{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Heart+Failure+NYHA+Class+I",
    "query": {
      "condition": "Heart Failure NYHA Class I"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 4,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T09:45:34.041Z",
  "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": "NCT00267098",
      "title": "Biventricular Versus Right Ventricular Pacing in Heart Failure Patients With Atrioventricular Block (BLOCK HF)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Atrioventricular Block",
        "Heart Diseases"
      ],
      "interventions": [
        {
          "name": "Cardiac Resynchronization Therapy (CRT)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Medtronic Cardiac Rhythm and Heart Failure",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 918,
      "start_date": "2003-12",
      "completion_date": "2013-03",
      "has_results": true,
      "last_update_posted_date": "2014-03-26",
      "last_synced_at": "2026-05-22T09:45:34.041Z",
      "location_count": 51,
      "location_summary": "Anchorage, Alaska • Peoria, Arizona • Little Rock, Arkansas + 48 more",
      "locations": [
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Peoria",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Glendale",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00267098"
    },
    {
      "nct_id": "NCT03005184",
      "title": "Mechanism(s) Underlying Cardiovascular Effects of ARB/NEP Inhibition - Aim 2",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Heart Failure NYHA Class I",
        "Heart Failure NYHA Class II",
        "Heart Failure NYHA Class III"
      ],
      "interventions": [
        {
          "name": "Valsartan 80 mg bid",
          "type": "DRUG"
        },
        {
          "name": "Enalapril 10 mg bid",
          "type": "DRUG"
        },
        {
          "name": "Sacubitril-Valsartan 200 mg bid",
          "type": "DRUG"
        },
        {
          "name": "Icatibant",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 0,
      "start_date": "2017-09",
      "completion_date": "2020-01",
      "has_results": false,
      "last_update_posted_date": "2018-01-11",
      "last_synced_at": "2026-05-22T09:45:34.041Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03005184"
    },
    {
      "nct_id": "NCT04829617",
      "title": "Promoting Well-being and Health in Heart Failure",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure",
        "Heart Failure NYHA Class I",
        "Heart Failure NYHA Class II",
        "Heart Failure NYHA Class III"
      ],
      "interventions": [
        {
          "name": "PP-MI Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "MI-alone Intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 280,
      "start_date": "2021-11-29",
      "completion_date": "2027-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-04-14",
      "last_synced_at": "2026-05-22T09:45:34.041Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04829617"
    },
    {
      "nct_id": "NCT03035565",
      "title": "Cognitive Intervention to Improve Memory in Heart Failure Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure NYHA Class II",
        "Heart Failure NYHA Class III",
        "Heart Failure NYHA Class I"
      ],
      "interventions": [
        {
          "name": "Computerized Cognitive Training with Brain HQ",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Computerized Crossword Puzzles",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 276,
      "start_date": "2017-02-22",
      "completion_date": "2021-09-30",
      "has_results": false,
      "last_update_posted_date": "2023-02-17",
      "last_synced_at": "2026-05-22T09:45:34.041Z",
      "location_count": 2,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03035565"
    }
  ]
}