{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Photoplethysmography",
    "query": {
      "intervention": "Photoplethysmography"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 42,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Photoplethysmography&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-05T19:31:19.533Z",
  "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": "NCT04885062",
      "title": "Belun Ring Platform With an Improved Algorithm for OSA Assessment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep-Disordered Breathing",
        "Sleep Architecture"
      ],
      "interventions": [
        {
          "name": "Belun Ring",
          "type": "DEVICE"
        },
        {
          "name": "PSG",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Belun Technology Company Limited",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 136,
      "start_date": "2021-02-01",
      "completion_date": "2022-06-30",
      "has_results": true,
      "last_update_posted_date": "2026-04-13",
      "last_synced_at": "2026-09-05T19:31:19.533Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04885062"
    },
    {
      "nct_id": "NCT05465018",
      "title": "Performance Assessment Study VitalSigns Camera",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy Humans",
        "Vital Signs Monitoring"
      ],
      "interventions": [
        {
          "name": "Happy Flow / Baseline",
          "type": "DEVICE"
        },
        {
          "name": "Make-up",
          "type": "DEVICE"
        },
        {
          "name": "Sunglasses",
          "type": "DEVICE"
        },
        {
          "name": "Face mask",
          "type": "DEVICE"
        },
        {
          "name": "Minimum requirements camera",
          "type": "DEVICE"
        },
        {
          "name": "Worst case hardware",
          "type": "DEVICE"
        },
        {
          "name": "Damaged lens",
          "type": "DEVICE"
        },
        {
          "name": "Face or chest outside test frame",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Philips Clinical & Medical Affairs Global",
      "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": "2022-07-07",
      "completion_date": "2022-09-30",
      "has_results": false,
      "last_update_posted_date": "2022-08-18",
      "last_synced_at": "2026-09-05T19:31:19.533Z",
      "location_count": 1,
      "location_summary": "Cambridge, Massachusetts",
      "locations": [
        {
          "city": "Cambridge",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05465018"
    },
    {
      "nct_id": "NCT05830773",
      "title": "Resonance Breathing Intervention Opioid Use Disorder",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Substance-Related Disorders"
      ],
      "interventions": [
        {
          "name": "Resonance Breathing Exercises",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Texas at Austin",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2021-03-09",
      "completion_date": "2023-08-31",
      "has_results": false,
      "last_update_posted_date": "2024-01-09",
      "last_synced_at": "2026-09-05T19:31:19.533Z",
      "location_count": 1,
      "location_summary": "Austin, Texas",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05830773"
    },
    {
      "nct_id": "NCT07362641",
      "title": "Clinical Validation of Non-Contact Vital Signs",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Vital Sign Evaluation"
      ],
      "interventions": [
        {
          "name": "SmartSpectra Vital Signs Monitor measurement",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Presage Technologies, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 111,
      "start_date": "2025-03-28",
      "completion_date": "2025-04-21",
      "has_results": true,
      "last_update_posted_date": "2026-08-24",
      "last_synced_at": "2026-09-05T19:31:19.533Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07362641"
    },
    {
      "nct_id": "NCT06897670",
      "title": "Identifying Cerebral Hemodynamic Patterns in Mood Disorders and Mild Cognitive Impairment: A Functional Near-Infrared Spectroscopy (fNIRS) Study",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Major Depressive Disorder",
        "Bipolar Disorder",
        "Mild Cognitive Impairment"
      ],
      "interventions": [
        {
          "name": "Observational assessment using functional near-infrared spectroscopy (fNIRS), a noninvasive, portable brain imaging tool that measures changes in brain blood flow and oxygen levels.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 200,
      "start_date": "2025-03-26",
      "completion_date": "2028-03-30",
      "has_results": false,
      "last_update_posted_date": "2026-04-29",
      "last_synced_at": "2026-09-05T19:31:19.533Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06897670"
    },
    {
      "nct_id": "NCT05795842",
      "title": "DELTA (Detecting and Predicting Atrial Fibrillation in Post-Stroke Patients)",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Stroke, Ischemic"
      ],
      "interventions": [
        {
          "name": "wearable wristband model",
          "type": "DEVICE"
        },
        {
          "name": "Samsung Galaxy Watch 6",
          "type": "OTHER"
        },
        {
          "name": "Standard of care extended ECG monitoring",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "55 Years and older"
      },
      "enrollment_count": 500,
      "start_date": "2023-03-21",
      "completion_date": "2028-12",
      "has_results": false,
      "last_update_posted_date": "2026-01-21",
      "last_synced_at": "2026-09-05T19:31:19.533Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05795842"
    },
    {
      "nct_id": "NCT07122947",
      "title": "Surveillance Trial of the Apple Watch in Reliable Burden Assessment in Unseen Recurrence of Surgically Treated AF",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Atrial Fibrillation"
      ],
      "interventions": [
        {
          "name": "Apple Watch: AFib History",
          "type": "DEVICE"
        },
        {
          "name": "Zio Patch",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "The Cleveland Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "22 Years and older"
      },
      "enrollment_count": 75,
      "start_date": "2025-06-02",
      "completion_date": "2027-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-08-14",
      "last_synced_at": "2026-09-05T19:31:19.533Z",
      "location_count": 2,
      "location_summary": "St Louis, Missouri • Cleveland, Ohio",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07122947"
    },
    {
      "nct_id": "NCT04665011",
      "title": "Validation of Indicor Photoplethysmography (PPG) Valsalva Pulse Response vs Non-invasive Blood Pressure",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Indicor",
          "type": "DEVICE"
        },
        {
          "name": "Caretaker",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Vixiar Medical, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 121,
      "start_date": "2020-12-14",
      "completion_date": "2021-01-28",
      "has_results": false,
      "last_update_posted_date": "2021-03-16",
      "last_synced_at": "2026-09-05T19:31:19.533Z",
      "location_count": 1,
      "location_summary": "Norfolk, Virginia",
      "locations": [
        {
          "city": "Norfolk",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04665011"
    },
    {
      "nct_id": "NCT02978560",
      "title": "Indocyanine Green Tissue Perfusion Monitoring",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Regional Blood Flow",
        "Wound Heal"
      ],
      "interventions": [
        {
          "name": "fluorescence-mediated photoplethysmography",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "University of Maryland, Baltimore",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2018-03-05",
      "completion_date": "2018-07-01",
      "has_results": false,
      "last_update_posted_date": "2024-11-27",
      "last_synced_at": "2026-09-05T19:31:19.533Z",
      "location_count": 1,
      "location_summary": "Towson, Maryland",
      "locations": [
        {
          "city": "Towson",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02978560"
    },
    {
      "nct_id": "NCT07240831",
      "title": "Accuracy of a Cuffless Photoplethysmography (PPG) Chest-Patch Monitor for 24-hour Ambulatory Blood Pressure Monitoring (ABPM)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Blood Pressure",
        "Heart Disease",
        "Hypertension (HTN)",
        "Blood Pressure Monitoring"
      ],
      "interventions": [
        {
          "name": "Model BB-613WP",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Biobeat Technologies Ltd.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 600,
      "start_date": "2025-12-15",
      "completion_date": "2026-10-30",
      "has_results": false,
      "last_update_posted_date": "2026-08-13",
      "last_synced_at": "2026-09-05T19:31:19.533Z",
      "location_count": 6,
      "location_summary": "Birmingham, Alabama • Scottsdale, Arizona • Jacksonville, Florida + 3 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07240831"
    }
  ]
}