{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Ropivacaine+concentration",
    "query": {
      "intervention": "Ropivacaine concentration"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 18,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Ropivacaine+concentration&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-25T18:24:01.760Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT03409900",
      "title": "Lumbar Plexus Block Versus Quadratus Lumborum Block for Primary Anterior Total Hip Arthroplasty",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoarthritis",
        "Total Hip Arthroplasty"
      ],
      "interventions": [
        {
          "name": "LPB",
          "type": "OTHER"
        },
        {
          "name": "QLB",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "95 Years",
        "sex": "ALL",
        "summary": "18 Years to 95 Years"
      },
      "enrollment_count": 44,
      "start_date": "2019-03-04",
      "completion_date": "2019-11-22",
      "has_results": false,
      "last_update_posted_date": "2020-05-12",
      "last_synced_at": "2026-09-25T18:24:01.760Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03409900"
    },
    {
      "nct_id": "NCT04298099",
      "title": "Ropivacaine Plasma Concentrations and Pharmacokinetics Following Erector Spinae Plane Block in the Pediatric Population",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Anesthesia, Local"
      ],
      "interventions": [
        {
          "name": "Ropivacaine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Baylor College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "6 Months to 18 Years"
      },
      "enrollment_count": 4,
      "start_date": "2020-12-18",
      "completion_date": "2021-03-29",
      "has_results": true,
      "last_update_posted_date": "2024-05-17",
      "last_synced_at": "2026-09-25T18:24:01.760Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04298099"
    },
    {
      "nct_id": "NCT02849678",
      "title": "A Pain Study Comparing Two Commonly Used Medications to Treat Pain After Bowel Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Postoperative Pain"
      ],
      "interventions": [
        {
          "name": "Ropivacaine",
          "type": "DRUG"
        },
        {
          "name": "Lidocaine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Jacques E. Chelly",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 68,
      "start_date": "2008-01",
      "completion_date": "2016-05",
      "has_results": true,
      "last_update_posted_date": "2018-03-20",
      "last_synced_at": "2026-09-25T18:24:01.760Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02849678"
    },
    {
      "nct_id": "NCT01170702",
      "title": "Transverse Abdominis Plane (TAP) Block After Cesarean Delivery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Postoperative Pain",
        "Pregnancy",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "0.9% Normal Saline",
          "type": "DRUG"
        },
        {
          "name": "0.2% Ropivacaine",
          "type": "DRUG"
        },
        {
          "name": "0.5% Ropivacaine",
          "type": "DRUG"
        },
        {
          "name": "0.75% Ropivacaine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 120,
      "start_date": "2010-01",
      "completion_date": "2017-01",
      "has_results": true,
      "last_update_posted_date": "2021-12-08",
      "last_synced_at": "2026-09-25T18:24:01.760Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01170702"
    },
    {
      "nct_id": "NCT02893423",
      "title": "Ropivacaine Transversus Abdominis Plane Blocks for Cesarean Section Analgesia",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Postoperative Pain"
      ],
      "interventions": [
        {
          "name": "Ropivacaine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Maimonides Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 51,
      "start_date": "2013-01-01",
      "completion_date": "2016-09-30",
      "has_results": true,
      "last_update_posted_date": "2022-09-21",
      "last_synced_at": "2026-09-25T18:24:01.760Z",
      "location_count": 1,
      "location_summary": "Brooklyn, New York",
      "locations": [
        {
          "city": "Brooklyn",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02893423"
    },
    {
      "nct_id": "NCT04807504",
      "title": "Ropivacaine Pharmacokinetics in ESP Blocks",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Local Anesthetic Systemic Toxicity",
        "Pain",
        "Quality of Recovery"
      ],
      "interventions": [
        {
          "name": "Ropivacaine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Thomas Jefferson University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2021-03-26",
      "completion_date": "2021-09-23",
      "has_results": false,
      "last_update_posted_date": "2025-09-09",
      "last_synced_at": "2026-09-25T18:24:01.760Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04807504"
    },
    {
      "nct_id": "NCT04263064",
      "title": "High Volume Caudal Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Male Circumcision"
      ],
      "interventions": [
        {
          "name": "High Volume-Low Concentration without Clonidine",
          "type": "DRUG"
        },
        {
          "name": "High Volume-Low Concentration with clonidine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Medical University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "0 Years",
        "maximum_age": "3 Years",
        "sex": "MALE",
        "summary": "0 Years to 3 Years · Male only"
      },
      "enrollment_count": 129,
      "start_date": "2020-03-06",
      "completion_date": "2022-08-19",
      "has_results": false,
      "last_update_posted_date": "2023-03-14",
      "last_synced_at": "2026-09-25T18:24:01.760Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04263064"
    },
    {
      "nct_id": "NCT01556724",
      "title": "A Comparison of Postoperative Analgesic Nerve Block Ropivacaine Concentrations",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Total Hip Arthroplasty",
        "Postoperative Pain"
      ],
      "interventions": [
        {
          "name": "0.1% or 0.2% ropivacaine nerve blocks",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sylvia Wilson",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 41,
      "start_date": "2010-01",
      "completion_date": "2014-12",
      "has_results": true,
      "last_update_posted_date": "2018-01-17",
      "last_synced_at": "2026-09-25T18:24:01.760Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01556724"
    },
    {
      "nct_id": "NCT01898689",
      "title": "Optimizing Local Anesthetic Concentration for Continuous Popliteal-Sciatic Nerve Blocks",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Relatively Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "Ropivacaine 0.1%",
          "type": "DRUG"
        },
        {
          "name": "Ropivacaine 0.4%",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 24,
      "start_date": "2013-07",
      "completion_date": "2013-11",
      "has_results": true,
      "last_update_posted_date": "2021-03-19",
      "last_synced_at": "2026-09-25T18:24:01.760Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01898689"
    },
    {
      "nct_id": "NCT02526563",
      "title": "Serum Ropivacaine Concentrations in Pediatric Patients Receiving Continuous Wound Catheter Analgesia",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Alveolar Bone Grafting",
        "Alveolar Cleft Grafting"
      ],
      "interventions": [
        {
          "name": "ropivicaine",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "5 Years to 18 Years"
      },
      "enrollment_count": 4,
      "start_date": "2015-08",
      "completion_date": "2018-08",
      "has_results": false,
      "last_update_posted_date": "2019-08-05",
      "last_synced_at": "2026-09-25T18:24:01.760Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02526563"
    }
  ]
}