{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Cardiac+Chambers",
    "query": {
      "condition": "Cardiac Chambers"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 49,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Cardiac+Chambers&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-26T17:05:12.175Z",
  "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": "NCT00638664",
      "title": "Evaluation of the MRI in Measuring the Cardiac Chambers and Thoracic Great Vessels",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cardiac Chambers"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "State University of New York - Upstate Medical University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 31,
      "start_date": "1995-05",
      "completion_date": "2015-05",
      "has_results": false,
      "last_update_posted_date": "2023-12-21",
      "last_synced_at": "2026-06-26T17:05:12.175Z",
      "location_count": 1,
      "location_summary": "Syracuse, New York",
      "locations": [
        {
          "city": "Syracuse",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00638664"
    },
    {
      "nct_id": "NCT04112433",
      "title": "Novel Cardiac Signal Processing System",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cardiac Arrhythmia"
      ],
      "interventions": [
        {
          "name": "PURE EP 2",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "BioSig Technologies, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 104,
      "start_date": "2019-11-12",
      "completion_date": "2022-01-29",
      "has_results": false,
      "last_update_posted_date": "2022-02-11",
      "last_synced_at": "2026-06-26T17:05:12.175Z",
      "location_count": 3,
      "location_summary": "Jacksonville, Florida • Boston, Massachusetts • Austin, Texas",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04112433"
    },
    {
      "nct_id": "NCT01129635",
      "title": "Optimal Coronary Sinus Lead Implantation Using Intracardiac Impedography and Magnetic Resonance Imaging",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure, Systolic",
        "Left Bundle Branch Block"
      ],
      "interventions": [
        {
          "name": "Cardiac Resynchronization Therapy (CRT) implantation",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 38,
      "start_date": "2010-06",
      "completion_date": "2014-12",
      "has_results": false,
      "last_update_posted_date": "2015-01-21",
      "last_synced_at": "2026-06-26T17:05:12.175Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01129635"
    },
    {
      "nct_id": "NCT00590668",
      "title": "Safety Monitoring of Patients Having Pulmonary Vein Ablation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Atrial Fibrillation"
      ],
      "interventions": [
        {
          "name": "Transesophageal Echocardiography",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "The Cleveland Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 42,
      "start_date": "2004-05",
      "completion_date": "2013-04",
      "has_results": false,
      "last_update_posted_date": "2017-02-03",
      "last_synced_at": "2026-06-26T17:05:12.175Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00590668"
    },
    {
      "nct_id": "NCT05270499",
      "title": "Aveir VR Real-World Evidence Post-Approval Study",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cardiac Pacemaker",
        "Arrythmia",
        "Bradycardia"
      ],
      "interventions": [
        {
          "name": "Aveir VR Leadless Pacemaker 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": 3427,
      "start_date": "2022-06-21",
      "completion_date": "2034-09-30",
      "has_results": false,
      "last_update_posted_date": "2026-05-20",
      "last_synced_at": "2026-06-26T17:05:12.175Z",
      "location_count": 1,
      "location_summary": "Sylmar, California",
      "locations": [
        {
          "city": "Sylmar",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05270499"
    },
    {
      "nct_id": "NCT01695551",
      "title": "Brain Perfusion and Hemodynamic Stability in Patients Undergoing Radiofrequency Ablation of Ventricular Tachycardia",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Ventricular Tachycardia"
      ],
      "interventions": [
        {
          "name": "Data Collection Forms",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Dhanunjaya Lakkireddy, MD, FACC",
      "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": "2012-07",
      "completion_date": "2016-12",
      "has_results": false,
      "last_update_posted_date": "2017-01-09",
      "last_synced_at": "2026-06-26T17:05:12.175Z",
      "location_count": 1,
      "location_summary": "Kansas City, Kansas",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01695551"
    },
    {
      "nct_id": "NCT01426425",
      "title": "Intracardiac CrYoablation for AtrioVentricular Nodal Reentrant Tachycardia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "AtrioVentricular Nodal Reentrant Tachycardia",
        "Supraventricular Tachycardia",
        "Heart Disease"
      ],
      "interventions": [
        {
          "name": "Freezor Xtra Cryoablation Catheter",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Medtronic Cardiac Ablation Solutions",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 572,
      "start_date": "2012-05",
      "completion_date": "2016-09",
      "has_results": true,
      "last_update_posted_date": "2025-02-13",
      "last_synced_at": "2026-06-26T17:05:12.175Z",
      "location_count": 26,
      "location_summary": "Phoenix, Arizona • Santa Monica, California • Stanford, California + 23 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Santa Monica",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01426425"
    },
    {
      "nct_id": "NCT00001396",
      "title": "Natural History and Results of Dual Chamber (DDD) Pacemaker Therapy of Children With Obstructive Hypertrophic Cardiomyop...",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hypertrophic Cardiomyopathy"
      ],
      "interventions": [
        {
          "name": "Paragon Pacemaker",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "National Heart, Lung, and Blood Institute (NHLBI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "20 Years",
        "sex": "ALL",
        "summary": "5 Years to 20 Years"
      },
      "enrollment_count": 100,
      "start_date": "1993-10-06",
      "completion_date": "2008-07-23",
      "has_results": false,
      "last_update_posted_date": "2017-07-02",
      "last_synced_at": "2026-06-26T17:05:12.175Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00001396"
    },
    {
      "nct_id": "NCT05379101",
      "title": "Intracardiac Flow Assessment in Cardiac Amyloidosis",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Amyloidosis Cardiac",
        "Healthy Adults"
      ],
      "interventions": [
        {
          "name": "Cardiac magnetic resonance image (CMR)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Transthoracic Echocardiogram (TTE)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Six-minute Walk Test",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2022-07-20",
      "completion_date": "2026-06",
      "has_results": false,
      "last_update_posted_date": "2025-07-14",
      "last_synced_at": "2026-06-26T17:05:12.175Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05379101"
    },
    {
      "nct_id": "NCT02213666",
      "title": "Comparison of Intracardiac Echocardiography and Transesophageal Echocardiography",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Atrial Fibrillation",
        "Atrial Flutter"
      ],
      "interventions": [
        {
          "name": "Intracardiac Imaging",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Elad Anter",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 72,
      "start_date": "2012-01",
      "completion_date": "2014-05",
      "has_results": true,
      "last_update_posted_date": "2017-05-03",
      "last_synced_at": "2026-06-26T17:05:12.175Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02213666"
    }
  ]
}