell Medicine, New York, USA"
      ],
      "name": "Daniel Maalouf"
    },
    {
      "affiliations": [
        "Pain Prevention Research Center, Department of Anesthesiology, Critical Care and Pain Management, Hospital for Special Surgery, New York, USA",
        "Department of Anesthesiology, Weill Cornell Medicine, New York, USA"
      ],
      "name": "Jiabin Liu"
    },
    {
      "affiliations": [
        "Department of Anesthesiology, Critical Care and Pain management, Hospital for Special Surgery/Weill Cornell Medicine, New York, USA"
      ],
      "name": "Dae Kim"
    },
    {
      "affiliations": [
        "Pain Prevention Research Center, Department of Anesthesiology, Critical Care and Pain Management, Hospital for Special Surgery, New York, USA"
      ],
      "name": "Jashvant Poeran"
    },
    {
      "affiliations": [
        "Pain Prevention Research Center, Department of Anesthesiology, Critical Care and Pain Management, Hospital for Special Surgery, New York, USA",
        "Department of Anesthesiology, Weill Cornell Medicine, New York, USA"
      ],
      "name": "Alexandra Sideris"
    }
  ],
  "title": "P199 Acute pain trajectories in patients undergoing total hip arthroplasty at a high-volume orthopedic surgical hospital in the United States",
  "uid": "baf4e5fe-0bd9-5a2f-96f2-a7530c6b5851"
}