{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Heart+Failure%2C+Reduced+Ejection+Fraction&page=2",
    "query": {
      "condition": "Heart Failure, Reduced Ejection Fraction",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Heart+Failure%2C+Reduced+Ejection+Fraction&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-07-24T08:30:56.137Z",
  "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": "NCT07037459",
      "title": "Maridebart Cafraglutide in Heart Failure With Preserved or Mildly Reduced Ejection Fraction and Obesity",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Heart Failure With Preserved Ejection Fraction",
        "Heart Failure With Mildly Reduced Ejection Fraction",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Maridebart cafraglutide",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Amgen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 5056,
      "start_date": "2025-06-25",
      "completion_date": "2030-09-29",
      "has_results": false,
      "last_update_posted_date": "2026-07-02",
      "last_synced_at": "2026-07-24T08:30:56.137Z",
      "location_count": 111,
      "location_summary": "Birmingham, Alabama • Dothan, Alabama • Fairhope, Alabama + 99 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Dothan",
          "state": "Alabama"
        },
        {
          "city": "Fairhope",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07037459"
    },
    {
      "nct_id": "NCT05223751",
      "title": "Parasympathetic Augmentation Via Respiratory Training for Patients With Systolic Heart Failure",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Diastolic Heart Failure"
      ],
      "interventions": [
        {
          "name": "Meo Health Breathing and humming exercises",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Lancaster General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 65,
      "start_date": "2022-02-07",
      "completion_date": "2025-09-12",
      "has_results": false,
      "last_update_posted_date": "2025-10-23",
      "last_synced_at": "2026-07-24T08:30:56.137Z",
      "location_count": 1,
      "location_summary": "Lancaster, Pennsylvania",
      "locations": [
        {
          "city": "Lancaster",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05223751"
    },
    {
      "nct_id": "NCT03099889",
      "title": "WHISH-2-Prevent Heart Failure",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Physical Activity",
        "Heart Failure",
        "Heart Failure With Reduced Ejection Fraction",
        "Heart Failure With Normal Ejection Fraction",
        "Strength Training",
        "Elderly",
        "Women"
      ],
      "interventions": [
        {
          "name": "Physical Activity",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Memorial Hospital of Rhode Island",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "66 Years",
        "maximum_age": "102 Years",
        "sex": "FEMALE",
        "summary": "66 Years to 102 Years · Female only"
      },
      "enrollment_count": 49936,
      "start_date": "2015-04-15",
      "completion_date": "2021-07-01",
      "has_results": false,
      "last_update_posted_date": "2019-05-07",
      "last_synced_at": "2026-07-24T08:30:56.137Z",
      "location_count": 1,
      "location_summary": "Pawtucket, Rhode Island",
      "locations": [
        {
          "city": "Pawtucket",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03099889"
    },
    {
      "nct_id": "NCT05230732",
      "title": "Neuromodulation of Inflammation and Endothelial Function",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Systolic Heart Failure"
      ],
      "interventions": [
        {
          "name": "neuromodulation device",
          "type": "DEVICE"
        },
        {
          "name": "SHAM",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Oklahoma",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 158,
      "start_date": "2022-09-01",
      "completion_date": "2026-02-27",
      "has_results": false,
      "last_update_posted_date": "2025-04-15",
      "last_synced_at": "2026-07-24T08:30:56.137Z",
      "location_count": 1,
      "location_summary": "Oklahoma City, Oklahoma",
      "locations": [
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05230732"
    },
    {
      "nct_id": "NCT03903107",
      "title": "The Fluoroless-CSP Trial Using Electroanatomic Mapping",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sinus Node Dysfunction",
        "Heart Block AV",
        "LBBB",
        "Heart Failure, Systolic"
      ],
      "interventions": [
        {
          "name": "Conventional fluoroscopy guided Conduction System Pacing(CSP)",
          "type": "PROCEDURE"
        },
        {
