{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=congestive+heart+failure+patients&page=23",
    "query": {
      "intervention": "congestive heart failure patients",
      "page": 23
    },
    "page_size": 10
  },
  "pagination": {
    "page": 23,
    "page_size": 10,
    "total_count": 1229,
    "total_pages": 123,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=congestive+heart+failure+patients&page=24&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=congestive+heart+failure+patients&page=22&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-15T05:15:12.943Z",
  "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": "NCT00057057",
      "title": "Telephone Intervention in Heart Failure Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure, Congestive",
        "Cardiomyopathy"
      ],
      "interventions": [
        {
          "name": "Telephone Care",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "US Department of Veterans Affairs",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 438,
      "start_date": null,
      "completion_date": "2005-03",
      "has_results": false,
      "last_update_posted_date": "2015-04-07",
      "last_synced_at": "2026-10-15T05:15:12.943Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00057057"
    },
    {
      "nct_id": "NCT03775421",
      "title": "An Upcoming Clinical Study to Measure the Safety and Impact of a Drug Called Macitentan in Teenage and Adult Fontan Patients.",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Congenital Heart Disease With Fontan Circulation"
      ],
      "interventions": [
        {
          "name": "macitentan 10 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Actelion",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 112,
      "start_date": "2019-04-11",
      "completion_date": "2022-01-18",
      "has_results": true,
      "last_update_posted_date": "2023-03-07",
      "last_synced_at": "2026-10-15T05:15:12.943Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts • Spokane, Washington",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Spokane",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03775421"
    },
    {
      "nct_id": "NCT06029452",
      "title": "A Retrospective Validation Study To Identify Chart-Based Clinical Diagnosis Of Wild-Type Transthyretin Amyloid Cardiomyopathy (Attrwt-CM) And Non-Amyloid Heart Failure Among Patients With Heart Failure (HF).",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "ATTR-CM"
      ],
      "interventions": [
        {
          "name": "Machine learning algorithm",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 558,
      "start_date": "2023-09-01",
      "completion_date": "2023-11-14",
      "has_results": true,
      "last_update_posted_date": "2025-01-03",
      "last_synced_at": "2026-10-15T05:15:12.943Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06029452"
    },
    {
      "nct_id": "NCT03066804",
      "title": "A Randomized, Double-blind Controlled Study Comparing LCZ696 to Medical Therapy for Comorbidities in HFpEF Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Heart Failure With Preserved Ejection Fraction"
      ],
      "interventions": [
        {
          "name": "sacubitril/valsartan",
          "type": "DRUG"
        },
        {
          "name": "Enalapril",
          "type": "DRUG"
        },
        {
          "name": "Valsartan",
          "type": "DRUG"
        },
        {
          "name": "Placebo to match sacubitril/valsartan",
          "type": "DRUG"
        },
        {
          "name": "Placebo to match enalapril",
          "type": "DRUG"
        },
        {
          "name": "Placebo to match valsartan",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "45 Years and older"
      },
      "enrollment_count": 2572,
      "start_date": "2017-08-22",
      "completion_date": "2019-10-28",
      "has_results": true,
      "last_update_posted_date": "2021-10-11",
      "last_synced_at": "2026-10-15T05:15:12.943Z",
      "location_count": 32,
      "location_summary": "Andalusia, Alabama • Mobile, Alabama • Beverly Hills, California + 29 more",
      "locations": [
        {
          "city": "Andalusia",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Santa Ana",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03066804"
    },
    {
      "nct_id": "NCT04791826",
      "title": "Electronic Alerts for Heart Failure Prevention in Diabetes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure",
        "Diabetes Mellitus, Type 2"
      ],
      "interventions": [
        {
          "name": "On-screen electronic alert",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1524,
      "start_date": "2021-03-25",
      "completion_date": "2024-05-07",
      "has_results": false,
      "last_update_posted_date": "2024-06-06",
      "last_synced_at": "2026-10-15T05:15:12.943Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04791826"
    },
    {
      "nct_id": "NCT01446536",
      "title": "Effect of Quality Improvement Tools in Congestive Heart Failure (CHF)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Congestive Heart Failure"
      ],
      "interventions": [
        {
          "name": "Checklist cohort",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "St. Joseph Mercy Oakland Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 96,
      "start_date": "2008-08",
      "completion_date": "2010-06",
      "has_results": false,
      "last_update_posted_date": "2012-03-20",
      "last_synced_at": "2026-10-15T05:15:12.943Z",
      "location_count": 1,
      "location_summary": "Pontiac, Michigan",
      "locations": [
        {
          "city": "Pontiac",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01446536"
    },
    {
      "nct_id": "NCT00810264",
      "title": "Post Approval Registry of Corox OTW, Endocardial, Left Ventricular Steroid Lead, Bipolar",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Congestive Heart Failure"
      ],
      "interventions": [
        {
          "name": "CRT Therapy - LV Lead Registry",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Biotronik, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2499,
      "start_date": "2008-12",
      "completion_date": "2018-11-02",
      "has_results": true,
      "last_update_posted_date": "2019-11-29",
      "last_synced_at": "2026-10-15T05:15:12.943Z",
      "location_count": 86,
      "location_summary": "Birmingham, Alabama • Glendale, Arizona • Mesa, Arizona + 83 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Glendale",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00810264"
    },
    {
      "nct_id": "NCT04721314",
      "title": "Personalized Pacing: A New Paradigm for Patients With Diastolic Dysfunction or Heart Failure With Preserved Ejection Fraction",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pacemaker",
        "Diastolic Dysfunction",
        "Diastolic Heart Failure"
      ],
      "interventions": [
        {
          "name": "Adjustment of lower rate limit",
          "type": "DEVICE"
        },
        {
          "name": "Maintenance of lower rate limit",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Vermont",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 123,
      "start_date": "2019-07-17",
      "completion_date": "2021-12-05",
      "has_results": false,
      "last_update_posted_date": "2022-02-09",
      "last_synced_at": "2026-10-15T05:15:12.943Z",
      "location_count": 1,
      "location_summary": "Burlington, Vermont",
      "locations": [
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04721314"
    },
    {
      "nct_id": "NCT06218199",
      "title": "Diuretics vs. Afterload Reduction for Treatment of HeartLogic Alerts",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Heart Failure, Congestive"
      ],
      "interventions": [
        {
          "name": "Furosemide",
          "type": "DRUG"
        },
        {
          "name": "Torsemide",
          "type": "DRUG"
        },
        {
          "name": "Bumetanide",
          "type": "DRUG"
        },
        {
          "name": "sacubitril/valsartan",
          "type": "DRUG"
        },
        {
          "name": "Hydralazine",
          "type": "DRUG"
        },
        {
          "name": "Isosorbide Dinitrate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Heart Center Research, LLC",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 80,
      "start_date": "2021-07-08",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2024-01-29",
      "last_synced_at": "2026-10-15T05:15:12.943Z",
      "location_count": 1,
      "location_summary": "Huntsville, Alabama",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06218199"
    },
    {
      "nct_id": "NCT00586833",
      "title": "Heart Failure and a Preserved Ejection Fraction",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "O2 consumption max bike test",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "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": 51,
      "start_date": "2007-04",
      "completion_date": "2009-06",
      "has_results": false,
      "last_update_posted_date": "2010-10-14",
      "last_synced_at": "2026-10-15T05:15:12.943Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00586833"
    }
  ]
}