{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Single+Ventricle+Heart+Disease+After+Fontan+Surgery",
    "query": {
      "condition": "Single Ventricle Heart Disease After Fontan Surgery"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 5,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-23T18:21:17.335Z",
  "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": "NCT00571233",
      "title": "Biomarker Study for Heart Failure in Children With Single Ventricle Physiology",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Tricuspid Atresia",
        "Hypoplastic Left Heart Syndrome",
        "Unbalanced AV Canal"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Month",
        "maximum_age": "6 Years",
        "sex": "ALL",
        "summary": "1 Month to 6 Years"
      },
      "enrollment_count": 71,
      "start_date": "2007-02",
      "completion_date": "2015-01",
      "has_results": false,
      "last_update_posted_date": "2015-05-14",
      "last_synced_at": "2026-07-23T18:21:17.335Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00571233"
    },
    {
      "nct_id": "NCT03088345",
      "title": "Early Use of Vasopressin in Post-Fontan Management",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Circulatory Perfusion Disorder",
        "Congenital Heart Disease",
        "Single-ventricle"
      ],
      "interventions": [
        {
          "name": "Vasopressin, Arginine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Medical College of Wisconsin",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Weeks",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "3 Weeks to 18 Years"
      },
      "enrollment_count": 20,
      "start_date": "2017-03-06",
      "completion_date": "2019-01-28",
      "has_results": true,
      "last_update_posted_date": "2020-07-07",
      "last_synced_at": "2026-07-23T18:21:17.335Z",
      "location_count": 1,
      "location_summary": "Milwaukee, Wisconsin",
      "locations": [
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03088345"
    },
    {
      "nct_id": "NCT02975999",
      "title": "Use of Vasopressin Following the Fontan Operation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Pleural Effusion",
        "Single-ventricle"
      ],
      "interventions": [
        {
          "name": "Vasopressin",
          "type": "DRUG"
        },
        {
          "name": "Normal Saline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Months",
        "maximum_age": "7 Years",
        "sex": "ALL",
        "summary": "18 Months to 7 Years"
      },
      "enrollment_count": 12,
      "start_date": "2016-12",
      "completion_date": "2019-12",
      "has_results": true,
      "last_update_posted_date": "2024-10-24",
      "last_synced_at": "2026-07-23T18:21:17.335Z",
      "location_count": 1,
      "location_summary": "Oak Lawn, Illinois",
      "locations": [
        {
          "city": "Oak Lawn",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02975999"
    },
    {
      "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": "2026-07-23T18:21:17.335Z",
      "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": "NCT01815502",
      "title": "Study of Effects of Sildenafil on Patients With Fontan Heart Circulation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Single Ventricle Heart Disease After Fontan Surgery"
      ],
      "interventions": [
        {
          "name": "Cardiac catheterization",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Medical University of South Carolina",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "3 Years to 40 Years"
      },
      "enrollment_count": 20,
      "start_date": "2013-02",
      "completion_date": "2014-12",
      "has_results": true,
      "last_update_posted_date": "2018-12-07",
      "last_synced_at": "2026-07-23T18:21:17.335Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01815502"
    }
  ]
}