{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=ESP+block",
    "query": {
      "intervention": "ESP block"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 33,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=ESP+block&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-06T06:23:01.554Z",
  "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": "NCT04074226",
      "title": "ESP vs QL for Total Abdominal Hysterectomy",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Postoperative Pain"
      ],
      "interventions": [
        {
          "name": "Erector Spinae Plane block",
          "type": "PROCEDURE"
        },
        {
          "name": "Quadratus Lumborum Block",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 80 Years · Female only"
      },
      "enrollment_count": 17,
      "start_date": "2021-03-20",
      "completion_date": "2023-03-21",
      "has_results": false,
      "last_update_posted_date": "2023-04-04",
      "last_synced_at": "2026-09-06T06:23:01.554Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04074226"
    },
    {
      "nct_id": "NCT05794828",
      "title": "Erector Spinae Regional Anesthesia for Pain Control",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Pain Management"
      ],
      "interventions": [
        {
          "name": "Bupivacaine Injection",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The University of Texas Health Science Center at San Antonio",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2023-09-15",
      "completion_date": "2025-02-18",
      "has_results": false,
      "last_update_posted_date": "2025-08-27",
      "last_synced_at": "2026-09-06T06:23:01.554Z",
      "location_count": 4,
      "location_summary": "Ridley Park, Pennsylvania • Upland, Pennsylvania • San Antonio, Texas + 1 more",
      "locations": [
        {
          "city": "Ridley Park",
          "state": "Pennsylvania"
        },
        {
          "city": "Upland",
          "state": "Pennsylvania"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        },
        {
          "city": "Temple",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05794828"
    },
    {
      "nct_id": "NCT05494125",
      "title": "Effects of Continuous ESP Catheters on Recovery, Pain and Opioid Consumption After Multilevel Spine Surgery",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Post Operative Pain",
        "Spine Surgery"
      ],
      "interventions": [
        {
          "name": "Ropivacaine",
          "type": "OTHER"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "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": 10,
      "start_date": "2022-09-14",
      "completion_date": "2024-03-18",
      "has_results": false,
      "last_update_posted_date": "2024-04-23",
      "last_synced_at": "2026-09-06T06:23:01.554Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05494125"
    },
    {
      "nct_id": "NCT04349774",
      "title": "Erector Spinae Plane Block vs Erector Spinae Plane Block With Serratus Anterior Plane Block in Thoracic Surgery",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Pain, Postoperative"
      ],
      "interventions": [
        {
          "name": "Control Group - ESP block with SAP block",
          "type": "DRUG"
        },
        {
          "name": "Treatment Group - ESP block with SAP normal saline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Anna Uskova",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 0,
      "start_date": "2022-10-01",
      "completion_date": "2023-12-30",
      "has_results": false,
      "last_update_posted_date": "2022-11-14",
      "last_synced_at": "2026-09-06T06:23:01.554Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04349774"
    },
    {
      "nct_id": "NCT05257941",
      "title": "ESP Block VS Intrathecal Opioid After Laparoscopic Colorectal Surgery",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Surgery"
      ],
      "interventions": [
        {
          "name": "IT Injection",
          "type": "DRUG"
        },
        {
          "name": "ESP Block",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Indiana University",
      "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": 116,
      "start_date": "2022-01-27",
      "completion_date": "2024-08-29",
      "has_results": true,
      "last_update_posted_date": "2026-03-02",
      "last_synced_at": "2026-09-06T06:23:01.554Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05257941"
    },
    {
      "nct_id": "NCT04770961",
      "title": "Erector Spinae Plane Block for Minimally Invasive Mitral Valve Surgery",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Mitral Regurgitation",
        "Mitral Valve Insufficiency",
        "Mitral Valve Prolapse"
      ],
      "interventions": [
        {
          "name": "Erector spinae plane catheter with 0.5% Ropivacaine",
          "type": "PROCEDURE"
        },
        {
          "name": "Erector spinae plane catheter with saline",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of California, San Francisco",
      "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": 50,
      "start_date": "2021-04-01",
      "completion_date": "2022-08-30",
      "has_results": false,
      "last_update_posted_date": "2021-03-03",
      "last_synced_at": "2026-09-06T06:23:01.554Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04770961"
    },
    {
      "nct_id": "NCT05856539",
      "title": "ESP Block in MIS Lumbar Spine Surgery",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Patients With Spinal Stenosis Indicated for MIS TLIF"
      ],
      "interventions": [
        {
          "name": "Erector spinae plane (ESP) block",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Hospital for Special Surgery, New York",
      "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": 48,
      "start_date": "2023-05-15",
      "completion_date": "2026-07-15",
      "has_results": false,
      "last_update_posted_date": "2025-10-06",
      "last_synced_at": "2026-09-06T06:23:01.554Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05856539"
    },
    {
      "nct_id": "NCT06199999",
      "title": "Erector Spinae Plane Block vs Local Infiltration Following Fusion Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Postoperative Delirium",
        "Pain, Postoperative",
        "Degenerative Disc Disease"
      ],
      "interventions": [
        {
          "name": "Erector Spinae Block",
          "type": "PROCEDURE"
        },
        {
          "name": "Local infiltration with local anesthetic",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Rashmi Mueller",
      "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": 29,
      "start_date": "2024-05-15",
      "completion_date": "2025-04-29",
      "has_results": false,
      "last_update_posted_date": "2026-02-13",
      "last_synced_at": "2026-09-06T06:23:01.554Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06199999"
    },
    {
      "nct_id": "NCT07174440",
      "title": "Contrast and Anesthetic Level With Lumbar Erector Spinae Plan (ESP) Block",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pain"
      ],
      "interventions": [
        {
          "name": "Ropivacaine (Epidural analgesia)",
          "type": "DRUG"
        },
        {
          "name": "Dexmedetomidine",
          "type": "DRUG"
        },
        {
          "name": "Iohexol",
          "type": "DRUG"
        },
        {
          "name": "QST Procedure",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "University Hospitals Cleveland Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "21 Years to 75 Years"
      },
      "enrollment_count": 32,
      "start_date": "2025-09-15",
      "completion_date": "2027-01-25",
      "has_results": false,
      "last_update_posted_date": "2026-03-11",
      "last_synced_at": "2026-09-06T06:23:01.554Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07174440"
    },
    {
      "nct_id": "NCT04807504",
      "title": "Ropivacaine Pharmacokinetics in ESP Blocks",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Local Anesthetic Systemic Toxicity",
        "Pain",
        "Quality of Recovery"
      ],
      "interventions": [
        {
          "name": "Ropivacaine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Thomas Jefferson University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2021-03-26",
      "completion_date": "2021-09-23",
      "has_results": false,
      "last_update_posted_date": "2025-09-09",
      "last_synced_at": "2026-09-06T06:23:01.554Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04807504"
    }
  ]
}