{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Doppler+fetal+heart+rate+monitor",
    "query": {
      "intervention": "Doppler fetal heart rate monitor"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 3,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-30T20:22:26.282Z",
  "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": "NCT04232215",
      "title": "Medical Grade, Smartphone-based, Fetal Heart Rate Monitor for Outpatient Use",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pregnancy Related"
      ],
      "interventions": [
        {
          "name": "HeraBEAT™",
          "type": "DEVICE"
        },
        {
          "name": "Doppler fetal heart rate monitor",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 59,
      "start_date": "2021-02-03",
      "completion_date": "2022-08-31",
      "has_results": true,
      "last_update_posted_date": "2023-03-20",
      "last_synced_at": "2026-09-30T20:22:26.282Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04232215"
    },
    {
      "nct_id": "NCT06835647",
      "title": "Maternal Fetal Device Performance Twins",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pregnancy"
      ],
      "interventions": [
        {
          "name": "Investigational Fetal Monitor",
          "type": "DEVICE"
        },
        {
          "name": "Ultrasound Imaging Device",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "GE Healthcare",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 18,
      "start_date": "2025-01-21",
      "completion_date": "2025-12-31",
      "has_results": true,
      "last_update_posted_date": "2026-09-22",
      "last_synced_at": "2026-09-30T20:22:26.282Z",
      "location_count": 1,
      "location_summary": "Louisville, Colorado",
      "locations": [
        {
          "city": "Louisville",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06835647"
    },
    {
      "nct_id": "NCT01177553",
      "title": "Randomized Clinical Trial: Expectant Management vs Laser Treatment of Monochorionic Twins With Severe Selective Intrauterine Growth Retardation and Absent or Reverse Diastolic Flow in the Umbilical Artery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Intrauterine Growth Retardation"
      ],
      "interventions": [
        {
          "name": "selective laser photocoagulation of communicating vessels",
          "type": "PROCEDURE"
        },
        {
          "name": "Expected Management",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DEVICE"
      ],
      "sponsor": "University of South Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 55 Years · Female only"
      },
      "enrollment_count": 5,
      "start_date": "2007-05",
      "completion_date": "2009-02",
      "has_results": true,
      "last_update_posted_date": "2013-02-21",
      "last_synced_at": "2026-09-30T20:22:26.282Z",
      "location_count": 2,
      "location_summary": "Los Angeles, California • Tampa, Florida",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01177553"
    }
  ]
}