{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Heart+Block&page=16",
    "query": {
      "condition": "Heart Block",
      "page": 16
    },
    "page_size": 10
  },
  "pagination": {
    "page": 16,
    "page_size": 10,
    "total_count": 491,
    "total_pages": 50,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Heart+Block&page=17&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Heart+Block&page=15&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-22T13:59:55.925Z",
  "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": "NCT00806390",
      "title": "Prevention of Anthracycline or Trastuzumab Induced Cardiomyopathy by Metoprolol",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Cardiomyopathy"
      ],
      "interventions": [
        {
          "name": "Metoprolol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Maryland, Baltimore",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2008-07",
      "completion_date": "2012-06",
      "has_results": true,
      "last_update_posted_date": "2022-02-25",
      "last_synced_at": "2026-10-22T13:59:55.925Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00806390"
    },
    {
      "nct_id": "NCT02499666",
      "title": "Change in Exercise Capacity as Measured by Peak Oxygen Uptake After CTO PCI",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Coronary Artery Disease",
        "Angina Pectoris"
      ],
      "interventions": [
        {
          "name": "Percutaneous Coronary Intervention",
          "type": "PROCEDURE"
        },
        {
          "name": "Coronary stent",
          "type": "DEVICE"
        },
        {
          "name": "Clopidogrel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DEVICE",
        "DRUG"
      ],
      "sponsor": "Henry Ford Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 15,
      "start_date": "2015-06-29",
      "completion_date": "2017-10-30",
      "has_results": false,
      "last_update_posted_date": "2022-03-07",
      "last_synced_at": "2026-10-22T13:59:55.925Z",
      "location_count": 1,
      "location_summary": "Detroit, Michigan",
      "locations": [
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02499666"
    },
    {
      "nct_id": "NCT03752151",
      "title": "Micra Atrial TRacking Using A Ventricular AccELerometer 2",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Atrioventricular Conduction Block"
      ],
      "interventions": [
        {
          "name": "MARVEL 2 Algorithm Monitor Mode then Adaptive Mode",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Medtronic Cardiac Rhythm and Heart Failure",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 77,
      "start_date": "2019-01-22",
      "completion_date": "2019-08-07",
      "has_results": true,
      "last_update_posted_date": "2020-06-04",
      "last_synced_at": "2026-10-22T13:59:55.925Z",
      "location_count": 5,
      "location_summary": "Jacksonville, Florida • Miami, Florida • Manhasset, New York + 2 more",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Manhasset",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03752151"
    },
    {
      "nct_id": "NCT01334801",
      "title": "Biomarkers in Aortic Stenosis - B.A.S.S.",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Aortic Stenosis",
        "Disorder of Prosthetic Cardiac Valve",
        "Aortic Valve Insufficiency",
        "Mitral Valve Insufficiency",
        "Hypertrophic Cardiomyopathy",
        "Tricuspid Valve Insufficiency"
      ],
      "interventions": [
        {
          "name": "Blood Draw",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 378,
      "start_date": "2010-07",
      "completion_date": "2020-01-31",
      "has_results": false,
      "last_update_posted_date": "2022-05-05",
      "last_synced_at": "2026-10-22T13:59:55.925Z",
      "location_count": 1,
      "location_summary": "Jacksonville, Florida",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01334801"
    },
    {
      "nct_id": "NCT05147792",
      "title": "The CONFORM Pivotal Trial",
      "overall_status": "SUSPENDED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Atrial Fibrillation",
        "Stroke"
      ],
      "interventions": [
        {
          "name": "CLAAS",
          "type": "DEVICE"
        },
        {
          "name": "WATCHMAN left atrial appendage closure device / Amulet left atrial appendage occluder",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Conformal Medical, Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1600,
      "start_date": "2022-05-26",
      "completion_date": "2031-12",
      "has_results": false,
      "last_update_posted_date": "2026-09-25",
      "last_synced_at": "2026-10-22T13:59:55.925Z",
