{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Nasal+Carbon+Dioxide",
    "query": {
      "intervention": "Nasal Carbon Dioxide"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 41,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Nasal+Carbon+Dioxide&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-28T09:50:59.340Z",
  "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": "NCT00917020",
      "title": "The Effect of Nasal Carbon Dioxide (CO2) Used As-Needed in the Symptomatic Treatment of Seasonal Allergic Rhinitis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Seasonal Allergic Rhinitis"
      ],
      "interventions": [
        {
          "name": "Nasal CO2",
          "type": "DRUG"
        },
        {
          "name": "Inactive Placebo Gas",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Capnia, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 32,
      "start_date": "2009-07",
      "completion_date": "2009-11",
      "has_results": false,
      "last_update_posted_date": "2012-08-15",
      "last_synced_at": "2026-09-28T09:50:59.340Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00917020"
    },
    {
      "nct_id": "NCT00690716",
      "title": "The Effect of Nasal Carbon Dioxide (CO2) in the Treatment of Mild Headache in People Who Experience Migraines",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Migraine"
      ],
      "interventions": [
        {
          "name": "Nasal CO2",
          "type": "DRUG"
        },
        {
          "name": "Inactive Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Capnia, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 292,
      "start_date": "2008-08",
      "completion_date": "2009-06",
      "has_results": false,
      "last_update_posted_date": "2012-08-15",
      "last_synced_at": "2026-09-28T09:50:59.340Z",
      "location_count": 15,
      "location_summary": "Birmingham, Alabama • Stanford, California • East Hartford, Connecticut + 12 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "East Hartford",
          "state": "Connecticut"
        },
        {
          "city": "West Palm Beach",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00690716"
    },
    {
      "nct_id": "NCT03670732",
      "title": "CPAP vs.Unsynchronized NIPPV at Equal Mean Airway Pressure",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Prematurity",
        "Respiratory Distress Syndrome",
        "Apnea of Prematurity"
      ],
      "interventions": [
        {
          "name": "continuous positive airway pressure",
          "type": "OTHER"
        },
        {
          "name": "nasal intermittent positive pressure ventilation",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Women and Infants Hospital of Rhode Island",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "6 Months",
        "sex": "ALL",
        "summary": "Up to 6 Months"
      },
      "enrollment_count": 52,
      "start_date": "2017-09-30",
      "completion_date": "2020-06-30",
      "has_results": false,
      "last_update_posted_date": "2024-07-30",
      "last_synced_at": "2026-09-28T09:50:59.340Z",
      "location_count": 1,
      "location_summary": "Providence, Rhode Island",
      "locations": [
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03670732"
    },
    {
      "nct_id": "NCT04993651",
      "title": "Effect of CPAP on Fetal pH at Scheduled C-section in Morbidly Obese Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Morbid Obesity",
        "Cesarean Delivery Affecting Fetus"
      ],
      "interventions": [
        {
          "name": "CPAP",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Eastern Virginia Medical School",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 66,
      "start_date": "2021-10-11",
      "completion_date": "2023-06-30",
      "has_results": false,
      "last_update_posted_date": "2024-09-19",
      "last_synced_at": "2026-09-28T09:50:59.340Z",
      "location_count": 1,
      "location_summary": "Norfolk, Virginia",
      "locations": [
        {
          "city": "Norfolk",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04993651"
    },
    {
      "nct_id": "NCT02381795",
      "title": "Pilot Study Evaluating the Use of Nasal Carbon Dioxide for the Treatment of Cluster Headache",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cluster Headache"
      ],
      "interventions": [
        {
          "name": "Nasal Carbon Dioxide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Cady, Roger, M.D.",
      "sponsor_class": "INDIV",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2015-07",
      "completion_date": "2017-04",
      "has_results": true,
      "last_update_posted_date": "2018-08-14",
      "last_synced_at": "2026-09-28T09:50:59.340Z",
