{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=standard+implantation+of+the+LV+lead",
    "query": {
      "intervention": "standard implantation of the LV lead"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 7,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-09T19:59:19.351Z",
  "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": "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": "2026-10-09T19:59:19.351Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03803995"
    },
    {
      "nct_id": "NCT01983293",
      "title": "CRT Implant Strategy Using the Longest Electrical Delay for Non-left Bundle Branch Block Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Non-left Bundle Branch Block",
        "Ischemic or Non-ischemic Cardiomyopathy"
      ],
      "interventions": [
        {
          "name": "QLV based implant strategy",
          "type": "DEVICE"
        },
        {
          "name": "Standard of care implant strategy",
          "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": 248,
      "start_date": "2013-11",
      "completion_date": "2018-01",
      "has_results": true,
      "last_update_posted_date": "2019-03-13",
      "last_synced_at": "2026-10-09T19:59:19.351Z",
      "location_count": 32,
      "location_summary": "Glendale, California • Los Angeles, California • Mission Viejo, California + 25 more",
      "locations": [
        {
          "city": "Glendale",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Mission Viejo",
          "state": "California"
        },
        {
          "city": "Stockton",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01983293"
    },
    {
      "nct_id": "NCT01515761",
      "title": "POsition of Leads in Advanced heaRt Failure: the POLAR Study",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiac Resynchronization Therapy",
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Postero-lateral",
          "type": "PROCEDURE"
        },
        {
          "name": "Antero-Lateral",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Sergio Thal, M.D.",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2010-09",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2012-01-24",
      "last_synced_at": "2026-10-09T19:59:19.351Z",
      "location_count": 2,
      "location_summary": "Tucson, Arizona • Lexington, Kentucky",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01515761"
    },
    {
      "nct_id": "NCT01278030",
      "title": "Real Time 3-Dimensional Echocardiography for Left Ventricular Lead Site Selection to Reduce Cardiac Resynchronization Therapy Non-Responder Rates",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "3D echo-guided LV lead placement",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Abbott Medical Devices",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 78,
      "start_date": "2010-08",
      "completion_date": null,
      "has_results": true,
      "last_update_posted_date": "2019-02-19",
      "last_synced_at": "2026-10-09T19:59:19.351Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01278030"
    },
    {
      "nct_id": "NCT04905290",
      "title": "Conduction System Pacing Optimized Therapy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Left ventricular coronary sinus (BiV) configuration",
          "type": "DEVICE"
        },
        {
          "name": "Conduction system pacing-only configuration",
          "type": "DEVICE"
        },
        {
          "name": "Conduction System Pacing Optimized Therapy (CSPOT) configuration",
          "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": 60,
      "start_date": "2021-11-27",
      "completion_date": "2023-11-02",
      "has_results": true,
      "last_update_posted_date": "2025-04-15",
      "last_synced_at": "2026-10-09T19:59:19.351Z",
      "location_count": 7,
      "location_summary": "Tampa, Florida • Chicago, Illinois • Houma, Louisiana + 4 more",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Houma",
          "state": "Louisiana"
        },
        {
          "city": "Mounds View",
          "state": "Minnesota"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04905290"
    },
    {
      "nct_id": "NCT01399801",
      "title": "Optimizing Left Ventricular Lead To Improve Cardiac Output",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Ischemic Congestive Cardiomyopathy",
        "Dilated Cardiomyopathy",
        "Congestive Heart Failure"
      ],
      "interventions": [
        {
          "name": "Doppler flow measurement",
          "type": "PROCEDURE"
        },
        {
          "name": "standard implantation of the LV lead",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Ann Marie Chikowski",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 12,
      "start_date": "2010-12",
      "completion_date": "2014-09-25",
      "has_results": false,
      "last_update_posted_date": "2022-08-30",
      "last_synced_at": "2026-10-09T19:59:19.351Z",
      "location_count": 1,
      "location_summary": "Wynnewood, Pennsylvania",
      "locations": [
        {
          "city": "Wynnewood",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01399801"
    },
    {
      "nct_id": "NCT05327062",
      "title": "Cardiac Resynchronization Therapy Delivery Guided Non-Invasive Electrical and Venous Anatomy Assessment",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiac Resynchronization Therapy",
        "Chronic Heart Failure",
        "Left Bundle-Branch Block"
      ],
      "interventions": [
        {
          "name": "CRT implantation guided by XSpline, a non-invasive electrical and venous anatomy assessment",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "XSpline S.p.A.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 150,
      "start_date": "2023-03-06",
      "completion_date": "2025-09",
      "has_results": false,
      "last_update_posted_date": "2024-10-24",
      "last_synced_at": "2026-10-09T19:59:19.351Z",
      "location_count": 4,
      "location_summary": "Chicago, Illinois • Boston, Massachusetts • Durham, North Carolina",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05327062"
    }
  ]
}