{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Constriction&page=4",
    "query": {
      "condition": "Constriction",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 1008,
    "total_pages": 101,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Constriction&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Constriction&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-22T14:46:28.806Z",
  "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": "NCT04552275",
      "title": "The HALT Biomarker Study",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Aortic Stenosis",
        "Hypo-attenuated Leaflet Thickening",
        "Bioprosthetic Valve Degeneration"
      ],
      "interventions": [
        {
          "name": "Proteomics Analysis",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 300,
      "start_date": "2020-06-22",
      "completion_date": "2035-06-22",
      "has_results": false,
      "last_update_posted_date": "2021-11-10",
      "last_synced_at": "2026-10-22T14:46:28.806Z",
      "location_count": 3,
      "location_summary": "Boston, Massachusetts • Minneapolis, Minnesota • Manchester, New Hampshire",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Manchester",
          "state": "New Hampshire"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04552275"
    },
    {
      "nct_id": "NCT04068402",
      "title": "Vivio AS (Aortic Stenosis) Algorithm Optimization Study",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Aortic Stenosis"
      ],
      "interventions": [
        {
          "name": "Vivio System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Ventric Health, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2019-06-27",
      "completion_date": "2019-10-30",
      "has_results": false,
      "last_update_posted_date": "2022-07-20",
      "last_synced_at": "2026-10-22T14:46:28.806Z",
      "location_count": 1,
      "location_summary": "Grand Rapids, Michigan",
      "locations": [
        {
          "city": "Grand Rapids",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04068402"
    },
    {
      "nct_id": "NCT03836300",
      "title": "Parent and Infant Inter(X)Action Intervention (PIXI)",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Fragile X Syndrome",
        "Angelman Syndrome",
        "Prader-Willi Syndrome",
        "Dup15Q Syndrome",
        "Duchenne Muscular Dystrophy",
        "Phelan-McDermid Syndrome",
        "Rett Syndrome",
        "Smith Magenis Syndrome",
        "Williams Syndrome",
        "Turner Syndrome",
        "Klinefelter Syndrome",
        "Chromosome 22q11.2 Deletion Syndrome",
        "Tuberous Sclerosis",
        "Down Syndrome"
      ],
      "interventions": [
        {
          "name": "Parent-Infant Inter(X)action Intervention (PIXI)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "RTI International",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "Up to 99 Years"
      },
      "enrollment_count": 120,
      "start_date": "2018-11-30",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-07-13",
      "last_synced_at": "2026-10-22T14:46:28.806Z",
      "location_count": 1,
      "location_summary": "Research Triangle Park, North Carolina",
      "locations": [
        {
          "city": "Research Triangle Park",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03836300"
    },
    {
      "nct_id": "NCT00000411",
      "title": "Spine Patient Outcomes Research Trial (SPORT): Spinal Stenosis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Spinal Stenosis",
        "Low Back Pain"
      ],
      "interventions": [
        {
          "name": "Decompressive laminectomy",
          "type": "PROCEDURE"
        },
        {
          "name": "Non-surgical treatments",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "Dartmouth-Hitchcock Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 289,
      "start_date": "2000-03",
      "completion_date": "2015-04",
      "has_results": false,
      "last_update_posted_date": "2015-08-04",
      "last_synced_at": "2026-10-22T14:46:28.806Z",
      "location_count": 13,
      "location_summary": "Oakland, California • San Francisco, California • Decatur, Georgia + 9 more",
      "locations": [
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Decatur",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Scarborough",
          "state": "Maine"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00000411"
    },
    {
      "nct_id": "NCT02101619",
      "title": "Assessment of Myocardial Tissue Damage in Aortic Stenosis",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Aortic Stenosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 59,
      "start_date": "2013-08",
      "completion_date": "2016-06",
      "has_results": false,
