{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=2-hour+Holter+Monitor",
    "query": {
      "intervention": "2-hour Holter Monitor"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 14,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=2-hour+Holter+Monitor&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-01T16:09:37.254Z",
  "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": "NCT02383667",
      "title": "Clinical Comparison of Electrocardiograms Collected Using an Ambulatory Holter",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Electrocardiography"
      ],
      "interventions": [
        {
          "name": "Electrocardiogram holter",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Toledo Health Science Campus",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2013-03",
      "completion_date": "2015-05",
      "has_results": true,
      "last_update_posted_date": "2019-10-07",
      "last_synced_at": "2026-09-01T16:09:37.254Z",
      "location_count": 1,
      "location_summary": "Toledo, Ohio",
      "locations": [
        {
          "city": "Toledo",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02383667"
    },
    {
      "nct_id": "NCT04002531",
      "title": "A One Visit Follow Up of Adults With Fabry Disease Who Started Long-term Enzyme Replacement Therapy As Children",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Quality of Life",
        "Renal Insufficiency",
        "Cardiac Event"
      ],
      "interventions": [
        {
          "name": "General and Neurological examination",
          "type": "OTHER"
        },
        {
          "name": "Vital signs",
          "type": "OTHER"
        },
        {
          "name": "12 lead electrocardiogram",
          "type": "PROCEDURE"
        },
        {
          "name": "Echocardiogram",
          "type": "PROCEDURE"
        },
        {
          "name": "Blood draw",
          "type": "PROCEDURE"
        },
        {
          "name": "Urine collection",
          "type": "PROCEDURE"
        },
        {
          "name": "2-hour Holter Monitor",
          "type": "PROCEDURE"
        },
        {
          "name": "Brief Pain Inventory questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Quality of Life questionnaire",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "PROCEDURE"
      ],
      "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": 5,
      "start_date": "2018-11-10",
      "completion_date": "2019-12-13",
      "has_results": false,
      "last_update_posted_date": "2026-03-04",
      "last_synced_at": "2026-09-01T16:09:37.254Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04002531"
    },
    {
      "nct_id": "NCT01328054",
      "title": "A Study in Cancer Patients to Evaluate the Effect of Lapatinib on the QTc Interval",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Cancer"
      ],
      "interventions": [
        {
          "name": "lapatinib",
          "type": "DRUG"
        },
        {
          "name": "placebo matching lapatinib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 58,
      "start_date": "2011-12",
      "completion_date": "2015-03",
      "has_results": true,
      "last_update_posted_date": "2016-06-08",
      "last_synced_at": "2026-09-01T16:09:37.254Z",
      "location_count": 4,
      "location_summary": "Detroit, Michigan • Lebanon, New Hampshire • Durham, North Carolina + 1 more",
      "locations": [
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "Lebanon",
          "state": "New Hampshire"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01328054"
    },
    {
      "nct_id": "NCT02253420",
      "title": "COPANLISIB (BAY80-6946) Drug-drug Interaction and Cardiovascular Safety Study in Advanced Solid Tumor and Non-Hodgkin's Lymphoma Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Medical Oncology"
      ],
      "interventions": [
        {
          "name": "Copanlisib (BAY80-6946)",
          "type": "DRUG"
        },
        {
          "name": "Itraconazole",
          "type": "DRUG"
        },
        {
          "name": "Rifampin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bayer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 51,
      "start_date": "2014-10-08",
      "completion_date": "2019-08-13",
      "has_results": false,
      "last_update_posted_date": "2020-12-14",
      "last_synced_at": "2026-09-01T16:09:37.254Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02253420"
    },
    {
      "nct_id": "NCT02725060",
      "title": "Autoimmune Basis for Postural Tachycardia Syndrome",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Postural Orthostatic Tachycardia Syndrome",
        "Postural Tachycardia Syndrome",
        "Tachycardia",
        "Arrhythmias, Cardiac",
        "Autonomic Nervous System Diseases",
        "Orthostatic Intolerance",
        "Cardiovascular Diseases",
        "Primary Dysautonomias"
      ],
      "interventions": [
        {
          "name": "phenylephrine",
          "type": "DRUG"
        },
        {
          "name": "isoproterenol",
          "type": "DRUG"
        },
        {
          "name": "25 micro-Ci of radiation",
          "type": "RADIATION"
        },
        {
          "name": "Posture study with blood samples",
          "type": "PROCEDURE"
        },
        {
          "name": "24-hour heart rhythm and blood pressure monitoring",
          "type": "PROCEDURE"
        },
