{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Cardiac+Resynchronization+Therapy",
    "query": {
      "condition": "Cardiac Resynchronization Therapy"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 145,
    "total_pages": 15,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Cardiac+Resynchronization+Therapy&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-26T08:26:35.930Z",
  "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": "NCT01399801",
      "title": "Optimizing Left Ventricular Lead To Improve Cardiac Output",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Ischemic Congestive Cardiomyopathy",
        "Dilated Cardiomyopathy",
        "Congestive Heart Failure"
      ],
      "interventions": [
        {
          "name": "Doppler flow measurement",
          "type": "PROCEDURE"
        },
        {
          "name": "standard implantation of the LV lead",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Ann Marie Chikowski",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 12,
      "start_date": "2010-12",
      "completion_date": "2014-09-25",
      "has_results": false,
      "last_update_posted_date": "2022-08-30",
      "last_synced_at": "2026-06-26T08:26:35.930Z",
      "location_count": 1,
      "location_summary": "Wynnewood, Pennsylvania",
      "locations": [
        {
          "city": "Wynnewood",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01399801"
    },
    {
      "nct_id": "NCT00585065",
      "title": "CRT Pilot Study for Children With Heart Failure",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Pediatric Heart Failure"
      ],
      "interventions": [
        {
          "name": "CRT device implant",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "1 Year to 18 Years"
      },
      "enrollment_count": 7,
      "start_date": "2006-01",
      "completion_date": "2016-01",
      "has_results": false,
      "last_update_posted_date": "2023-05-11",
      "last_synced_at": "2026-06-26T08:26:35.930Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00585065"
    },
    {
      "nct_id": "NCT02104583",
      "title": "Evaluating Ventricular Arrhythmia in Subjects With Implantable Cardioverter Defibrillator or Cardiac Resynchronization Therapy-Defibrillator",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Ventricular Arrhythmia"
      ],
      "interventions": [
        {
          "name": "Eleclazine",
          "type": "DRUG"
        },
        {
          "name": "Placebo to match eleclazine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Gilead Sciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 313,
      "start_date": "2014-09",
      "completion_date": "2016-10",
      "has_results": true,
      "last_update_posted_date": "2019-04-09",
      "last_synced_at": "2026-06-26T08:26:35.930Z",
      "location_count": 37,
      "location_summary": "Mesa, Arizona • Long Beach, California • Los Angeles, California + 32 more",
      "locations": [
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Newport Beach",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02104583"
    },
    {
      "nct_id": "NCT00683696",
      "title": "Echocardiography Guided Cardiac Resynchronization Therapy (EchoCRT)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Heart Failure",
        "Ventricular Dyssynchrony"
      ],
      "interventions": [
        {
          "name": "Implantable Cardioverter Defibrillator with Cardiac Resynchronization Therapy (BIOTRONIK Lumax HF-T CRT-D)",
          "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": 1680,
      "start_date": "2008-08",
      "completion_date": "2013-03",
      "has_results": true,
      "last_update_posted_date": "2018-01-17",
      "last_synced_at": "2026-06-26T08:26:35.930Z",
      "location_count": 62,
      "location_summary": "Concord, California • Los Angeles, California • Rancho Mirage, California + 46 more",
      "locations": [
        {
          "city": "Concord",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Rancho Mirage",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Ventura",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00683696"
    },
    {
      "nct_id": "NCT00433043",
      "title": "BOAT: Beta Blocker Uptitration With OptiVol After Cardiac Resynchronization Therapy (CRT)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Congestive Heart Failure"
      ],
      "interventions": [
        {
          "name": "Beta blocker (carvedilol or metoprolol succinate)",
          "type": "DRUG"
        },
        {
          "name": "CRT (cardiac resynchronization therapy)",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "St. Luke's-Roosevelt Hospital Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 2,
      "start_date": "2007-01",
