{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Programming+of+CRT+device+settings",
    "query": {
      "intervention": "Programming of CRT device settings"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 4,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-07T05:04:02.350Z",
  "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": "NCT04763460",
      "title": "Effects of CRT Optimization as Assessed by Cardiac MR",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure, Systolic"
      ],
      "interventions": [
        {
          "name": "Programming of CRT device settings",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Minneapolis Heart Institute Foundation",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 0,
      "start_date": "2023-06-01",
      "completion_date": "2026-03-02",
      "has_results": false,
      "last_update_posted_date": "2026-03-04",
      "last_synced_at": "2026-09-07T05:04:02.350Z",
      "location_count": 2,
      "location_summary": "Minneapolis, Minnesota • Saint Paul, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Saint Paul",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04763460"
    },
    {
      "nct_id": "NCT00677014",
      "title": "Comparison of AV Optimization Methods Used in Cardiac Resynchronization Therapy (CRT)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "AV Delay programming through cardiac resynchronization therapy",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Boston Scientific Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1060,
      "start_date": "2008-05",
      "completion_date": "2010-07",
      "has_results": true,
      "last_update_posted_date": "2013-04-24",
      "last_synced_at": "2026-09-07T05:04:02.350Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00677014"
    },
    {
      "nct_id": "NCT04083690",
      "title": "Multi-lead ECG to Effectively Optimize Resynchronization Devices: New CRT Recipients",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure, Systolic"
      ],
      "interventions": [
        {
          "name": "Reprogramming of CRT Device Settings to Optimal Electrical Synchrony",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Allina Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 120,
      "start_date": "2019-10-11",
      "completion_date": "2024-10-01",
      "has_results": false,
      "last_update_posted_date": "2022-06-09",
      "last_synced_at": "2026-09-07T05:04:02.350Z",
      "location_count": 2,
      "location_summary": "Minneapolis, Minnesota • Saint Paul, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Saint Paul",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04083690"
    },
    {
      "nct_id": "NCT03936608",
      "title": "ECG for Programming in CRT",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Systolic Heart Failure",
        "Cardiac Resynchronization Therapy",
        "Electrocardiography"
      ],
      "interventions": [
        {
          "name": "Programming individualized RV-LV pacing offset to optimize ECG",
          "type": "DEVICE"
        },
        {
          "name": "Nominally programming CRT device without RV-LV offset",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 4,
      "start_date": "2019-04-22",
      "completion_date": "2019-11-21",
      "has_results": true,
      "last_update_posted_date": "2020-12-03",
      "last_synced_at": "2026-09-07T05:04:02.350Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03936608"
    }
  ]
}