{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=CRT+Pacemaker&page=2",
    "query": {
      "intervention": "CRT Pacemaker",
      "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?intervention=CRT+Pacemaker&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-22T13:04:06.158Z",
  "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": "NCT03420833",
      "title": "Metabolic Mapping and Cardiac Resynchronization",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Cardiac resynchronization therapy pacemaker (CRT-P)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Yong-Mei Cha",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 82,
      "start_date": "2018-08-20",
      "completion_date": "2023-12-19",
      "has_results": true,
      "last_update_posted_date": "2025-01-23",
      "last_synced_at": "2026-09-22T13:04:06.158Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03420833"
    },
    {
      "nct_id": "NCT00180258",
      "title": "Comparison of Medical Therapy, Pacing and Defibrillation in Heart Failure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Congestive Heart Failure"
      ],
      "interventions": [
        {
          "name": "Cardiac Resynchronization Therapy with & without defibrillator",
          "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": 2200,
      "start_date": "2000-01",
      "completion_date": "2002-12",
      "has_results": false,
      "last_update_posted_date": "2007-01-25",
      "last_synced_at": "2026-09-22T13:04:06.158Z",
      "location_count": 1,
      "location_summary": "Saint Paul, Minnesota",
      "locations": [
        {
          "city": "Saint Paul",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00180258"
    },
    {
      "nct_id": "NCT00674128",
      "title": "Comparison of Cyanoacrylate Tissue Adhesive and Suture for Closure of Cardiac Device Pockets",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiovascular Disease"
      ],
      "interventions": [
        {
          "name": "Cyanoacrylate tissue adhesive (Dermabond)",
          "type": "DEVICE"
        },
        {
          "name": "Polyglactin 910 suture (Vicryl)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 103,
      "start_date": "2008-05",
      "completion_date": "2009-05",
      "has_results": true,
      "last_update_posted_date": "2010-12-29",
      "last_synced_at": "2026-09-22T13:04:06.158Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00674128"
    },
    {
      "nct_id": "NCT04831125",
      "title": "Conduction System Pacing International Registry (CONSPIRE)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Bradyarrhythmia",
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Data collection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 383,
      "start_date": "2021-04-04",
      "completion_date": "2026-02-05",
      "has_results": false,
      "last_update_posted_date": "2026-03-03",
      "last_synced_at": "2026-09-22T13:04:06.158Z",
      "location_count": 5,
      "location_summary": "Tucson, Arizona • Chicago, Illinois • New York, New York + 2 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Wilkes-Barre",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04831125"
    },
    {
      "nct_id": "NCT00356057",
      "title": "Investigational Device Exemption (IDE) Study for the Approval of Closed Loop Stimulation (CLS) and Cardiac Resyncronization Pacing Therapies (CRT) for the Treatment of Atrial Fibrillation (AF) With Ablate and Pace",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Atrial Fibrillation",
        "Congestive Heart Failure"
      ],
      "interventions": [
        {
          "name": "Protos DR/CLS and Stratos LV CRT pacemakers",
          "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": 153,
      "start_date": "2004-12",
      "completion_date": "2008-06",
      "has_results": true,
      "last_update_posted_date": "2018-02-27",
      "last_synced_at": "2026-09-22T13:04:06.158Z",
      "location_count": 10,
      "location_summary": "Birmingham, Alabama • Lake Charles, Louisiana • Boston, Massachusetts + 7 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Lake Charles",
          "state": "Louisiana"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Lapeer",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00356057"
    },
    {
      "nct_id": "NCT01043705",
      "title": "TYRX™ Envelope for Prevention of Infection Following Replacement With a CRT or ICD",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cardiac Implantable Electronic Device Infection"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "TYRX, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1262,
      "start_date": "2010-01",
      "completion_date": "2015-05",
      "has_results": true,
      "last_update_posted_date": "2015-12-24",
      "last_synced_at": "2026-09-22T13:04:06.158Z",
      "location_count": 52,
      "location_summary": "Birmingham, Alabama • Decatur, Alabama • Florence, Alabama + 44 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Decatur",
          "state": "Alabama"
        },
        {
          "city": "Florence",
          "state": "Alabama"
        },
        {
          "city": "Gadsden",
          "state": "Alabama"
        },
        {
          "city": "Scottsdate",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01043705"
    },
    {
      "nct_id": "NCT00205192",
      "title": "Optimizing Cardiac Resynchronization",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Cardiac resynchronization pacing",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 100,
      "start_date": "2004-06",
      "completion_date": "2011-12",
      "has_results": false,
      "last_update_posted_date": "2012-08-29",
      "last_synced_at": "2026-09-22T13:04:06.158Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00205192"
    },
    {
      "nct_id": "NCT05650658",
      "title": "Left vs Left Randomized Clinical Trial",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure",
        "Heart Failure With Reduced Ejection Fraction",
        "AV Block",
        "LBBB",
        "RBBB",
        "Intraventricular Conduction Delay",
        "Pacing-Induced Cardiomyopathy"
      ],
      "interventions": [
        {
          "name": "His/LBBP",
          "type": "DEVICE"
        },
        {
          "name": "BiVP",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Baylor College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2136,
      "start_date": "2023-09-13",
      "completion_date": "2029-06-30",
      "has_results": false,
      "last_update_posted_date": "2025-10-02",
      "last_synced_at": "2026-09-22T13:04:06.158Z",
      "location_count": 57,
      "location_summary": "Gilbert, Arizona • Tucson, Arizona • Little Rock, Arkansas + 46 more",
      "locations": [
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05650658"
    },
    {
      "nct_id": "NCT00698139",
      "title": "Cardiovascular and Neurohormonal Effects of Faster Atrial Pacing Rate",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Medtronic Pacemaker",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 3,
      "start_date": "2011-04",
      "completion_date": "2012-09",
      "has_results": true,
      "last_update_posted_date": "2018-04-27",
      "last_synced_at": "2026-09-22T13:04:06.158Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00698139"
    },
    {
      "nct_id": "NCT03305692",
      "title": "ECG Belt vs. Echocardiographic Optimization of CRT",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure, Systolic"
      ],
      "interventions": [
        {
          "name": "Optimization of CRT Device",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Alan J. Bank, MD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "110 Years",
        "sex": "ALL",
        "summary": "18 Years to 110 Years"
      },
      "enrollment_count": 3,
      "start_date": "2017-10-31",
      "completion_date": "2021-08-17",
      "has_results": false,
      "last_update_posted_date": "2021-09-27",
      "last_synced_at": "2026-09-22T13:04:06.158Z",
      "location_count": 1,
      "location_summary": "Saint Paul, Minnesota",
      "locations": [
        {
          "city": "Saint Paul",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03305692"
    }
  ]
}