{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Heart+Block&page=8",
    "query": {
      "condition": "Heart Block",
      "page": 8
    },
    "page_size": 10
  },
  "pagination": {
    "page": 8,
    "page_size": 10,
    "total_count": 491,
    "total_pages": 50,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Heart+Block&page=9&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Heart+Block&page=7&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-22T08:04:41.353Z",
  "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": "NCT01129635",
      "title": "Optimal Coronary Sinus Lead Implantation Using Intracardiac Impedography and Magnetic Resonance Imaging",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure, Systolic",
        "Left Bundle Branch Block"
      ],
      "interventions": [
        {
          "name": "Cardiac Resynchronization Therapy (CRT) implantation",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 38,
      "start_date": "2010-06",
      "completion_date": "2014-12",
      "has_results": false,
      "last_update_posted_date": "2015-01-21",
      "last_synced_at": "2026-10-22T08:04:41.353Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01129635"
    },
    {
      "nct_id": "NCT01695564",
      "title": "Safety and Efficacy of Left Atrial Appendage Occlusion Devices",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Atrial Fibrillation"
      ],
      "interventions": [
        {
          "name": "LARIAT LAA",
          "type": "DEVICE"
        },
        {
          "name": "WATCHMAN",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Kansas City Heart Rhythm Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 169,
      "start_date": "2012-05",
      "completion_date": "2018-02",
      "has_results": false,
      "last_update_posted_date": "2019-05-02",
      "last_synced_at": "2026-10-22T08:04:41.353Z",
      "location_count": 1,
      "location_summary": "Kansas City, Kansas",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01695564"
    },
    {
      "nct_id": "NCT00245648",
      "title": "Female Sex is an Independent Predictor of Death and Bleeding Among Fibrinolytic Treated Patients With AMI",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Myocardial Infarction"
      ],
      "interventions": [
        {
          "name": "fibrinolytic therapy or combination reduced fibrinolytic therapy",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "NYU Langone Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": null,
      "start_date": "2001-06",
      "completion_date": "2007-10",
      "has_results": false,
      "last_update_posted_date": "2012-10-04",
      "last_synced_at": "2026-10-22T08:04:41.353Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00245648"
    },
    {
      "nct_id": "NCT00307047",
      "title": "SPIRIT IV Clinical Trial: Clinical Evaluation of the XIENCE V® Everolimus Eluting Coronary Stent System",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Coronary Artery Disease"
      ],
      "interventions": [
        {
          "name": "XIENCE V® Everolimus Eluting Coronary Stent",
          "type": "DEVICE"
        },
        {
          "name": "TAXUS™ EXPRESS2™ Paclitaxel Eluting Coronary Stent",
          "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": 3687,
      "start_date": "2006-08",
      "completion_date": "2012-05",
      "has_results": true,
      "last_update_posted_date": "2012-11-07",
      "last_synced_at": "2026-10-22T08:04:41.353Z",
      "location_count": 65,
      "location_summary": "Scottsdale, Arizona • Little Rock, Arkansas • Fairfax, California + 54 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Fairfax",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00307047"
    },
    {
      "nct_id": "NCT02805309",
      "title": "Home-Based Exercise Program For Recovery After Transcatheter Aortic Valve Replacement",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Aortic Valve Stenosis"
      ],
      "interventions": [
        {
          "name": "Exercise",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Cognitive behavioral interventions",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Attention control education program",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 64,
      "start_date": "2017-08-01",
      "completion_date": "2020-05-06",
      "has_results": true,
      "last_update_posted_date": "2021-07-21",
      "last_synced_at": "2026-10-22T08:04:41.353Z",
      "location_count": 3,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02805309"
    },
    {
      "nct_id": "NCT00700947",
      "title": "Using Beta Blockers to Treat Mitral Regurgitation",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Heart Disease",
        "Mitral Regurgitation",
        "Heart Valve Disease",
        "Mitral Valve Insufficiency"
      ],
      "interventions": [
        {
          "name": "Beta-blocker therapy (TOPROL-XL® )",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 27,
      "start_date": "2007-10",
      "completion_date": "2009-09",
      "has_results": false,
      "last_update_posted_date": "2018-08-14",
      "last_synced_at": "2026-10-22T08:04:41.353Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00700947"
    },
    {
      "nct_id": "NCT03735667",
      "title": "ACURATE IDE: Safety and Effectiveness Study of ACURATE Valve for Transcatheter Aortic Valve Replacement",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Aortic Stenosis"
      ],
      "interventions": [
        {
          "name": "ACURATE neo2™ Transfemoral TAVR System",
          "type": "DEVICE"
        },
        {
          "name": "Medtronic CoreValve TAVR System",
          "type": "DEVICE"
        },
        {
          "name": "Edwards SAPIEN 3 TAVR System",
          "type": "DEVICE"
        },
        {
          "name": "ACURATE Prime™ Transfemoral TAVR System XL",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Boston Scientific Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 1948,
      "start_date": "2019-06-10",
      "completion_date": "2029-09",
      "has_results": true,
      "last_update_posted_date": "2026-09-16",
      "last_synced_at": "2026-10-22T08:04:41.353Z",
      "location_count": 69,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 58 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03735667"
    },
    {
      "nct_id": "NCT04093414",
      "title": "Left Bundle Area Versus Selective His Bundle Pacing",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Bradycardia",
        "Sinus Node Dysfunction",
        "Atrioventricular Block"
      ],
      "interventions": [
        {
          "name": "Select Secure pacing lead",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "David Haines, MD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 9,
      "start_date": "2019-10-07",
      "completion_date": "2022-02-22",
      "has_results": true,
      "last_update_posted_date": "2022-08-17",
      "last_synced_at": "2026-10-22T08:04:41.353Z",
      "location_count": 2,
      "location_summary": "Royal Oak, Michigan • Troy, Michigan",
      "locations": [
        {
          "city": "Royal Oak",
          "state": "Michigan"
        },
        {
          "city": "Troy",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04093414"
    },
    {
      "nct_id": "NCT01843426",
      "title": "Aortic Stenosis Pre-Transcatheter Aortic Valve Replacement (TAVR) Procedure CT Scan",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Aortic Valve Stenosis"
      ],
      "interventions": [
        {
          "name": "Low-volume, low-concentration contrast (iodixanol - Visipaque 270) CT scan",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Medical University of South Carolina",
      "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": 40,
      "start_date": "2013-02",
      "completion_date": "2017-09-25",
      "has_results": false,
      "last_update_posted_date": "2018-08-02",
      "last_synced_at": "2026-10-22T08:04:41.353Z",
      "location_count": 1,
      "location_summary": "Charleston, South Carolina",
      "locations": [
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01843426"
    },
    {
      "nct_id": "NCT03899701",
      "title": "Effective Use of Pecs and Transversus Thoracics Plane Blocks for Subcutaneous Cardiac Pacemaker Insertion: A Case Series",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Anesthesia, Local"
      ],
      "interventions": [
        {
          "name": "PEC I and PEC II blocks",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Montefiore Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 0,
      "start_date": "2021-11",
      "completion_date": "2022-03",
      "has_results": false,
      "last_update_posted_date": "2022-01-20",
      "last_synced_at": "2026-10-22T08:04:41.353Z",
      "location_count": 1,
      "location_summary": "The Bronx, New York",
      "locations": [
        {
          "city": "The Bronx",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03899701"
    }
  ]
}