{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=NYHA+Class+II-IV+Heart+Failure",
    "query": {
      "condition": "NYHA Class II-IV Heart Failure"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 11,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=NYHA+Class+II-IV+Heart+Failure&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-27T03:28:38.017Z",
  "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": "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": "2026-06-27T03:28:38.017Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05835063"
    },
    {
      "nct_id": "NCT01814319",
      "title": "Repurposing Probenecid as a Positive Inotrope for the Treatment of Heart Failure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Systolic Heart Failure"
      ],
      "interventions": [
        {
          "name": "Probenecid 1 gr oral twice daily",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Cincinnati",
      "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": 20,
      "start_date": "2013-03",
      "completion_date": "2015-06",
      "has_results": false,
      "last_update_posted_date": "2015-08-26",
      "last_synced_at": "2026-06-27T03:28:38.017Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01814319"
    },
    {
      "nct_id": "NCT00283361",
      "title": "ZP120 Add-on to Furosemide in Treatment of Acute or Sub-Acute Decompensated Heart Failure",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Heart Failure, Congestive"
      ],
      "interventions": [
        {
          "name": "ZP120",
          "type": "DRUG"
        },
        {
          "name": "I.v. catherization",
          "type": "PROCEDURE"
        },
        {
          "name": "6-minutes walk performance",
          "type": "PROCEDURE"
        },
        {
          "name": "Dyspnea severity assessment",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Blood sampling for laboratory tests",
          "type": "PROCEDURE"
        },
        {
          "name": "ECG",
          "type": "PROCEDURE"
        },
        {
          "name": "Physical examination",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "BEHAVIORAL"
      ],
      "sponsor": "Zealand Pharma",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 130,
      "start_date": "2006-01",
      "completion_date": "2006-12",
      "has_results": false,
      "last_update_posted_date": "2007-02-28",
      "last_synced_at": "2026-06-27T03:28:38.017Z",
      "location_count": 22,
      "location_summary": "Los Angeles, California • San Diego, California • San Francisco, California + 17 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00283361"
    },
    {
      "nct_id": "NCT00007683",
      "title": "Warfarin and Antiplatelet Therapy in Chronic Heart Failure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Warfarin titrated to an INR of 2.5-3.0",
          "type": "DRUG"
        },
        {
          "name": "Aspirin",
          "type": "DRUG"
        },
        {
          "name": "Clopidogrel 75",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "US Department of Veterans Affairs",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1587,
      "start_date": "1998-10",
      "completion_date": "2004-12",
      "has_results": false,
      "last_update_posted_date": "2011-06-16",
      "last_synced_at": "2026-06-27T03:28:38.017Z",
      "location_count": 79,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 76 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "No. Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Downey",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00007683"
    },
    {
      "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": "2026-06-27T03:28:38.017Z",
      "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": "NCT06270875",
      "title": "Addressing Pain Through Navigator-Led Palliative Care Optimized for Heart Failure (ADAPT-HF)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Illness",
        "NYHA Class II-IV Heart Failure"
      ],
      "interventions": [
        {
          "name": "ADAPT HF",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "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": "2024-10-02",
      "completion_date": "2026-05-01",
      "has_results": false,
      "last_update_posted_date": "2026-05-14",
      "last_synced_at": "2026-06-27T03:28:38.017Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06270875"
    },
    {
      "nct_id": "NCT03387813",
      "title": "Hemodynamic-GUIDEd Management of Heart Failure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure",
        "Heart Failure, Systolic",
        "Heart Failure, Diastolic",
        "Heart Failure NYHA Class II",
        "Heart Failure NYHA Class III",
        "Heart Failure NYHA Class IV",
        "Heart Failure，Congestive",
        "Heart Failure With Reduced Ejection Fraction",
        "Heart Failure With Normal Ejection Fraction",
        "Heart Failure; With Decompensation"
      ],
      "interventions": [
        {
          "name": "CardioMEMS™ HF System",
          "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": 2358,
      "start_date": "2018-03-15",
      "completion_date": "2023-05-17",
      "has_results": true,
      "last_update_posted_date": "2025-08-07",
      "last_synced_at": "2026-06-27T03:28:38.017Z",
      "location_count": 125,
      "location_summary": "Phoenix, Arizona • Tucson, Arizona • Fayetteville, Arkansas + 100 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Fayetteville",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03387813"
    },
    {
      "nct_id": "NCT00853658",
      "title": "Efficacy and Safety of Aliskiren and Aliskiren/Enalapril Combination on Morbidity-mortality in Patients With Chronic Heart Failure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Chronic Heart Failure"
      ],
      "interventions": [
        {
          "name": "Enalapril",
          "type": "DRUG"
        },
        {
          "name": "Aliskiren",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 7064,
      "start_date": "2009-03",
      "completion_date": "2015-10",
      "has_results": true,
      "last_update_posted_date": "2016-11-25",
      "last_synced_at": "2026-06-27T03:28:38.017Z",
      "location_count": 58,
      "location_summary": "Huntsville, Alabama • Mobile, Alabama • Tucson, Arizona + 51 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Hot Springs",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00853658"
    },
    {
      "nct_id": "NCT05336175",
      "title": "Biomarker Study: Heart Failure Patients at Risk",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Heart Failure NYHA Class II",
        "Heart Failure NYHA Class III",
        "Heart Failure NYHA Class IV"
      ],
      "interventions": [
        {
          "name": "Angiotensin 1-7",
          "type": "DRUG"
        },
        {
          "name": "Saline solution",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Arizona",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "45 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2022-04",
      "completion_date": "2023-12",
      "has_results": false,
      "last_update_posted_date": "2022-04-20",
      "last_synced_at": "2026-06-27T03:28:38.017Z",
      "location_count": 2,
      "location_summary": "Phoenix, Arizona • Tucson, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05336175"
    },
    {
      "nct_id": "NCT01452802",
      "title": "Risk Assessment and Comparative Effectiveness of Left Ventricular Assist Device (LVAD) and Medical Management",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "HM II (HeartMate II LVAD)",
          "type": "DEVICE"
        },
        {
          "name": "OMM (Optimal Medical Management)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "DRUG"
      ],
      "sponsor": "Abbott Medical Devices",
      "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": 200,
      "start_date": "2011-10",
      "completion_date": "2016-06",
      "has_results": false,
      "last_update_posted_date": "2022-06-24",
      "last_synced_at": "2026-06-27T03:28:38.017Z",
      "location_count": 52,
      "location_summary": "Little Rock, Arkansas • Beverly Hills, California • Los Angeles, California + 41 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01452802"
    }
  ]
}