        {
          "name": "Quantitative Axonal Sudomotor Reflex Testing",
          "type": "PROCEDURE"
        },
        {
          "name": "Autonomic function tests",
          "type": "PROCEDURE"
        },
        {
          "name": "Rebreathing test",
          "type": "OTHER"
        },
        {
          "name": "Assessment of splanchnic capacitance",
          "type": "OTHER"
        },
        {
          "name": "microneurography",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "RADIATION",
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 58,
      "start_date": "2016-02",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2025-11-12",
      "last_synced_at": "2026-09-01T16:09:37.254Z",
      "location_count": 2,
      "location_summary": "Oklahoma City, Oklahoma • Nashville, Tennessee",
      "locations": [
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02725060"
    },
    {
      "nct_id": "NCT04086017",
      "title": "Teaching Caregivers of Hospice Patients to Administer Reiki",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hospice",
        "Pain",
        "Anxiety",
        "Stress"
      ],
      "interventions": [
        {
          "name": "Reiki therapy",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2020-10-01",
      "completion_date": "2021-08-31",
      "has_results": false,
      "last_update_posted_date": "2024-12-17",
      "last_synced_at": "2026-09-01T16:09:37.254Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04086017"
    },
    {
      "nct_id": "NCT03177681",
      "title": "The Effect of Yogurt in Cancer Patient With Moderate Gastrointestinal (GI) Symptoms",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Malignant Neoplasms of Independent (Primary) Multiple Sites"
      ],
      "interventions": [
        {
          "name": "Tongue Assessment",
          "type": "OTHER"
        },
        {
          "name": "Stool Sample",
          "type": "OTHER"
        },
        {
          "name": "Questionnaires",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Holter Monitor",
          "type": "DEVICE"
        },
        {
          "name": "Yogurt",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BEHAVIORAL",
        "DEVICE"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2022-03-01",
      "completion_date": "2023-03-21",
      "has_results": false,
      "last_update_posted_date": "2023-03-27",
      "last_synced_at": "2026-09-01T16:09:37.254Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03177681"
    },
    {
      "nct_id": "NCT01382953",
      "title": "The Simple ECG Monitoring Trial (Comparison of a Novel Recording System With a Standard Holter Monitor)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Syncope",
        "Pre-syncope",
        "Atrial Fibrillation",
        "Supraventricular Tachycardia"
      ],
      "interventions": [
        {
          "name": "Standard Holter/Investigational patch",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Seattle Institute for Cardiac Research",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2011-08",
      "completion_date": "2011-10",
      "has_results": false,
      "last_update_posted_date": "2012-01-10",
      "last_synced_at": "2026-09-01T16:09:37.254Z",
      "location_count": 2,
      "location_summary": "Chicago, Illinois • Enumclaw, Washington",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Enumclaw",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01382953"
    },
    {
      "nct_id": "NCT01568177",
      "title": "Cardiac Autonomic Function in Women with Microvascular Coronary Dysfunction",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Microvascular Coronary Dysfunction"
      ],
      "interventions": [
        {
          "name": "Mental Stress Testing",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Peripheral Arterial Tonometry (PAT) Testing",
          "type": "OTHER"
        },
        {
          "name": "Heart Rate Variability (HRV)",
          "type": "OTHER"
        },
        {
          "name": "RESPeRATE Breathing Trial",
          "type": "OTHER"
        },
        {
          "name": "SPECT cardiac scan with 123I-mIBG and Myoview",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Cedars-Sinai Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 105,
      "start_date": "2011-02",
      "completion_date": "2024-02",
      "has_results": false,
      "last_update_posted_date": "2024-09-19",
      "last_synced_at": "2026-09-01T16:09:37.254Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01568177"
    },
    {
      "nct_id": "NCT00993369",
      "title": "Heart Rate Variability in Children Conceived Via Assisted Reproductive Technologies",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Neuro Developmental Delay"
      ],
      "interventions": [
        {
          "name": "Holter monitor",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "1 Day",
        "sex": "ALL",
        "summary": "Up to 1 Day"
      },
      "enrollment_count": 60,
      "start_date": "2006-07",
      "completion_date": "2010-07",
      "has_results": false,
      "last_update_posted_date": "2016-11-10",
      "last_synced_at": "2026-09-01T16:09:37.254Z",
      "location_count": 1,
      "location_summary": "Salt LakeCity, Utah",
      "locations": [
        {
          "city": "Salt LakeCity",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00993369"
    }
  ]
}