{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Adult+Patient+Undergoing+Major+Surgery",
    "query": {
      "condition": "Adult Patient Undergoing Major Surgery"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 6,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-23T09:33:05.120Z",
  "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": "NCT00762398",
      "title": "Evaluation of the Accuracy and Precision of the Masimo Labs Pulse-Hemoglobin-Meter Monitor in Surgical Patients",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Adult Patient Undergoing Major Surgery"
      ],
      "interventions": [
        {
          "name": "Masimo hemoglobin-meter",
          "type": "DEVICE"
        },
        {
          "name": "drawing blood sample",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "BIOLOGICAL"
      ],
      "sponsor": "University of California, Irvine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2008-09",
      "completion_date": "2011-12",
      "has_results": false,
      "last_update_posted_date": "2021-03-29",
      "last_synced_at": "2026-07-23T09:33:05.120Z",
      "location_count": 1,
      "location_summary": "Orange, California",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00762398"
    },
    {
      "nct_id": "NCT07442981",
      "title": "Preoperative Dietary Fat Consumption and Baseline Inflammatory Markers",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Fat Consumption",
        "Inflammatory Markers"
      ],
      "interventions": [
        {
          "name": "Inflammatory markers test in blood prior to surgery",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Inflammatory markers test in CSF (cerebrospinal fluid)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "MOCA test",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "CAM-3D",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 62,
      "start_date": "2025-03-25",
      "completion_date": "2026-01-30",
      "has_results": false,
      "last_update_posted_date": "2026-03-02",
      "last_synced_at": "2026-07-23T09:33:05.120Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07442981"
    },
    {
      "nct_id": "NCT06702553",
      "title": "Nitric Oxide for Reduced Intensive Support in Cardiac Surgery With Cardiopulmonary Bypass",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Nitric Oxide",
        "Cardiac Surgery",
        "Cardiopulmonary Bypass",
        "Adult Patients Undergoing Cardiovascular Surgery With Cardiopulmonary Bypass"
      ],
      "interventions": [
        {
          "name": "Nitric Oxide Gas",
          "type": "DRUG"
        },
        {
          "name": "Standard Care Arm",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Xijing Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3650,
      "start_date": "2025-05-19",
      "completion_date": "2029-03-31",
      "has_results": false,
      "last_update_posted_date": "2026-05-29",
      "last_synced_at": "2026-07-23T09:33:05.120Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06702553"
    },
    {
      "nct_id": "NCT06988176",
      "title": "Frailty and Muscle Strength Tests in Older Adults Undergoing Major Surgery",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Frailty",
        "Sarcopenia",
        "Sarcopenia in Elderly",
        "Muscle Strength",
        "Post Operative Complications",
        "Nutrition Assessment",
        "Risk Assessment",
        "Elderly (People Aged 65 or More)",
        "Hand Strength"
      ],
      "interventions": [
        {
          "name": "Frailty assessment, nutrition assessment, cognition assessment, muscle strength testing",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2025-06-19",
      "completion_date": "2026-08",
      "has_results": false,
      "last_update_posted_date": "2026-01-28",
      "last_synced_at": "2026-07-23T09:33:05.120Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06988176"
    },
    {
      "nct_id": "NCT02356471",
      "title": "Consumer-Based Activity Monitor in Evaluating and Measuring Activity of Older Patients With Abdominal Cancer Undergoing Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Malignant Gastrointestinal Neoplasm",
        "Malignant Peritoneal Neoplasm"
      ],
      "interventions": [
        {
          "name": "Management of Therapy Complications Fitbit Zip (portable pedometer device)",
          "type": "DEVICE"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "60 Years to 90 Years"
      },
      "enrollment_count": 34,
      "start_date": "2015-03",
      "completion_date": "2016-10",
      "has_results": true,
      "last_update_posted_date": "2018-09-27",
      "last_synced_at": "2026-07-23T09:33:05.120Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02356471"
    },
    {
      "nct_id": "NCT03152461",
      "title": "Evaluation of the Clinical Performance of the Quantra System With the Quantra Surgical Cartridge",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Blood Loss, Surgical"
      ],
      "interventions": [
        {
          "name": "Quantra System",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "HemoSonics LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 302,
      "start_date": "2017-05-23",
      "completion_date": "2018-02-09",
      "has_results": false,
      "last_update_posted_date": "2018-07-31",
      "last_synced_at": "2026-07-23T09:33:05.120Z",
      "location_count": 4,
      "location_summary": "Baltimore, Maryland • Durham, North Carolina • Charleston, South Carolina + 1 more",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Charleston",
          "state": "South Carolina"
        },
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03152461"
    }
  ]
}