{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=NYHA+Class+IV+Heart+Failure",
    "query": {
      "condition": "NYHA Class IV Heart Failure"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 30,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=NYHA+Class+IV+Heart+Failure&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-24T13:46:10.515Z",
  "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": "NCT00578695",
      "title": "THE BALANCE Study: Treatment of Hyponatremia Based on Lixivaptan in NYHA Class III/IV Cardiac Patient Evaluation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hyponatremia"
      ],
      "interventions": [
        {
          "name": "lixivaptan",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "CardioKine Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 652,
      "start_date": "2007-01",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2011-06-28",
      "last_synced_at": "2026-07-24T13:46:10.515Z",
      "location_count": 102,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Bakersfield, California + 82 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Banning",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00578695"
    },
    {
      "nct_id": "NCT00063687",
      "title": "Oxypurinol Compared With Placebo for Class III-IV NYHA Congestive Heart Failure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Congestive Heart Failure"
      ],
      "interventions": [
        {
          "name": "Oxypurinol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Advanz Pharma",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 400,
      "start_date": "2003-03",
      "completion_date": "2005-06",
      "has_results": false,
      "last_update_posted_date": "2005-08-05",
      "last_synced_at": "2026-07-24T13:46:10.515Z",
      "location_count": 4,
      "location_summary": "Oceanside, California • Baltimore, Maryland • Boston, Massachusetts + 1 more",
      "locations": [
        {
          "city": "Oceanside",
          "state": "California"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00063687"
    },
    {
      "nct_id": "NCT05835063",
      "title": "A Study to Improve Physician-Youth Communication and Medical Decision Making",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure NYHA Class II",
        "Heart Failure NYHA Class III",
        "Heart Failure NYHA Class IV"
      ],
      "interventions": [
        {
          "name": "We Chatt communication tool",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Usual/standard care",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 62,
      "start_date": "2023-09-14",
      "completion_date": "2024-06-07",
      "has_results": true,
      "last_update_posted_date": "2025-06-18",
      "last_synced_at": "2026-07-24T13:46:10.515Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05835063"
    },
    {
      "nct_id": "NCT02537769",
      "title": "Study of the Clinical Impact of Surgical Correction of Tricuspid Insufficiency in Implantable LVAD Patients",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tricuspid Regurgitation",
        "Heart Failure NYHA Class III",
        "Heart Failure NYHA Class IV"
      ],
      "interventions": [
        {
          "name": "Left ventricular assist device (LVAD)",
          "type": "DEVICE"
        },
        {
          "name": "Tricuspid Valve Repair (TVR)",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "PROCEDURE"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2015-08",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2021-02-23",
      "last_synced_at": "2026-07-24T13:46:10.515Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02537769"
    },
    {
      "nct_id": "NCT01920711",
      "title": "Efficacy and Safety of LCZ696 Compared to Valsartan, on Morbidity and Mortality in Heart Failure Patients With Preserved Ejection Fraction",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Heart Failure With Preserved Ejection Fraction"
      ],
      "interventions": [
        {
          "name": "LCZ696",
          "type": "DRUG"
        },
        {
          "name": "Valsartan",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 4822,
      "start_date": "2014-07-18",
      "completion_date": "2019-06-07",
      "has_results": true,
      "last_update_posted_date": "2020-09-29",
      "last_synced_at": "2026-07-24T13:46:10.515Z",
      "location_count": 110,
      "location_summary": "Huntsville, Alabama • Mobile, Alabama • Muscle Shoals, Alabama + 92 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Muscle Shoals",
          "state": "Alabama"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01920711"
    },
    {
      "nct_id": "NCT00957541",
      "title": "Evaluation of a Diagnostic Feature in a Cardiac Resynchronization Therapy (CRT) Device",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Congestive Heart Failure"
      ],
      "interventions": [
        {
          "name": "Paradym CRT + Physiological Diagnosis (PhD)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "ELA Medical, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 520,
      "start_date": "2009-09",
      "completion_date": "2013-04",
      "has_results": false,
      "last_update_posted_date": "2014-05-15",
      "last_synced_at": "2026-07-24T13:46:10.515Z",
      "location_count": 1,
      "location_summary": "Mesa, Arizona",
      "locations": [
        {
          "city": "Mesa",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00957541"
    },
    {
      "nct_id": "NCT03580759",
      "title": "Exergaming in Advanced HF With Multiple Chronic Conditions Prior to LVAD Implantation or Heart Transplant",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart-Assist Devices",
        "Heart Failure NYHA Class IV",
        "Exercise Training"
      ],
      "interventions": [
        {
          "name": "PREHAB",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Nebraska",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 2,
      "start_date": "2019-03-01",
      "completion_date": "2021-03-01",
      "has_results": false,
      "last_update_posted_date": "2023-09-29",
      "last_synced_at": "2026-07-24T13:46:10.515Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03580759"
    },
    {
      "nct_id": "NCT03727646",
      "title": "Nicotinamide Riboside in LVAD Recipients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Heart Failure，Congestive",
        "Heart Failure New York Heart Association Class IV",
        "Mitochondrial Alteration"
      ],
      "interventions": [
        {
          "name": "Nicotinamide riboside",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 5,
      "start_date": "2018-09-26",
      "completion_date": "2018-11-26",
      "has_results": true,
      "last_update_posted_date": "2024-09-20",
      "last_synced_at": "2026-07-24T13:46:10.515Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03727646"
    },
    {
      "nct_id": "NCT01381172",
      "title": "Evaluate Safety and Efficacy of the OPTIMIZER® System in Subjects With Moderate-to-Severe Heart Failure: FIX-HF-5C",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "NYHA Class III Heart Failure",
        "NYHA Class IV Heart Failure"
      ],
      "interventions": [
        {
          "name": "Optimizer System",
          "type": "DEVICE"
        },
        {
          "name": "No intervention: Optimal medical therapy",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "Impulse Dynamics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 160,
      "start_date": "2011-01",
      "completion_date": "2019-03-19",
      "has_results": true,
      "last_update_posted_date": "2021-09-17",
      "last_synced_at": "2026-07-24T13:46:10.515Z",
      "location_count": 32,
      "location_summary": "Glendale, Arizona • Mesa, Arizona • Phoenix, Arizona + 26 more",
      "locations": [
        {
          "city": "Glendale",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01381172"
    },
    {
      "nct_id": "NCT04237701",
      "title": "Real-Time Monitoring of Heart Failure Across the Yale New Haven Health System",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Heart Failure",
        "Heart Failure With Reduced Ejection Fraction",
        "Heart Failure With Preserved Ejection Fraction",
        "Heart Failure NYHA Class IV"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40000,
      "start_date": "2019-10-01",
      "completion_date": "2030-12-30",
      "has_results": false,
      "last_update_posted_date": "2026-03-05",
      "last_synced_at": "2026-07-24T13:46:10.515Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04237701"
    }
  ]
}