{
  "abstract": "Background and Aims Pain recovery following total knee arthroplasty (TKA) remains a significant barrier to rehabilitation. The adductor canal block (ACB) is a key component of multimodal analgesia.1 A continuous technique (CACB) has shown limited results in inpatients.2 We aimed to identify whether single injection (SACB) or CACB offers the best analgesia as measured by opioid consumption and quality of recovery scores at the post-surgical 48-hour mark in outpatient or short-stay settingMethods A single center double-blind, randomized controlled trial conducted on primary TKA outpatient or short-stay setting. Ethics board approval was obtained (#23–0223-C). Patients received the same perioperative management:spinal anesthetic, preoperative ACB, and IPACK blocks, and multimodal analgesia.3 Following surgery, a CACB catheter was inserted using the tunneled Interspace between Sartorius muscle and Femoral artery (ISAFE) technique,4 and infused at a rate of 5 ml/hour for 60 hours with a solution mixture of Ropivacaine 0.2% for the intervention group versus placebo. The primary outcome was total opioid consumption for the first 48 postoperative hours. Secondary outcomes were Quality of Recovery (QoR-15) scores,5 numerical rating scale (NRS), hospital length-of-stay (LOS), and complications. The sample size calculated was 60.Results Twenty-nine in the CACB group and 30 in the control group were included. Baseline characteristics between the two groups were similar ( table 1). The 48-hour opioid consumption, in morphine oral equivalent, was lower in the CACB group with median [IQR ] 5 [0–15] mg (control group median [IQR ] 20 [10–36] mg ; p < 0.01) (figure 1). QoR-15 scores were significantly higher for the CACB group than the SACB, p<0.01 (table 2). Pain scores were significantly lower for the CACB group. No differences for LOS.Abstract OP61 Figure 1Postoperative opioid consumptionAbstract OP61 Table 1Patient demographic and continuous-catheter characteristicsAbstract OP61 Table 2Secondary outcomesConclusions For outpatient or short-stay primary TKA, CACB provides superior analgesia and better quality recovery rates over SACB.",
  "authors": [
    {
      "affiliations": [
        "Anesthesia Service and Pain Medicine, Mount Sinai Hospital Toronto, Toronto, Canada"
      ],
      "name": "Yehoshua Gleicher"
    },
    {
      "affiliations": [
        "Anesthesia Service and Pain Medicine, Mount Sinai Hospital Toronto, Toronto, Canada"
      ],
      "name": "Hermann Dos Santos Fernandes"
    },
    {
      "affiliations": [
        "Anesthesia Service and Pain Medicine, Mount Sinai Hospital Toronto, Toronto, Canada"
      ],
      "name": "Sharon Peacock"
    },
    {
      "affiliations": [
        "Anesthesia Service and Pain Medicine, Mount Sinai Hospital Toronto, Toronto, Canada",
        "Anesthesia Service and Pain Medicine, Mount Sinai Hospital Toronto, Toronto, Canada"
      ],
      "name": "Javiera Vargas"
    },
    {
      "affiliations": [
        "Anesthesia Service and Pain Medicine, Mount Sinai Hospital Toronto, Toronto, Canada"
      ],
      "name": "Carlson Asanghanwa"
    },
    {
      "affiliations": [
        "Anesthesia Service and Pain Medicine, Mount Sinai Hospital Toronto, Toronto, Canada"
      ],
      "name": "Fernanda Lanza"
    },
    {
      "affiliations": [
        "Anesthesia Service and Pain Medicine, Mount Sinai Hospital Toronto, Toronto, Canada"
      ],
      "name": "Naveed Siddiqui"
    },
    {
      "affiliations": [
        "Anesthesia Service and Pain Medicine, Mount Sinai Hospital Toronto, Toronto, Canada"
      ],
      "name": "Divya Mahajan"
    }
  ],
  "title": "OP61 Outpatient continuous adductor canal block in total knee arthroplasty: a double blinded randomized controlled trial",
  "uid": "9bc245bf-d65e-5223-958a-9be5db7d1820"
}