      "last_update_posted_date": "2016-08-17",
      "last_synced_at": "2026-10-22T14:46:28.806Z",
      "location_count": 1,
      "location_summary": "Scottsdale, Arizona",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02101619"
    },
    {
      "nct_id": "NCT01580709",
      "title": "Endoscopic Retrograde Cholangiopancreatography (ERCP) Based Sampling of Indeterminate Bile Duct Strictures",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Indeterminate Bile Duct Stricture"
      ],
      "interventions": [
        {
          "name": "Multiple brushings",
          "type": "PROCEDURE"
        },
        {
          "name": "Multimodality tissue sampling",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Medical University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 48,
      "start_date": "2012-04",
      "completion_date": "2016-09",
      "has_results": false,
      "last_update_posted_date": "2016-09-20",
      "last_synced_at": "2026-10-22T14:46:28.806Z",
      "location_count": 2,
      "location_summary": "Indianapolis, Indiana • Charleston, South Carolina",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01580709"
    },
    {
      "nct_id": "NCT00180544",
      "title": "Safety and Effectiveness Study of the HERCULINK 14 Stent to Treat Renal Artery Disease",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Renal Artery Obstruction"
      ],
      "interventions": [
        {
          "name": "Stenting: Renal Artery",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Abbott Medical Devices",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 167,
      "start_date": "2000-07",
      "completion_date": "2004-08",
      "has_results": false,
      "last_update_posted_date": "2008-07-28",
      "last_synced_at": "2026-10-22T14:46:28.806Z",
      "location_count": 1,
      "location_summary": "New Orleans, Louisiana",
      "locations": [
        {
          "city": "New Orleans",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00180544"
    },
    {
      "nct_id": "NCT06252350",
      "title": "CERROS Pilot Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Coronary Artery Disease",
        "Myocardial Infarction",
        "Coronary Disease",
        "Coronary Stenosis",
        "Angina Pectoris",
        "Chest Pain"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Angiowave Imaging",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2024-02-22",
      "completion_date": "2024-03-08",
      "has_results": false,
      "last_update_posted_date": "2024-03-12",
      "last_synced_at": "2026-10-22T14:46:28.806Z",
      "location_count": 1,
      "location_summary": "Grand Rapids, Michigan",
      "locations": [
        {
          "city": "Grand Rapids",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06252350"
    },
    {
      "nct_id": "NCT05491980",
      "title": "Florida Cerebrovascular Disease Biorepository and Genomics Center",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cerebrovascular Disease",
        "Ischemic Stroke",
        "Transient Ischemic Attack",
        "Intracerebral Hemorrhage",
        "Aneurysmal Subarachnoid Hemorrhage",
        "Vascular Dementia",
        "Anoxic Brain Injury",
        "Unruptured Intracranial Aneurysm",
        "Carotid Artery Stenosis Symptomatic",
        "Asymptomatic Carotid Artery Stenosis",
        "Non-Aneurysmal Perimesencephalic Subarachnoid Haemorrhage",
        "Cerebral Venous Thrombosis",
        "Moyamoya Disease",
        "Fibromuscular Dysplasia",
        "Subarachnoid Hemorrhage",
        "Leukoaraiosis",
        "Arteriovenous Fistula",
        "Reversible Cerebral Vasoconstriction Syndrome",
        "CADASIL"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 72,
      "start_date": "2022-08-02",
      "completion_date": "2030-06",
      "has_results": false,
      "last_update_posted_date": "2026-09-03",
      "last_synced_at": "2026-10-22T14:46:28.806Z",
      "location_count": 1,
      "location_summary": "Jacksonville, Florida",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05491980"
    },
    {
      "nct_id": "NCT03269396",
      "title": "Laryngeal Allograft Transplantation",
      "overall_status": "SUSPENDED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Larynx Stenosis",
        "Larynx Disease",
        "Laryngectomy",
        "Larynx",
        "Larynx Fracture"
      ],
      "interventions": [
        {
          "name": "Larynx Allograft Transplantation",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2023-05-19",
      "completion_date": "2033-05",
      "has_results": false,
      "last_update_posted_date": "2026-07-22",
      "last_synced_at": "2026-10-22T14:46:28.806Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03269396"
    }
  ]
}