{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Defibrillator+threshold+testing",
    "query": {
      "intervention": "Defibrillator threshold testing"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 9,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-03T00:27:30.710Z",
  "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": "NCT02095977",
      "title": "Insulation Failure in St. Jude Riata Leads",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Implanted With Any Currently (and Any Future) FDA-approved Medtronic ICD or CRT Device",
        "to Which is Attached a St. Jude Riata Lead"
      ],
      "interventions": [
        {
          "name": "fluoroscopy",
          "type": "PROCEDURE"
        },
        {
          "name": "synchronized high-voltage shock",
          "type": "PROCEDURE"
        },
        {
          "name": "Holter monitor",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Hartford Hospital",
      "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": "2013-07",
      "completion_date": "2019-01",
      "has_results": false,
      "last_update_posted_date": "2017-02-08",
      "last_synced_at": "2026-09-03T00:27:30.710Z",
      "location_count": 1,
      "location_summary": "Hartford, Connecticut",
      "locations": [
        {
          "city": "Hartford",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02095977"
    },
    {
      "nct_id": "NCT02111993",
      "title": "Evaluating Myocardial Injury for Defibrillation Threshold Testing Methods for ICD Implantation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiomyopathy",
        "Heart Failure",
        "Cardiac Arrhythmia"
      ],
      "interventions": [
        {
          "name": "Standard Defibrillation Testing",
          "type": "DEVICE"
        },
        {
          "name": "Upper Limit of Vulnerability Testing",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2011-08",
      "completion_date": "2015-06",
      "has_results": true,
      "last_update_posted_date": "2019-05-22",
      "last_synced_at": "2026-09-03T00:27:30.710Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02111993"
    },
    {
      "nct_id": "NCT01520714",
      "title": "Effect of Posture on Left Ventricular (LV) Transvenous Lead Capture Thresholds (EXPECT)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Congestive Heart Failure"
      ],
      "interventions": [
        {
          "name": "Medtronic 4195 active fixation LV lead and Medtronic passive fixation LV lead",
          "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": 11,
      "start_date": "2009-12",
      "completion_date": "2011-12",
      "has_results": true,
      "last_update_posted_date": "2014-05-26",
      "last_synced_at": "2026-09-03T00:27:30.710Z",
      "location_count": 1,
      "location_summary": "Plano, Texas",
      "locations": [
        {
          "city": "Plano",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01520714"
    },
    {
      "nct_id": "NCT01043562",
      "title": "Precise Measurement of Pediatric Defibrillation Thresholds",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pediatrics",
        "Defibrillators, Implantable"
      ],
      "interventions": [
        {
          "name": "Defibrillator threshold testing",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Observation of post-shock intrinsic cardiac rhythm",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "Boston Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 20,
      "start_date": "2009-06-04",
      "completion_date": "2012-05-10",
      "has_results": true,
      "last_update_posted_date": "2018-02-05",
      "last_synced_at": "2026-09-03T00:27:30.710Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01043562"
    },
    {
      "nct_id": "NCT00749671",
      "title": "Bispectral Index Monitoring During Testing in the Electrophysiology Lab",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tachycardia, Ventricular"
      ],
      "interventions": [
        {
          "name": "Bispectral index monitoring",
          "type": "DEVICE"
        },
        {
          "name": "Ramsey Sedation Scale",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "Baystate Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "21 Years to 65 Years"
      },
      "enrollment_count": 20,
      "start_date": "2007-10",
      "completion_date": "2013-08",
      "has_results": true,
      "last_update_posted_date": "2016-10-19",
      "last_synced_at": "2026-09-03T00:27:30.710Z",
      "location_count": 1,
      "location_summary": "Springfield, Massachusetts",
      "locations": [
        {
          "city": "Springfield",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00749671"
    },
    {
      "nct_id": "NCT00385749",
      "title": "Right Ventricular Defibrillation Lead Select Site Study",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure, Congestive",
        "Tachycardia, Ventricular"
      ],
      "interventions": [
        {
          "name": "RV apical vs RV septal defibrillation threshold testing",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Associates in Cardiology, PA",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 98,
      "start_date": "2006-10",
      "completion_date": "2008-12",
      "has_results": false,
      "last_update_posted_date": "2007-11-01",
      "last_synced_at": "2026-09-03T00:27:30.710Z",
      "location_count": 1,
      "location_summary": "Silver Spring, Maryland",
      "locations": [
        {
          "city": "Silver Spring",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00385749"
    },
    {
      "nct_id": "NCT01905007",
      "title": "Study of Defibrillation Testing In Patients Undergoing Initial ICD Implantation",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Ventricular Arrhythmias"
      ],
      "interventions": [
        {
          "name": "Defibrillation testing",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "The Cooper 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": 100,
      "start_date": "2010-12",
      "completion_date": "2014-12",
      "has_results": false,
      "last_update_posted_date": "2013-07-22",
      "last_synced_at": "2026-09-03T00:27:30.710Z",
      "location_count": 2,
      "location_summary": "Camden, New Jersey • Seattle, Washington",
      "locations": [
        {
          "city": "Camden",
          "state": "New Jersey"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01905007"
    },
    {
      "nct_id": "NCT03711695",
      "title": "iBeat Wristwatch Validation Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Arrythmia, Cardiac"
      ],
      "interventions": [
        {
          "name": "iBeat wristwatch device",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "21 Years to 85 Years"
      },
      "enrollment_count": 55,
      "start_date": "2018-03-22",
      "completion_date": "2018-12-30",
      "has_results": false,
      "last_update_posted_date": "2019-03-05",
      "last_synced_at": "2026-09-03T00:27:30.710Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03711695"
    },
    {
      "nct_id": "NCT00626093",
      "title": "'Effect of CRT on Defibrillation Threshold Estimates' Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Sudden Cardiac Death"
      ],
      "interventions": [
        {
          "name": "Cardiac Resynchronization Therapy - Defibrillator (CRT-D)",
          "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": 77,
      "start_date": "2008-01",
      "completion_date": "2010-04",
      "has_results": true,
      "last_update_posted_date": "2019-02-05",
      "last_synced_at": "2026-09-03T00:27:30.710Z",
      "location_count": 2,
      "location_summary": "Santa Monica, California • Colorado Springs, Colorado",
      "locations": [
        {
          "city": "Santa Monica",
          "state": "California"
        },
        {
          "city": "Colorado Springs",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00626093"
    }
  ]
}