      "location_count": 1,
      "location_summary": "Springfield, Missouri",
      "locations": [
        {
          "city": "Springfield",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02381795"
    },
    {
      "nct_id": "NCT03554629",
      "title": "A Comparison of Capnography Sampling Lines",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Capnography"
      ],
      "interventions": [
        {
          "name": "Capnography CO2 cannula sampling Flexiterline (CCSF) designs with supplemental O2",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Medtronic - MITG",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2018-05-01",
      "completion_date": "2020-09-15",
      "has_results": true,
      "last_update_posted_date": "2021-01-06",
      "last_synced_at": "2026-09-28T09:50:59.340Z",
      "location_count": 1,
      "location_summary": "Louisville, Colorado",
      "locations": [
        {
          "city": "Louisville",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03554629"
    },
    {
      "nct_id": "NCT00638755",
      "title": "The Effect of Nasal Carbon Dioxide (CO2) on Nasal Congestion in Subjects With Perennial Allergic Rhinitis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Perennial Allergic Rhinitis"
      ],
      "interventions": [
        {
          "name": "Nasal Carbon Dioxide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Capnia, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "19 Years to 65 Years"
      },
      "enrollment_count": 20,
      "start_date": "2008-02",
      "completion_date": "2008-07",
      "has_results": false,
      "last_update_posted_date": "2010-08-19",
      "last_synced_at": "2026-09-28T09:50:59.340Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00638755"
    },
    {
      "nct_id": "NCT03353064",
      "title": "Telemedicine for Improving Outcome in Inner City Patient Population With Hypercapneic Respiratory Failure",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hypercapnic Respiratory Failure",
        "Chronic Obstructive Pulmonary Disease",
        "Obesity Hypoventilation Syndrome",
        "Sleep Disordered Breathing",
        "Neuromuscular Diseases"
      ],
      "interventions": [
        {
          "name": "Vivify",
          "type": "OTHER"
        },
        {
          "name": "EMS",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Albert Einstein Healthcare Network",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 4,
      "start_date": "2017-10-18",
      "completion_date": "2018-10-26",
      "has_results": false,
      "last_update_posted_date": "2018-10-29",
      "last_synced_at": "2026-09-28T09:50:59.340Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03353064"
    },
    {
      "nct_id": "NCT00653471",
      "title": "Micro-stream Capnography in Non-intubated Lean and Obese Patients With and Without Obstructive Sleep Apnea",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Obesity",
        "Obstructive Sleep Apnea"
      ],
      "interventions": [
        {
          "name": "Microcapmicro-stream device with Smart CapnoLine Plus",
          "type": "DEVICE"
        },
        {
          "name": "Microcap micro-stream device with CapnoLine",
          "type": "DEVICE"
        },
        {
          "name": "TG-920 main-stream device (Nihon Kohden, Tokyo, Japan).",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "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": 60,
      "start_date": "2006-06",
      "completion_date": "2008-09",
      "has_results": false,
      "last_update_posted_date": "2016-07-20",
      "last_synced_at": "2026-09-28T09:50:59.340Z",
      "location_count": 1,
      "location_summary": "Louisville, Kentucky",
      "locations": [
        {
          "city": "Louisville",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00653471"
    },
    {
      "nct_id": "NCT03700606",
      "title": "Physiological Changes With High-Flow Nasal Cannula",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Respiratory Distress Syndrome in Premature Infant"
      ],
      "interventions": [
        {
          "name": "High flow nasal cannula",
          "type": "PROCEDURE"
        },
        {
          "name": "Nasal CPAP",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Sharp HealthCare",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "23 Weeks",
        "maximum_age": "28 Weeks",
        "sex": "ALL",
        "summary": "23 Weeks to 28 Weeks"
      },
      "enrollment_count": 80,
      "start_date": "2019-03-15",
      "completion_date": "2022-02-14",
      "has_results": true,
      "last_update_posted_date": "2026-04-17",
      "last_synced_at": "2026-09-28T09:50:59.340Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03700606"
    }
  ]
}