{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=NYHA+Class+III+Heart+Failure",
    "query": {
      "condition": "NYHA Class III Heart Failure"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 54,
    "total_pages": 6,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=NYHA+Class+III+Heart+Failure&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T08:45:42.485Z",
  "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": "NCT02656329",
      "title": "International Study to Determine if AdreView Heart Function Scan Can be Used to Identify Patients With Mild or Moderate Heart Failure (HF) That Benefit From Implanted Medical Device",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Iobenguane I -123 Injection",
          "type": "DRUG"
        },
        {
          "name": "Implantable Cardioverter Defibrillator",
          "type": "DEVICE"
        },
        {
          "name": "Thyroid blocking",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "GE Healthcare",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 395,
      "start_date": "2015-12-30",
      "completion_date": "2018-05-04",
      "has_results": true,
      "last_update_posted_date": "2019-05-22",
      "last_synced_at": "2026-05-22T08:45:42.485Z",
      "location_count": 29,
      "location_summary": "Birmingham, Alabama • Bakersfield, California • La Mesa, California + 24 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "La Mesa",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "West Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02656329"
    },
    {
      "nct_id": "NCT04452149",
      "title": "Algorithm Using LINQ Sensors for Evaluation And Treatment of Heart Failure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure NYHA Class II",
        "Heart Failure NYHA Class III"
      ],
      "interventions": [
        {
          "name": "Reveal LINQ™ Insertable Cardiac Monitor with investigational ALLEVIATE-HF RAMware download",
          "type": "DEVICE"
        },
        {
          "name": "Medication intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "Medtronic Cardiac Rhythm and Heart Failure",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 826,
      "start_date": "2020-09-03",
      "completion_date": "2025-06-02",
      "has_results": false,
      "last_update_posted_date": "2026-01-13",
      "last_synced_at": "2026-05-22T08:45:42.485Z",
      "location_count": 53,
      "location_summary": "Mesa, Arizona • Jonesboro, Arkansas • Mission Viejo, California + 47 more",
      "locations": [
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Jonesboro",
          "state": "Arkansas"
        },
        {
          "city": "Mission Viejo",
          "state": "California"
        },
        {
          "city": "Oxnard",
          "state": "California"
        },
        {
          "city": "Stockton",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04452149"
    },
    {
      "nct_id": "NCT03132441",
      "title": "Cardiac Rehab for Advanced Heart Failure-LVAD Candidates",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Strength Training for Frailty",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "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": 0,
      "start_date": "2017-04",
      "completion_date": "2018-02",
      "has_results": false,
      "last_update_posted_date": "2018-06-26",
      "last_synced_at": "2026-05-22T08:45:42.485Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03132441"
    },
    {
      "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": "2026-05-22T08:45:42.485Z",
      "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": "NCT03623165",
      "title": "PRODIGY Registry in NYHA Class III Heart Failure Patients",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Heart Failure NYHA Class III"
      ],
      "interventions": [
        {
          "name": "Cordella™ Heart Failure System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Endotronix, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 7,
      "start_date": "2018-08-01",
      "completion_date": "2019-08-15",
      "has_results": false,
      "last_update_posted_date": "2019-08-19",
      "last_synced_at": "2026-05-22T08:45:42.485Z",
      "location_count": 4,
      "location_summary": "Los Angeles, California • San Francisco, California • Lebanon, New Hampshire + 1 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Lebanon",
          "state": "New Hampshire"
        },
        {
          "city": "Gonzales",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03623165"
    },
    {
      "nct_id": "NCT02939053",
      "title": "Correlation of SOZO BIS Measures With CardioMEMS PA Pressure",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "NYHA Class III Heart Failure"
      ],
      "interventions": [
        {
          "name": "SOZO",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "ImpediMed Limited",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3,
      "start_date": "2017-08-29",
      "completion_date": "2019-06-25",
      "has_results": false,
      "last_update_posted_date": "2019-07-08",
      "last_synced_at": "2026-05-22T08:45:42.485Z",
      "location_count": 2,
      "location_summary": "Rochester, Minnesota • Lancaster, Pennsylvania",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        },
        {
          "city": "Lancaster",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02939053"
    },
    {
      "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": "2026-05-22T08:45:42.485Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05835063"
    },
    {
      "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": "2026-05-22T08:45:42.485Z",
      "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": "NCT02857231",
      "title": "Bioimpedance Spectroscopy Compared to CardioMEMS™",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "NYHA Class III Heart Failure"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "ImpediMed Limited",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 16,
      "start_date": "2017-08-07",
      "completion_date": "2018-10-09",
      "has_results": false,
      "last_update_posted_date": "2019-07-08",
      "last_synced_at": "2026-05-22T08:45:42.485Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02857231"
    },
    {
      "nct_id": "NCT00267098",
      "title": "Biventricular Versus Right Ventricular Pacing in Heart Failure Patients With Atrioventricular Block (BLOCK HF)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Atrioventricular Block",
        "Heart Diseases"
      ],
      "interventions": [
        {
          "name": "Cardiac Resynchronization Therapy (CRT)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Medtronic Cardiac Rhythm and Heart Failure",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 918,
      "start_date": "2003-12",
      "completion_date": "2013-03",
      "has_results": true,
      "last_update_posted_date": "2014-03-26",
      "last_synced_at": "2026-05-22T08:45:42.485Z",
      "location_count": 51,
      "location_summary": "Anchorage, Alaska • Peoria, Arizona • Little Rock, Arkansas + 48 more",
      "locations": [
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Peoria",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Glendale",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00267098"
    }
  ]
}