      "completion_date": "2009-05",
      "has_results": false,
      "last_update_posted_date": "2015-10-30",
      "last_synced_at": "2026-06-26T08:26:35.930Z",
      "location_count": 3,
      "location_summary": "New York, New York • Rochester, New York • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00433043"
    },
    {
      "nct_id": "NCT04763460",
      "title": "Effects of CRT Optimization as Assessed by Cardiac MR",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure, Systolic"
      ],
      "interventions": [
        {
          "name": "Programming of CRT device settings",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Minneapolis Heart Institute Foundation",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 0,
      "start_date": "2023-06-01",
      "completion_date": "2026-03-02",
      "has_results": false,
      "last_update_posted_date": "2026-03-04",
      "last_synced_at": "2026-06-26T08:26:35.930Z",
      "location_count": 2,
      "location_summary": "Minneapolis, Minnesota • Saint Paul, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Saint Paul",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04763460"
    },
    {
      "nct_id": "NCT00370474",
      "title": "MAGNET CRT Feasibility - Efficiency of LV Lead Placement Comparing Conventional vs. Magnetic Guidance",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Cardiac Resynchronization Therapy"
      ],
      "interventions": [
        {
          "name": "Bi-ventricular lead placement",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Stereotaxis",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 27,
      "start_date": "2006-06",
      "completion_date": "2006-09",
      "has_results": false,
      "last_update_posted_date": "2007-06-18",
      "last_synced_at": "2026-06-26T08:26:35.930Z",
      "location_count": 6,
      "location_summary": "Gainesville, Georgia • Lexington, Kentucky • Boston, Massachusetts + 3 more",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Georgia"
        },
        {
          "city": "Lexington",
          "state": "Kentucky"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Memphis",
          "state": "Tennessee"
        },
        {
          "city": "Tyler",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00370474"
    },
    {
      "nct_id": "NCT00990665",
      "title": "Promote Q Cardiac Resynchronization Therapy Defibrillator (CRT-D) and Quartet Left Ventricular Heart Lead Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "CRT-D and LV lead (Quartet™ lead and Promote Q® device 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": 178,
      "start_date": "2009-09",
      "completion_date": "2012-07",
      "has_results": true,
      "last_update_posted_date": "2019-02-27",
      "last_synced_at": "2026-06-26T08:26:35.930Z",
      "location_count": 24,
      "location_summary": "Birmingham, Alabama • Little Rock, Arkansas • Glendale, California + 20 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Glendale",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00990665"
    },
    {
      "nct_id": "NCT02071173",
      "title": "Evaluation of ACUITY™ X4 Quadripolar Coronary Venous Leads and RELIANCE™ 4-FRONT Defibrillation Leads",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiac Resynchronization Therapy"
      ],
      "interventions": [
        {
          "name": "ACUITY X4 quadripolar coronary venous lead and RELIANCE 4-FRONT defibrillation lead",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Boston Scientific Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2244,
      "start_date": "2014-04-14",
      "completion_date": "2020-10-06",
      "has_results": true,
      "last_update_posted_date": "2021-01-07",
      "last_synced_at": "2026-06-26T08:26:35.930Z",
      "location_count": 96,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama • Anchorage, Alaska + 85 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02071173"
    },
    {
      "nct_id": "NCT01871090",
      "title": "Remote Device Interrogation In The Emergency Department",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Disease",
        "Cardiovascular Disease",
        "Heart Failure",
        "Arrhythmias, Cardiac"
      ],
      "interventions": [
        {
          "name": "Unpaired remote monitoring transmitter",
          "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": 99,
      "start_date": "2013-09",
      "completion_date": "2015-07",
      "has_results": true,
      "last_update_posted_date": "2019-02-15",
      "last_synced_at": "2026-06-26T08:26:35.930Z",
      "location_count": 1,
      "location_summary": "Zanesville, Ohio",
      "locations": [
        {
          "city": "Zanesville",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01871090"
    }
  ]
}