      "location_count": 79,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 67 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05147792"
    },
    {
      "nct_id": "NCT05646381",
      "title": "A Multicenter Trial Assessing the Impact of Lipoprotein(a) Lowering With Pelacarsen (TQJ230) on the Progression of Calcific Aortic Valve Stenosis",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Aortic Stenosis"
      ],
      "interventions": [
        {
          "name": "Pelacarsen (TQJ230) 80mg",
          "type": "DRUG"
        },
        {
          "name": "Matching placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "50 Years to 80 Years"
      },
      "enrollment_count": 502,
      "start_date": "2024-03-07",
      "completion_date": "2030-03-12",
      "has_results": false,
      "last_update_posted_date": "2026-06-23",
      "last_synced_at": "2026-10-22T13:59:55.925Z",
      "location_count": 35,
      "location_summary": "Huntsville, Alabama • Beverly Hills, California • Covina, California + 26 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Covina",
          "state": "California"
        },
        {
          "city": "Northridge",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05646381"
    },
    {
      "nct_id": "NCT03442400",
      "title": "A Prospective Study of Fractional Flow Reserve Assessment of Intermediate Coronary Stenoses in Severe Aortic Stenosis",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Coronary Artery Stenoses",
        "Aortic Stenosis"
      ],
      "interventions": [
        {
          "name": "Volcano iFR/FFR Verrata Plus coronary pressure/flow wire",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "The Cleveland Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "110 Years",
        "sex": "ALL",
        "summary": "20 Years to 110 Years"
      },
      "enrollment_count": 5,
      "start_date": "2018-02-14",
      "completion_date": "2021-08-10",
      "has_results": true,
      "last_update_posted_date": "2023-01-05",
      "last_synced_at": "2026-10-22T13:59:55.925Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03442400"
    },
    {
      "nct_id": "NCT02543281",
      "title": "Adaptive CRT Effect on Electrical Dyssynchrony",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiomyopathy",
        "Heart Failure",
        "Left Bundle Branch Block"
      ],
      "interventions": [
        {
          "name": "Adaptive cardiac resynchronization therapy",
          "type": "DEVICE"
        },
        {
          "name": "Conventional Cardiac Resynchronization Therapy",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Larisa Tereshchenko",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 32,
      "start_date": "2015-04",
      "completion_date": "2021-09-01",
      "has_results": true,
      "last_update_posted_date": "2025-03-20",
      "last_synced_at": "2026-10-22T13:59:55.925Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02543281"
    },
    {
      "nct_id": "NCT02994667",
      "title": "Pacemaker Utilization and Ventricular Pacing in Patients Undergoing Trans-catheter Aortic Valve Replacement (TAVR)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Ventricular Flutter",
        "Atrioventricular Block",
        "Intraventricular Conduction Delay",
        "Bundle Branch Block",
        "Pacemaker Implantation"
      ],
      "interventions": [
        {
          "name": "Permanent Pacemaker Placement",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Baylor Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2015-01",
      "completion_date": "2019-12-20",
      "has_results": false,
      "last_update_posted_date": "2020-01-22",
      "last_synced_at": "2026-10-22T13:59:55.925Z",
      "location_count": 1,
      "location_summary": "Plano, Texas",
      "locations": [
        {
          "city": "Plano",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02994667"
    },
    {
      "nct_id": "NCT01605669",
      "title": "Correlation of Auscultatory Severity of Aortic Stenosis With Trans Thoracic Echocardiography",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Aortic Stenosis"
      ],
      "interventions": [
        {
          "name": "Tranthoracic Echocardiogram",
          "type": "OTHER"
        },
        {
          "name": "Cardiac Ascultation Recordings with Electronic stethoscope",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DEVICE"
      ],
      "sponsor": "United States Naval Medical Center, San Diego",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2012-05",
      "completion_date": "2013-06",
      "has_results": true,
      "last_update_posted_date": "2016-09-23",
      "last_synced_at": "2026-10-22T13:59:55.925Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01605669"
    }
  ]
}