{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Heart+Block",
    "query": {
      "condition": "Heart Block"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 480,
    "total_pages": 48,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Heart+Block&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T00:04:35.890Z",
  "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": "NCT01736956",
      "title": "Fetal Intervention for Aortic Stenosis and Evolving Hypoplastic Left Heart Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Aortic Stenosis",
        "Hypoplastic Left Heart Syndrome"
      ],
      "interventions": [
        {
          "name": "Fetal Aortic Valvuloplasty",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "16 Years and older · Female only"
      },
      "enrollment_count": 9,
      "start_date": "2012-10",
      "completion_date": "2022-10",
      "has_results": false,
      "last_update_posted_date": "2023-01-09",
      "last_synced_at": "2026-05-22T00:04:35.890Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01736956"
    },
    {
      "nct_id": "NCT02184442",
      "title": "The PARTNER II Trial: Placement of AoRTic TraNscathetER Valves - PII B",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Severe",
        "Symptomatic",
        "Calcific Aortic Stenosis"
      ],
      "interventions": [
        {
          "name": "TAVR Implantation with SAPIEN XT",
          "type": "DEVICE"
        },
        {
          "name": "TAVR Implantation with SAPIEN",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Edwards Lifesciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 560,
      "start_date": "2011-03-09",
      "completion_date": "2017-05-30",
      "has_results": true,
      "last_update_posted_date": "2018-09-25",
      "last_synced_at": "2026-05-22T00:04:35.890Z",
      "location_count": 53,
      "location_summary": "Little Rock, Arkansas • La Jolla, California • Los Angeles, California + 45 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02184442"
    },
    {
      "nct_id": "NCT02699957",
      "title": "Left Atrial Appendage Occlusion Registry (LAAO Registry)",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Atrial Fibrillation"
      ],
      "interventions": [
        {
          "name": "Left Atrial Appendage Occlusion",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "American College of Cardiology",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3000,
      "start_date": "2015-12",
      "completion_date": "2026-01",
      "has_results": false,
      "last_update_posted_date": "2024-04-18",
      "last_synced_at": "2026-05-22T00:04:35.890Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02699957"
    },
    {
      "nct_id": "NCT01249027",
      "title": "XIENCE V Everolimus Eluting Coronary Stent System (EECSS) China: Post-Approval, Single-Arm Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Angioplasty",
        "Chronic Coronary Occlusion",
        "Stent Thrombosis",
        "Vascular Disease",
        "Myocardial Ischemia",
        "Coronary Artery Stenosis",
        "Coronary Disease",
        "Coronary Artery Disease",
        "Coronary Restenosis"
      ],
      "interventions": [
        {
          "name": "XIENCE V® Everolimus Eluting Coronary Stent System (EECSS)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Abbott Medical Devices",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 2605,
      "start_date": "2010-11",
      "completion_date": "2017-01",
      "has_results": true,
      "last_update_posted_date": "2019-03-01",
      "last_synced_at": "2026-05-22T00:04:35.890Z",
      "location_count": 1,
      "location_summary": "Santa Clara, California",
      "locations": [
        {
          "city": "Santa Clara",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01249027"
    },
    {
      "nct_id": "NCT05189886",
      "title": "Transcatheter Aortic Valve Replacement (TAVR) Double Balloon Valvuloplasty",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Aortic Valve Stenosis"
      ],
      "interventions": [
        {
          "name": "Double Balloon Valvuloplasty in TAVR",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Community Memorial Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 400,
      "start_date": "2021-11-10",
      "completion_date": "2024-12",
      "has_results": false,
      "last_update_posted_date": "2022-01-13",
      "last_synced_at": "2026-05-22T00:04:35.890Z",
      "location_count": 1,
      "location_summary": "Ventura, California",
      "locations": [
        {
          "city": "Ventura",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05189886"
    },
    {
      "nct_id": "NCT00798122",
      "title": "Study of Women With Acute Coronary Syndromes and Nonobstructive Coronary Artery Disease",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Acute Coronary Syndromes"
      ],
      "interventions": [
        {
          "name": "Intravascular ultrasound",
          "type": "PROCEDURE"
        },
        {
          "name": "MRI",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "NYU Langone Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 50,
      "start_date": "2006-03-01",
      "completion_date": "2027-07-01",
      "has_results": false,
      "last_update_posted_date": "2025-07-02",
      "last_synced_at": "2026-05-22T00:04:35.890Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00798122"
    },
    {
      "nct_id": "NCT04142658",
      "title": "PROACT Xa - A Trial to Determine if Participants With an On-X Aortic Valve Can be Maintained Safely on Apixaban",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Aortic Valve Disease",
        "Aortic Valve Stenosis",
        "Aortic Valve Failure"
      ],
      "interventions": [
        {
          "name": "Apixaban 5 MG",
          "type": "DRUG"
        },
        {
          "name": "Apixaban 2.5 MG",
          "type": "DRUG"
        },
        {
          "name": "Warfarin",
          "type": "DRUG"
        },
        {
          "name": "On-X Aortic Mechanical Valve",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "Artivion Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 863,
      "start_date": "2020-05-01",
      "completion_date": "2022-12-12",
      "has_results": true,
      "last_update_posted_date": "2024-03-20",
      "last_synced_at": "2026-05-22T00:04:35.890Z",
      "location_count": 62,
      "location_summary": "Tucson, Arizona • Little Rock, Arkansas • Loma Linda, California + 50 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Loma Linda",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04142658"
    },
    {
      "nct_id": "NCT06358508",
      "title": "Sapphire 3 CTO Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Coronary Artery Disease",
        "Coronary Disease",
        "Myocardial Ischemia",
        "Heart Diseases",
        "Arteriosclerosis",
        "Cardiovascular Diseases",
        "Chronic Total Occlusion",
        "Chronic Total Occlusion of Coronary Artery"
      ],
      "interventions": [
        {
          "name": "Sapphire 3 Coronary Dilatation Catheter",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "OrbusNeich",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 170,
      "start_date": "2024-11-06",
      "completion_date": "2025-10-21",
      "has_results": false,
      "last_update_posted_date": "2026-01-12",
      "last_synced_at": "2026-05-22T00:04:35.890Z",
      "location_count": 12,
      "location_summary": "Stanford, California • Torrance, California • Atlanta, Georgia + 5 more",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Torrance",
          "state": "California"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06358508"
    },
    {
      "nct_id": "NCT03803995",
      "title": "Mapping and Pacing of the His Bundle for Heart Failure Patients With Left Bundle Branch Block",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure",
        "Left Bundle-Branch Block"
      ],
      "interventions": [
        {
          "name": "Mapping and Pacing the His Bundle",
          "type": "PROCEDURE"
        },
        {
          "name": "Placing a guidewire in Coronary sinus for measurement of Q-LV during His Bundle pacing or, if needed, for LV pacing",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "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": 18,
      "start_date": "2019-03-20",
      "completion_date": "2024-04-26",
      "has_results": false,
      "last_update_posted_date": "2025-10-02",
      "last_synced_at": "2026-05-22T00:04:35.890Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03803995"
    },
    {
      "nct_id": "NCT02173548",
      "title": "Interleukin-1 Blockade in HF With Preserved EF",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Heart Failure With Normal Ejection Fraction"
      ],
      "interventions": [
        {
          "name": "Anakinra",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 31,
      "start_date": "2014-09",
      "completion_date": "2017-06-01",
      "has_results": true,
      "last_update_posted_date": "2018-06-19",
      "last_synced_at": "2026-05-22T00:04:35.890Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02173548"
    }
  ]
}