{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=CRT-D+implantation&page=2",
    "query": {
      "intervention": "CRT-D implantation",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 27,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=CRT-D+implantation&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=CRT-D+implantation&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-05T14:45:12.821Z",
  "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": "NCT01555619",
      "title": "Quadripolar Pacing Post Approval Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "CRT-D System",
          "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": 1971,
      "start_date": "2012-02-15",
      "completion_date": "2019-02-28",
      "has_results": false,
      "last_update_posted_date": "2019-04-16",
      "last_synced_at": "2026-10-05T14:45:12.821Z",
      "location_count": 71,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama • Montgomery, Alabama + 68 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Montgomery",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Fayetteville",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01555619"
    },
    {
      "nct_id": "NCT02290028",
      "title": "Sentus QP - Extended CRT Evaluation With Quadripolar Left Ventricular Leads",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Sentus QP left ventricular lead",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Biotronik SE & Co. KG",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2226,
      "start_date": "2014-12-16",
      "completion_date": "2020-01-23",
      "has_results": true,
      "last_update_posted_date": "2021-03-24",
      "last_synced_at": "2026-10-05T14:45:12.821Z",
      "location_count": 75,
      "location_summary": "Fairhope, Alabama • Anchorage, Alaska • Chula Vista, California + 64 more",
      "locations": [
        {
          "city": "Fairhope",
          "state": "Alabama"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Chula Vista",
          "state": "California"
        },
        {
          "city": "Inglewood",
          "state": "California"
        },
        {
          "city": "Rancho Mirage",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02290028"
    },
    {
      "nct_id": "NCT02374801",
      "title": "Continued Access Clinical Trial of the SonRtip Lead and Automatic AV-VV Optimization Algorithm in the PARADYM RF SonR CRT-D",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure (NYHA Class III and Ambulatory IV)"
      ],
      "interventions": [
        {
          "name": "SonR automatic optimization feature turned ON (\"AV+VV\").",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "MicroPort CRM",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 49,
      "start_date": "2015-04",
      "completion_date": "2019-12",
      "has_results": false,
      "last_update_posted_date": "2019-01-11",
      "last_synced_at": "2026-10-05T14:45:12.821Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02374801"
    },
    {
      "nct_id": "NCT01751022",
      "title": "Attain Performa(TM) Quadripolar Lead Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Device: Attain Performa Pacing Lead (along with a standard CRT-D system)",
          "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": 1202,
      "start_date": "2012-12",
      "completion_date": "2015-02",
      "has_results": true,
      "last_update_posted_date": "2016-12-05",
      "last_synced_at": "2026-10-05T14:45:12.821Z",
      "location_count": 67,
      "location_summary": "Glendale, California • Riverside, California • San Diego, California + 64 more",
      "locations": [
        {
          "city": "Glendale",
          "state": "California"
        },
        {
          "city": "Riverside",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Jose",
          "state": "California"
        },
        {
          "city": "Standford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01751022"
    },
    {
      "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": "2026-10-05T14:45:12.821Z",
      "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": "NCT00559988",
      "title": "Combined Use of BIOTRONIK Home Monitoring and Predefined Anticoagulation to Reduce Stroke Risk",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Atrial Fibrillation",
        "Atrial Flutter",
        "Stroke",
        "Embolism, Systemic Arterial",
        "Major Bleeding"
      ],
      "interventions": [
        {
          "name": "Home Monitoring Guided OAC",
          "type": "DRUG"
        },
        {
          "name": "Physician-Directed OAC",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Biotronik, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2718,
      "start_date": "2008-02",
      "completion_date": "2013-06",
      "has_results": true,
      "last_update_posted_date": "2017-12-05",
      "last_synced_at": "2026-10-05T14:45:12.821Z",
      "location_count": 73,
      "location_summary": "Phoenix, Arizona • Scottsdale, Arizona • Anaheim, California + 70 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "Fremont",
          "state": "California"
        },
        {
          "city": "Santa Barbara",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00559988"
    },
    {
      "nct_id": "NCT01294449",
      "title": "Multicenter Automatic Defibrillator Implantation Trial With Cardiac Resynchronization Therapy Post Approval Registry",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "MADIT-CRT ICD",
          "type": "DEVICE"
        },
        {
          "name": "MADIT-CRT CRT-D",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Boston Scientific Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 394,
      "start_date": "2011-03",
      "completion_date": "2013-11",
      "has_results": true,
      "last_update_posted_date": "2014-12-04",
      "last_synced_at": "2026-10-05T14:45:12.821Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01294449"
    },
    {
      "nct_id": "NCT01596595",
      "title": "Longitudinal Surveillance Study of the 4-SITE Lead/Header System",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Primary Prevention of Sudden Cardiac Arrest",
        "Secondary Prevention of Sudden Cardiac Arrest"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Boston Scientific Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 1820,
      "start_date": "2013-04-04",
      "completion_date": "2020-02-18",
      "has_results": true,
      "last_update_posted_date": "2021-03-19",
      "last_synced_at": "2026-10-05T14:45:12.821Z",
      "location_count": 104,
      "location_summary": "Anchorage, Alaska • Glendale, Arizona • Mesa, Arizona + 94 more",
      "locations": [
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Glendale",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01596595"
    },
    {
      "nct_id": "NCT02164721",
      "title": "Multicenter Automatic Defibrillator Implantation Trial - Chemotherapy-Induced Cardiomyopathy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiomyopathy"
      ],
      "interventions": [
        {
          "name": "Three-lead CRT-D (Defibrillator)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Rochester",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 30,
      "start_date": "2014-11",
      "completion_date": "2019-02-06",
      "has_results": true,
      "last_update_posted_date": "2020-03-04",
      "last_synced_at": "2026-10-05T14:45:12.821Z",
      "location_count": 9,
      "location_summary": "Los Angeles, California • Washington D.C., District of Columbia • Tampa, Florida + 6 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02164721"
    },
    {
      "nct_id": "NCT00870324",
      "title": "OptiSense™ Performance in Detecting Atrial Episodes",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Tachyarrhythmias",
        "Atrial Fibrillation"
      ],
      "interventions": [
        {
          "name": "OptiSense Lead",
          "type": "DEVICE"
        },
        {
          "name": "Tendril Lead",
          "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": 50,
      "start_date": "2009-03",
      "completion_date": "2010-09",
      "has_results": false,
      "last_update_posted_date": "2019-02-04",
      "last_synced_at": "2026-10-05T14:45:12.821Z",
      "location_count": 2,
      "location_summary": "Akron, Ohio • Columbus, Ohio",
      "locations": [
        {
          "city": "Akron",
          "state": "Ohio"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00870324"
    }
  ]
}