{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Fontan+Procedure&page=2",
    "query": {
      "condition": "Fontan Procedure",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Fontan+Procedure&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T06:01:46.327Z",
  "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": "NCT02966002",
      "title": "Aspirin as a Novel Anti-Inflammatory Modality in the Fontan Patients",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Fontan Procedure"
      ],
      "interventions": [
        {
          "name": "Aspirin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 9,
      "start_date": "2016-04",
      "completion_date": "2017-05-25",
      "has_results": true,
      "last_update_posted_date": "2018-05-18",
      "last_synced_at": "2026-05-22T06:01:46.327Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02966002"
    },
    {
      "nct_id": "NCT02269709",
      "title": "Stage 3 Fontan Operation Liver Ultrasound Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Fontan Operation"
      ],
      "interventions": [
        {
          "name": "ARFI Ultrasound",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "Up to 17 Years"
      },
      "enrollment_count": 21,
      "start_date": "2014-11",
      "completion_date": "2016-07",
      "has_results": true,
      "last_update_posted_date": "2018-01-12",
      "last_synced_at": "2026-05-22T06:01:46.327Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02269709"
    },
    {
      "nct_id": "NCT01971593",
      "title": "The Effects of Eplerenone on Markers of Myocardial Fibrosis in Adult Congenital Heart Disease",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Tetralogy of Fallot",
        "Transposition of the Great Vessels With an Arterial Switch",
        "Single Ventricle With a Fontan Palliation"
      ],
      "interventions": [
        {
          "name": "Eplerenone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Washington University School of Medicine",
      "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": 26,
      "start_date": "2013-08",
      "completion_date": "2016-06",
      "has_results": true,
      "last_update_posted_date": "2018-05-04",
      "last_synced_at": "2026-05-22T06:01:46.327Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01971593"
    },
    {
      "nct_id": "NCT02201342",
      "title": "Pharmacokinetic/Pharmacodynamic Study of Udenafil in Adolescents",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Single Ventricle Heart Disease After Fontan Surgery"
      ],
      "interventions": [
        {
          "name": "Udenafil",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mezzion Pharma Co. Ltd",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "14 Years to 18 Years"
      },
      "enrollment_count": 36,
      "start_date": "2014-07",
      "completion_date": "2015-04",
      "has_results": true,
      "last_update_posted_date": "2025-05-06",
      "last_synced_at": "2026-05-22T06:01:46.327Z",
      "location_count": 5,
      "location_summary": "Indianapolis, Indiana • Ann Arbor, Michigan • Cincinnati, Ohio + 2 more",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02201342"
    },
    {
      "nct_id": "NCT04195451",
      "title": "Re-Energize Fontan",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Single-ventricle"
      ],
      "interventions": [
        {
          "name": "Live-Video-Supervised Exercise Intervention",
          "type": "OTHER"
        },
        {
          "name": "Usual Care then Live-Video Supervised Exercise Intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "19 Years",
        "sex": "ALL",
        "summary": "8 Years to 19 Years"
      },
      "enrollment_count": 150,
      "start_date": "2020-08-06",
      "completion_date": "2026-03-01",
      "has_results": false,
      "last_update_posted_date": "2026-04-24",
      "last_synced_at": "2026-05-22T06:01:46.327Z",
      "location_count": 1,
      "location_summary": "Palo Alto, California",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04195451"
    },
    {
      "nct_id": "NCT04901975",
      "title": "Fibrosis and the Fontan",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Single-ventricle"
      ],
      "interventions": [
        {
          "name": "Spironolactone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Children's Hospital of Philadelphia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "6 Years",
        "sex": "ALL",
        "summary": "1 Year to 6 Years"
      },
      "enrollment_count": 145,
      "start_date": "2021-02-11",
      "completion_date": "2026-06-30",
      "has_results": false,
      "last_update_posted_date": "2025-06-08",
      "last_synced_at": "2026-05-22T06:01:46.327Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04901975"
    },
    {
      "nct_id": "NCT03170778",
      "title": "Ocular and Vision Problems in Patients After Fontan Operation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Congenital Heart Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 65,
      "start_date": "2016-02-13",
      "completion_date": "2022-05-01",
      "has_results": false,
      "last_update_posted_date": "2022-05-04",
      "last_synced_at": "2026-05-22T06:01:46.327Z",
      "location_count": 1,
      "location_summary": "Palo Alto, California",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03170778"
    },
    {
      "nct_id": "NCT03013751",
      "title": "A Extension Study of Udenafil in Adolescents",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Functional Single Ventricle Heart Disease"
      ],
      "interventions": [
        {
          "name": "Udenafil",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mezzion Pharma Co. Ltd",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "12 Years to 18 Years"
      },
      "enrollment_count": 301,
      "start_date": "2017-02-06",
      "completion_date": "2022-12-20",
      "has_results": true,
      "last_update_posted_date": "2025-12-09",
      "last_synced_at": "2026-05-22T06:01:46.327Z",
      "location_count": 21,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • San Diego, California + 18 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Wilmington",
          "state": "Delaware"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03013751"
    },
    {
      "nct_id": "NCT03853837",
      "title": "Ventricular and Pulmonary Vascular Reserve After the Fontan Operation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Heart Failure",
        "Congenital Heart Disease"
      ],
      "interventions": [
        {
          "name": "rest-exercise echocardiography",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 32,
      "start_date": "2018-08-30",
      "completion_date": "2022-07-21",
      "has_results": false,
      "last_update_posted_date": "2022-10-06",
      "last_synced_at": "2026-05-22T06:01:46.327Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03853837"
    },
    {
      "nct_id": "NCT00633815",
      "title": "Upright Versus Supine Exercise Testing in Fontan-palliated Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Fontan Palliation"
      ],
      "interventions": [
        {
          "name": "Supine positioning",
          "type": "OTHER"
        },
        {
          "name": "Upright positioning",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "8 Years to 30 Years"
      },
      "enrollment_count": 45,
      "start_date": "2008-01",
      "completion_date": "2008-11",
      "has_results": false,
      "last_update_posted_date": "2017-05-10",
      "last_synced_at": "2026-05-22T06:01:46.327Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00633815"
    }
  ]
}