{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Right+Bundle-Branch+Block",
    "query": {
      "condition": "Right Bundle-Branch Block"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 6,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-26T10:01:01.105Z",
  "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": "NCT05265520",
      "title": "His-Bundle Corrective Pacing in Heart Failure",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Right Bundle-Branch Block",
        "Heart Failure",
        "His-bundle Pacing",
        "Cardiac Resynchronization Therapy"
      ],
      "interventions": [
        {
          "name": "His-CRT implantation",
          "type": "PROCEDURE"
        },
        {
          "name": "BIV-CRT implantation",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of Rochester",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 120,
      "start_date": "2022-12-02",
      "completion_date": "2028-07-01",
      "has_results": false,
      "last_update_posted_date": "2026-02-09",
      "last_synced_at": "2026-06-26T10:01:01.105Z",
      "location_count": 14,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • Tampa, Florida + 8 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05265520"
    },
    {
      "nct_id": "NCT05541679",
      "title": "Comparison of Left Bundle Branch Area Versus Right Ventricular Septal Pacing in Patients With High-degree Conduction Disease After Transcatheter Aortic Valve Replacement (Left Bundle BRAVE)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Complete Heart Block",
        "High Degree Second Degree Atrioventricular Block",
        "Pacemaker-Induced Cardiomyopathy",
        "Aortic Valve Stenosis"
      ],
      "interventions": [
        {
          "name": "Right ventricular septal pacing followed by left bundle branch area pacing",
          "type": "DEVICE"
        },
        {
          "name": "Left bundle branch area pacing followed by right ventricular septal pacing",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Main Line Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 46,
      "start_date": "2022-12-28",
      "completion_date": "2025-12-31",
      "has_results": false,
      "last_update_posted_date": "2024-12-10",
      "last_synced_at": "2026-06-26T10:01:01.105Z",
      "location_count": 4,
      "location_summary": "Overland Park, Kansas • Ridgewood, New Jersey • Philadelphia, Pennsylvania + 1 more",
      "locations": [
        {
          "city": "Overland Park",
          "state": "Kansas"
        },
        {
          "city": "Ridgewood",
          "state": "New Jersey"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Wynnewood",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05541679"
    },
    {
      "nct_id": "NCT02441101",
      "title": "Right Ventricular Septal Pacing in Patients With Right Bundle Branch Block and Heart Failure (The SPARK Trial)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Right Bundle-Branch Block",
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "RV DDD(R)-60 with AV optimization",
          "type": "DEVICE"
        },
        {
          "name": "RV DDD(R)-60",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Barry London",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 6,
      "start_date": "2016-02-01",
      "completion_date": "2020-02-11",
      "has_results": true,
      "last_update_posted_date": "2024-06-18",
      "last_synced_at": "2026-06-26T10:01:01.105Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02441101"
    },
    {
      "nct_id": "NCT05936294",
      "title": "Adaptive Cardiac Resynchronization Therapy in Patients With RBBB",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Right Bundle-Branch Block"
      ],
      "interventions": [
        {
          "name": "Optimization of CRT Device",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Henry Ford Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "18 Years to 89 Years"
      },
      "enrollment_count": 5,
      "start_date": "2017-09-15",
      "completion_date": "2021-03-31",
      "has_results": false,
      "last_update_posted_date": "2023-07-07",
      "last_synced_at": "2026-06-26T10:01:01.105Z",
      "location_count": 2,
      "location_summary": "Little Rock, Arkansas • Detroit, Michigan",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05936294"
    },
    {
      "nct_id": "NCT06601322",
      "title": "Functional Outcomes in CondUction System Pacing and Right Ventricular Synchrony (FOCUS-Right)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Left Branch Bundle Block",
        "RV - Right Ventricular Abnormality"
      ],
      "interventions": [
        {
          "name": "Pacemaker Interrogation and Electrocardiogram (ECG):",
          "type": "OTHER"
        },
        {
          "name": "Cardiopulmonary Exercise Test (CPET) and Exercise Stress Cardiac Magnetic Resonance (ExeCMR",
          "type": "OTHER"
        },
        {
          "name": "Continuous pacemaker telemetry (CPT)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2024-08-23",
      "completion_date": "2026-07",
      "has_results": false,
      "last_update_posted_date": "2026-06-17",
      "last_synced_at": "2026-06-26T10:01:01.105Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06601322"
    },
    {
      "nct_id": "NCT01169493",
      "title": "Pacing Affects Cardiovascular Endpoints in Patients With Right Bundle-Branch Block (The PACE-RBBB Trial)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure",
        "Right Bundle-Branch Block"
      ],
      "interventions": [
        {
          "name": "VVI-40",
          "type": "DEVICE"
        },
        {
          "name": "RV DDD-40",
          "type": "DEVICE"
        },
        {
          "name": "BiV DDD-40",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 16,
      "start_date": "2011-01",
      "completion_date": "2014-08",
      "has_results": true,
      "last_update_posted_date": "2016-09-23",
      "last_synced_at": "2026-06-26T10:01:01.105Z",
      "location_count": 2,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01169493"
    }
  ]
}