          "name": "Electroanatomic Mapping (Fluoroless) guided Conduction System Pacing(CSP)",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Rush University 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": 2,
      "start_date": "2020-10-26",
      "completion_date": "2024-09-30",
      "has_results": false,
      "last_update_posted_date": "2025-02-28",
      "last_synced_at": "2026-07-24T08:30:56.137Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03903107"
    },
    {
      "nct_id": "NCT06699056",
      "title": "AI-Enabled Direct-from-ECG Ejection Fraction (EF) Severity Assessment Using COR ECG Wearable Monitor",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Ventricular Ejection Fraction",
        "LVF",
        "LV Dysfunction",
        "Atrial Enlargement",
        "Conduction Defect",
        "Heart Failure",
        "Valvular Heart Disease",
        "Ischemic Heart Disease",
        "Cardiotoxicity",
        "Myocardial Infarction",
        "Dilated Cardiomyopathy",
        "HFrEF - Heart Failure With Reduced Ejection Fraction",
        "HFpEF - Heart Failure With Preserved Ejection Fraction",
        "Syncope",
        "Remodeling, Cardiac"
      ],
      "interventions": [
        {
          "name": "15-minutes of sitting during COR ECG Acquistion",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Peerbridge Health, Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2000,
      "start_date": "2024-11-21",
      "completion_date": "2027-11-15",
      "has_results": false,
      "last_update_posted_date": "2026-06-01",
      "last_synced_at": "2026-07-24T08:30:56.137Z",
      "location_count": 8,
      "location_summary": "Orange, California • Pasadena, California • Detroit, Michigan + 5 more",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Pasadena",
          "state": "California"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "Hackensack",
          "state": "New Jersey"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06699056"
    },
    {
      "nct_id": "NCT05425459",
      "title": "RESPONDER-HF Trial",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure",
        "Heart Failure, Diastolic"
      ],
      "interventions": [
        {
          "name": "Corvia Atrial Shunt System / IASD System II",
          "type": "DEVICE"
        },
        {
          "name": "Intra-cardiac echocardiography (ICE), or transesophageal echocardiography (TEE)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "Corvia Medical",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 750,
      "start_date": "2022-11-17",
      "completion_date": "2031-03",
      "has_results": false,
      "last_update_posted_date": "2026-03-18",
      "last_synced_at": "2026-07-24T08:30:56.137Z",
      "location_count": 33,
      "location_summary": "Phoenix, Arizona • La Jolla, California • Long Beach, California + 28 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Newark",
          "state": "Delaware"
        },
        {
          "city": "Hollywood",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05425459"
    },
    {
      "nct_id": "NCT05195931",
      "title": "Cardiac Output in Heart Failure Patients With Mechanical Pumps",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Heart Failure, Systolic",
        "Mechanical Circulatory Support",
        "Cardiovascular Hemodynamics"
      ],
      "interventions": [
        {
          "name": "preload challenge",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "afterload challenge",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "contractility assessment",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 7,
      "start_date": "2021-06-08",
      "completion_date": "2022-08-25",
      "has_results": false,
      "last_update_posted_date": "2023-05-19",
      "last_synced_at": "2026-07-24T08:30:56.137Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05195931"
    },
    {
      "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": "2026-07-24T08:30:56.137Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04237701"
    },
    {
      "nct_id": "NCT04327596",
      "title": "Radiofrequency (RF) Ablation for Atrial Fibrillation (AF) in Patients With Heart Failure With Preserved Ejection Fraction",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure With Preserved Ejection Fraction"
      ],
      "interventions": [
        {
          "name": "RF ablation of AF using CARTO 3 and a Thermocool ST SF ablation catheter",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of Rochester",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 2,
      "start_date": "2021-01-25",
      "completion_date": "2021-09-21",
      "has_results": false,
      "last_update_posted_date": "2022-02-23",
      "last_synced_at": "2026-07-24T08:30:56.137Z",
      "location_count": 2,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04327596"
    }
  ]
}