{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Block+performed&page=5",
    "query": {
      "intervention": "Block performed",
      "page": 5
    },
    "page_size": 10
  },
  "pagination": {
    "page": 5,
    "page_size": 10,
    "total_count": 553,
    "total_pages": 56,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Block+performed&page=6&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Block+performed&page=4&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-30T12:37:57.169Z",
  "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": "NCT01986751",
      "title": "Effectiveness of Perineural Clonidine as an Adjuvant With Ropivacaine for Popliteal Nerve Block in Patients Undergoing Foot and Ankle Surgery",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Pain"
      ],
      "interventions": [
        {
          "name": "Clonidine",
          "type": "DRUG"
        },
        {
          "name": "ropivacaine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 14,
      "start_date": "2014-01",
      "completion_date": "2015-12",
      "has_results": true,
      "last_update_posted_date": "2016-11-04",
      "last_synced_at": "2026-10-30T12:37:57.169Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01986751"
    },
    {
      "nct_id": "NCT02056288",
      "title": "A Comparison of UGSB and GA to IV Narcotics and GA for Post-Op Pain in Children With Supracondylar Fractures.",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Supracondylar Fractures"
      ],
      "interventions": [
        {
          "name": "Fentanyl",
          "type": "DRUG"
        },
        {
          "name": "Ropivacaine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Baylor College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "2 Years to 17 Years"
      },
      "enrollment_count": 78,
      "start_date": "2011-03-10",
      "completion_date": "2019-03-01",
      "has_results": true,
      "last_update_posted_date": "2021-05-21",
      "last_synced_at": "2026-10-30T12:37:57.169Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02056288"
    },
    {
      "nct_id": "NCT01599403",
      "title": "Thoracic Blocks Versus Thoracic Epidural and Patient Controlled Anesthesia in Traumatic Rib Fracture Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Traumatic Rib Fracture"
      ],
      "interventions": [
        {
          "name": "Paravertebral Block",
          "type": "PROCEDURE"
        },
        {
          "name": "Intercostal Nerve Block",
          "type": "PROCEDURE"
        },
        {
          "name": "Epidural Block",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 50,
      "start_date": "2012-04",
      "completion_date": "2017-02-01",
      "has_results": false,
      "last_update_posted_date": "2017-02-13",
      "last_synced_at": "2026-10-30T12:37:57.169Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01599403"
    },
    {
      "nct_id": "NCT00392054",
      "title": "First Line Radiofrequency Ablation Versus Antiarrhythmic Drugs for Atrial Fibrillation Treatment (The RAAFT Study)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Atrial Fibrillation"
      ],
      "interventions": [
        {
          "name": "Pulmonary Vein Isolation performed by Catheter Ablation",
          "type": "PROCEDURE"
        },
        {
          "name": "Conventional Antiarrhythmic Drug Therapy",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG"
      ],
      "sponsor": "Population Health Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "19 Years to 75 Years"
      },
      "enrollment_count": 127,
      "start_date": "2006-08",
      "completion_date": "2012-02",
      "has_results": true,
      "last_update_posted_date": "2020-01-31",
      "last_synced_at": "2026-10-30T12:37:57.169Z",
      "location_count": 2,
      "location_summary": "Austin, Texas",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        },
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00392054"
    },
    {
      "nct_id": "NCT04489095",
      "title": "Conduction Disease After Transcatheter Aortic Valve Replacement",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Aortic Stenosis",
        "Heart Block",
        "Aortic Insufficiency"
      ],
      "interventions": [
        {
          "name": "Electrophysiology Study",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Henry Ford Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 126,
      "start_date": "2020-07-16",
      "completion_date": "2022-08-01",
      "has_results": false,
      "last_update_posted_date": "2022-12-14",
      "last_synced_at": "2026-10-30T12:37:57.169Z",
      "location_count": 1,
      "location_summary": "Detroit, Michigan",
      "locations": [
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04489095"
    },
    {
      "nct_id": "NCT03365908",
      "title": "Pain Management of ACL Reconstruction",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Anterior Cruciate Ligament Rupture"
      ],
      "interventions": [
        {
          "name": "Adductor Canal Nerve Block",
          "type": "PROCEDURE"
        },
        {
          "name": "Ropivacaine injection",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG"
      ],
      "sponsor": "University of California, Davis",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 60,
      "start_date": "2017-10-09",
      "completion_date": "2027-07-01",
      "has_results": false,
      "last_update_posted_date": "2026-08-18",
      "last_synced_at": "2026-10-30T12:37:57.169Z",
      "location_count": 1,
      "location_summary": "Sacramento, California",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03365908"
    },
    {
      "nct_id": "NCT01135485",
      "title": "Evaluation of Panel Reactive Antibody in Children Following Stage I Palliation for Hypoplastic Left Heart Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Congenital Heart Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "8 Years to 18 Years"
      },
      "enrollment_count": 33,
      "start_date": "2010-03",
      "completion_date": "2016-12",
      "has_results": false,
      "last_update_posted_date": "2017-08-02",
      "last_synced_at": "2026-10-30T12:37:57.169Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01135485"
    },
    {
      "nct_id": "NCT03496792",
      "title": "The Venous Distension Reflex and Orthostatic Hypertension",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Blood Pressure"
      ],
      "interventions": [
        {
          "name": "Tilt + external pressure",
          "type": "OTHER"
        },
        {
          "name": "Tilt + no external pressure.",
          "type": "OTHER"
        },
        {
          "name": "Limb occlusion + negative pressure",
          "type": "OTHER"
        },
        {
          "name": "Limb occlusion + no negative pressure",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Milton S. Hershey Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2020-03-10",
      "completion_date": "2027-11-01",
      "has_results": false,
      "last_update_posted_date": "2026-07-09",
      "last_synced_at": "2026-10-30T12:37:57.169Z",
      "location_count": 1,
      "location_summary": "Hershey, Pennsylvania",
      "locations": [
        {
          "city": "Hershey",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03496792"
    },
    {
      "nct_id": "NCT07527299",
      "title": "A Study of VARIPULSE Catheter in Participants With Persistent Atrial Fibrillation Undergoing Pulmonary Vein and Superior Vena Cava Isolation",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Atrial Fibrillation"
      ],
      "interventions": [
        {
          "name": "VARIPULSE Catheter System",
          "type": "DEVICE"
        },
        {
          "name": "LAAO Device",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Biosense Webster, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 1070,
      "start_date": "2026-08-26",
      "completion_date": "2031-08-24",
      "has_results": false,
      "last_update_posted_date": "2026-09-25",
      "last_synced_at": "2026-10-30T12:37:57.169Z",
      "location_count": 11,
      "location_summary": "Birmingham, Alabama • Tucson, Arizona • Jonesboro, Arkansas + 8 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Jonesboro",
          "state": "Arkansas"
        },
        {
          "city": "Santa Monica",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07527299"
    },
    {
      "nct_id": "NCT02105558",
      "title": "Outcomes of Neuraxial Anesthetic Technique on the Trial of Labor After Cesarean (TOLAC)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Labor Pain",
        "Complications; Cesarean Section",
        "Pregnancy"
      ],
      "interventions": [
        {
          "name": "Epidural anesthesia",
          "type": "DRUG"
        },
        {
          "name": "Combined spinal and epidural anesthesia",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 50 Years · Female only"
      },
      "enrollment_count": 46,
      "start_date": "2014-04",
      "completion_date": "2017-04-13",
      "has_results": true,
      "last_update_posted_date": "2018-07-19",
      "last_synced_at": "2026-10-30T12:37:57.169Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02105558"
    }
  ]
}