{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Subarachnoid+Block&page=4",
    "query": {
      "condition": "Subarachnoid Block",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 87,
    "total_pages": 9,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Subarachnoid+Block&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Subarachnoid+Block&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-23T00:01:45.812Z",
  "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": "NCT01701102",
      "title": "Study to Find Optimal Dose of Local Spinal Anesthetic (Mepivacaine) Combined With Narcotic (Fentanyl) For Knee Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Arthroscopic Knee Surgery"
      ],
      "interventions": [
        {
          "name": "Mepivacaine (24 mg) plus fentanyl",
          "type": "PROCEDURE"
        },
        {
          "name": "Mepivacaine (27 mg) plus fentanyl",
          "type": "PROCEDURE"
        },
        {
          "name": "Mepivacaine (30 mg) plus fentanyl",
          "type": "PROCEDURE"
        },
        {
          "name": "Mepivacaine",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Hospital for Special Surgery, New York",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 56,
      "start_date": "2011-12",
      "completion_date": "2013-12",
      "has_results": true,
      "last_update_posted_date": "2016-04-05",
      "last_synced_at": "2026-10-23T00:01:45.812Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01701102"
    },
    {
      "nct_id": "NCT07577739",
      "title": "Noninvasive CA Monitoring Validation and Autonomic Modulation in Aneurysmal Subarachnoid Hemorrhage",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Subarachnoid Hemorrhage, Aneurysmal",
        "Delayed Cerebral Ischemia",
        "Cerebral Vasospasm",
        "Autonomic Nervous System Diseases"
      ],
      "interventions": [
        {
          "name": "Right-Sided Cervical Sympathetic Block at C6",
          "type": "PROCEDURE"
        },
        {
          "name": "Transcutaneous Auricular Vagal Nerve Stimulation (taVNS)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DEVICE"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 300,
      "start_date": "2027-07",
      "completion_date": "2030-06",
      "has_results": false,
      "last_update_posted_date": "2026-10-16",
      "last_synced_at": "2026-10-23T00:01:45.812Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07577739"
    },
    {
      "nct_id": "NCT02146898",
      "title": "The Severity Of Hypotension Comparing Three Positions During Spinal Anesthesia For Cesarean Delivery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hypotension"
      ],
      "interventions": [
        {
          "name": "Position",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Beth Israel Deaconess Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 50 Years · Female only"
      },
      "enrollment_count": 105,
      "start_date": "2013-09",
      "completion_date": "2016-12",
      "has_results": false,
      "last_update_posted_date": "2017-01-04",
      "last_synced_at": "2026-10-23T00:01:45.812Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02146898"
    },
    {
      "nct_id": "NCT02818894",
      "title": "Spinal Anesthesia in Total Hip Arthroplasty",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Total Hip Arthroplasty"
      ],
      "interventions": [
        {
          "name": "Lidocaine",
          "type": "DRUG"
        },
        {
          "name": "Bupivacaine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Thomas L Bradbury",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 135,
      "start_date": "2016-09-27",
      "completion_date": "2020-03-05",
      "has_results": true,
      "last_update_posted_date": "2022-09-23",
      "last_synced_at": "2026-10-23T00:01:45.812Z",
      "location_count": 2,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02818894"
    },
    {
      "nct_id": "NCT05354791",
      "title": "Pre-post Spinal Popliteal Block",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Foot Surgery",
        "Ankle Surgery"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Hospital for Special Surgery, New York",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 1500,
      "start_date": "2021-05-01",
      "completion_date": "2023-03-01",
      "has_results": false,
      "last_update_posted_date": "2024-05-01",
      "last_synced_at": "2026-10-23T00:01:45.812Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05354791"
    },
    {
      "nct_id": "NCT01192074",
      "title": "Use of Ultrasound in Obstetric Neuraxial Analgesia and Anesthesia Data Base",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pregnancy"
      ],
      "interventions": [
        {
          "name": "Ultrasound",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Missouri-Columbia",
      "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": 250,
      "start_date": "2010-01",
      "completion_date": "2012-09",
      "has_results": false,
      "last_update_posted_date": "2016-09-05",
      "last_synced_at": "2026-10-23T00:01:45.812Z",
      "location_count": 1,
      "location_summary": "Columbia, Missouri",
      "locations": [
        {
          "city": "Columbia",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01192074"
    },
    {
      "nct_id": "NCT04331938",
      "title": "Efficacy of Percutaneous SPG Block in Aneurysmal SAH",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Subarachnoid Hemorrhage",
        "Headache"
      ],
      "interventions": [
        {
          "name": "Regional anesthetic SPG block-bilateral",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2,
      "start_date": "2020-11-01",
      "completion_date": "2024-04-08",
      "has_results": false,
      "last_update_posted_date": "2024-04-09",
      "last_synced_at": "2026-10-23T00:01:45.812Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04331938"
    },
    {
      "nct_id": "NCT05444751",
      "title": "GA + ESP vs. SA + ESP in Lumbar Decompression Surgeries",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Lumbar Disc Herniation",
        "Lumbar Disc Disease",
        "Lumbar Radiculopathy"
      ],
      "interventions": [
        {
          "name": "General anesthetic",
          "type": "DRUG"
        },
        {
          "name": "SA + ESP",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Hospital for Special Surgery, New York",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 142,
      "start_date": "2022-03-22",
      "completion_date": "2026-09",
      "has_results": false,
      "last_update_posted_date": "2026-04-28",
      "last_synced_at": "2026-10-23T00:01:45.812Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05444751"
    },
    {
      "nct_id": "NCT01622647",
      "title": "The Effect of Nasal Continuous Positive Airway Pressure (N-CPAP) on Arterial pCO2 During Spinal Anesthesia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Knee Replacement Surgery"
      ],
      "interventions": [
        {
          "name": "Nasal Continuous Positive Airway Pressure (NCPAP)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Pediatrix",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "69 Years",
        "sex": "ALL",
        "summary": "21 Years to 69 Years"
      },
      "enrollment_count": 40,
      "start_date": "2012-07",
      "completion_date": "2013-08",
      "has_results": false,
      "last_update_posted_date": "2013-09-06",
      "last_synced_at": "2026-10-23T00:01:45.812Z",
      "location_count": 1,
      "location_summary": "Wilmington, North Carolina",
      "locations": [
        {
          "city": "Wilmington",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01622647"
    },
    {
      "nct_id": "NCT02980926",
      "title": "Mepivacaine vs. Bupivacaine Spinal Anesthetic in Total Knee Arthroplasty",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Anesthesia, Spinal",
        "Arthroplasty, Replacement, Knee",
        "Pain Management",
        "Early Ambulation",
        "Ambulatory Surgical Procedures"
      ],
      "interventions": [
        {
          "name": "Mepivacaine",
          "type": "DRUG"
        },
        {
          "name": "Bupivacaine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Henry Ford Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "40 Years to 90 Years"
      },
      "enrollment_count": 32,
      "start_date": "2016-12",
      "completion_date": "2017-03",
      "has_results": false,
      "last_update_posted_date": "2017-03-27",
      "last_synced_at": "2026-10-23T00:01:45.812Z",
      "location_count": 1,
      "location_summary": "West Bloomfield, Michigan",
      "locations": [
        {
          "city": "West Bloomfield",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02980926"
    }
  ]
}