{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=VAS&page=4",
    "query": {
      "intervention": "VAS",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 233,
    "total_pages": 24,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=VAS&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=VAS&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-29T18:33:43.229Z",
  "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": "NCT01966458",
      "title": "A Clinical Trial to Evaluate the HeartWare™ Ventricular Assist System (ENDURANCE SUPPLEMENTAL TRIAL)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Heart Failure"
      ],
      "interventions": [
        {
          "name": "HeartWare® VAS (HVAD)",
          "type": "DEVICE"
        },
        {
          "name": "Control LVAD",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Medtronic Cardiac Rhythm and Heart Failure",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 494,
      "start_date": "2013-10",
      "completion_date": "2020-08",
      "has_results": true,
      "last_update_posted_date": "2020-10-23",
      "last_synced_at": "2026-10-29T18:33:43.229Z",
      "location_count": 47,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Los Angeles, California + 37 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01966458"
    },
    {
      "nct_id": "NCT02280304",
      "title": "Meditation in Veterans With PTSD and Mild TBI",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Stress Disorders, Post-Traumatic",
        "Concussion, Mild"
      ],
      "interventions": [
        {
          "name": "Inner Resources for Veterans (IRV)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Essential Skills therapy",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 46,
      "start_date": "2014-11-03",
      "completion_date": "2018-03-26",
      "has_results": true,
      "last_update_posted_date": "2020-03-09",
      "last_synced_at": "2026-10-29T18:33:43.229Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02280304"
    },
    {
      "nct_id": "NCT00771173",
      "title": "CATHETER ANALGESIA TRIAL Phenazopyrdine vs. Placebo: a Randomized Controlled Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Catheter-related Bladder Discomfort"
      ],
      "interventions": [
        {
          "name": "phenazopyridine HCl",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Loyola 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": 258,
      "start_date": "2008-08",
      "completion_date": "2010-01",
      "has_results": true,
      "last_update_posted_date": "2016-09-29",
      "last_synced_at": "2026-10-29T18:33:43.229Z",
      "location_count": 1,
      "location_summary": "Maywood, Illinois",
      "locations": [
        {
          "city": "Maywood",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00771173"
    },
    {
      "nct_id": "NCT07209280",
      "title": "Cannulated Bone Bolt® Screw System Versus Standard Cannulated Screw System Fixation for Pelvic Fractures",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pain"
      ],
      "interventions": [
        {
          "name": "Cannulated Bone Bolt® Screw System",
          "type": "OTHER"
        },
        {
          "name": "Standard Cannulated Screw System",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Utah",
      "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": 100,
      "start_date": "2025-06-11",
      "completion_date": "2028-06",
      "has_results": false,
      "last_update_posted_date": "2026-04-23",
      "last_synced_at": "2026-10-29T18:33:43.229Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07209280"
    },
    {
      "nct_id": "NCT05654012",
      "title": "Migraine in Adolescents",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Migraine"
      ],
      "interventions": [
        {
          "name": "MRI",
          "type": "DEVICE"
        },
        {
          "name": "Thermal Stimuli",
          "type": "DEVICE"
        },
        {
          "name": "Pressure stimuli",
          "type": "DEVICE"
        },
        {
          "name": "Pain ratings",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Pressure pain thresholds (PPT)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Conditioned pain modulation (CPM) efficiency",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Hormonal assessment",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Migraine-related measures",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Neural assessments",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Pubertal status",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "BEHAVIORAL",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "13 Years",
        "sex": "ALL",
        "summary": "10 Years to 13 Years"
      },
      "enrollment_count": 250,
      "start_date": "2023-06-01",
      "completion_date": "2030-03-15",
      "has_results": false,
      "last_update_posted_date": "2026-07-13",
      "last_synced_at": "2026-10-29T18:33:43.229Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05654012"
    },
    {
      "nct_id": "NCT03845881",
      "title": "Trial Comparing a Multi-Modal Pain Protocol With and Without Opioids Following Total Joint Arthroplasty",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Total Knee Arthroplasty"
      ],
      "interventions": [
        {
          "name": "Oxycodone",
          "type": "DRUG"
        },
        {
          "name": "Placebo Oral Tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "18 Years to 89 Years"
      },
      "enrollment_count": 45,
      "start_date": "2019-04-10",
      "completion_date": "2020-07-28",
      "has_results": false,
      "last_update_posted_date": "2020-07-30",
      "last_synced_at": "2026-10-29T18:33:43.229Z",
      "location_count": 1,
      "location_summary": "Jacksonville, Florida",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03845881"
    },
    {
      "nct_id": "NCT01821209",
      "title": "A Study of Intra-operative Autologous Retropubic Urethral Sling on Urinary Control After Robot Assisted Radical Prostatectomy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Men With Prostate Cancer Undergoing Robot Assisted Radical Prostatectomy"
      ],
      "interventions": [
        {
          "name": "Placement of sling",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "75 Years",
        "sex": "MALE",
        "summary": "45 Years to 75 Years · Male only"
      },
      "enrollment_count": 203,
      "start_date": "2013-04",
      "completion_date": "2015-05",
      "has_results": false,
      "last_update_posted_date": "2015-05-27",
      "last_synced_at": "2026-10-29T18:33:43.229Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01821209"
    },
    {
      "nct_id": "NCT04639011",
      "title": "Duloxetine Tibial Plateau",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Tibial Plateau Fracture",
        "Pain, Postoperative"
      ],
      "interventions": [
        {
          "name": "Duloxetine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "Standard of care (SOC) for tibial plateau surgery",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Boston Medical Center",
      "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": 0,
      "start_date": "2022-10",
      "completion_date": "2023-12",
      "has_results": false,
      "last_update_posted_date": "2022-11-21",
      "last_synced_at": "2026-10-29T18:33:43.229Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts • Valhalla, New York",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Valhalla",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04639011"
    },
    {
      "nct_id": "NCT03632616",
      "title": "Quality of Life Assessment of Chronic Pancreatitis Endoscopic Interventions",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Pancreatitis"
      ],
      "interventions": [
        {
          "name": "PANQOLI (quality of life instrument)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 500,
      "start_date": "2017-07-01",
      "completion_date": "2026-08-01",
      "has_results": false,
      "last_update_posted_date": "2024-05-22",
      "last_synced_at": "2026-10-29T18:33:43.229Z",
      "location_count": 2,
      "location_summary": "Aurora, Colorado • Baltimore, Maryland",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03632616"
    },
    {
      "nct_id": "NCT01666561",
      "title": "The Effect of Oat Based Breakfast Cereals on Satiety and Food Intake.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Food Intake",
        "Satiety"
      ],
      "interventions": [
        {
          "name": "Breakfast Test Cereal 1, Oat based",
          "type": "OTHER"
        },
        {
          "name": "Breakfast Test Cereal 2, Oat-based",
          "type": "OTHER"
        },
        {
          "name": "Ready-to-eat cereal",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Frank Greenway",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 48,
      "start_date": "2012-08",
      "completion_date": "2013-07",
      "has_results": false,
      "last_update_posted_date": "2015-12-18",
      "last_synced_at": "2026-10-29T18:33:43.229Z",
      "location_count": 1,
      "location_summary": "Baton Rouge, Louisiana",
      "locations": [
        {
          "city": "Baton Rouge",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01666561"
    }
  ]
}