{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Pecs+I+%26+II+Block",
    "query": {
      "intervention": "Pecs I & II Block"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 11,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Pecs+I+%26+II+Block&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-09T05:11:16.418Z",
  "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": "NCT03143530",
      "title": "Effect of Pectoralis Block on Analgesia After Simple Mastectomy",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Mastectomy",
        "Nerve Block",
        "Analgesia, Postoperative"
      ],
      "interventions": [
        {
          "name": "Pectoralis block",
          "type": "PROCEDURE"
        },
        {
          "name": "Normal saline injection",
          "type": "DRUG"
        },
        {
          "name": "Ropivacaine Injection",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG"
      ],
      "sponsor": "Vanderbilt University 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": 0,
      "start_date": "2017-12",
      "completion_date": "2019-04-01",
      "has_results": false,
      "last_update_posted_date": "2018-08-14",
      "last_synced_at": "2026-09-09T05:11:16.418Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03143530"
    },
    {
      "nct_id": "NCT05171179",
      "title": "The Use of Pecs Blocks in Combination With Exparel in Breast Reconstruction Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Mammaplasty"
      ],
      "interventions": [
        {
          "name": "Breast Reconstruction (Mammaplasty)",
          "type": "PROCEDURE"
        },
        {
          "name": "Pecs blocks",
          "type": "DEVICE"
        },
        {
          "name": "Exparel",
          "type": "DRUG"
        },
        {
          "name": "Bupivacaine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DEVICE",
        "DRUG"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 60,
      "start_date": "2021-10-22",
      "completion_date": "2025-07-01",
      "has_results": false,
      "last_update_posted_date": "2025-09-24",
      "last_synced_at": "2026-09-09T05:11:16.418Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05171179"
    },
    {
      "nct_id": "NCT03743194",
      "title": "Pectoralis and Serratus Muscle Blocks",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Post Operative Pain Control"
      ],
      "interventions": [
        {
          "name": "Exparel 266 MG Per 20 ML Injection",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The Cleveland Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 210,
      "start_date": "2021-12-14",
      "completion_date": "2022-03-14",
      "has_results": true,
      "last_update_posted_date": "2025-10-23",
      "last_synced_at": "2026-09-09T05:11:16.418Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03743194"
    },
    {
      "nct_id": "NCT04979338",
      "title": "Development of Effective, Opioid Sparing Techniques for Peri-operative Pain Management of Transgender Patients Undergoing Gender Affirming Surgeries",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Gender Dysphoria"
      ],
      "interventions": [
        {
          "name": "Ultrasound guided Continuous Infraclavicular Brachial Plexus Block",
          "type": "OTHER"
        },
        {
          "name": "Ultrasound guided Continuous Femoral Nerve Block",
          "type": "OTHER"
        },
        {
          "name": "Ultrasound guided Pudendal Nerve Block",
          "type": "OTHER"
        },
        {
          "name": "Bupivacaine",
          "type": "DRUG"
        },
        {
          "name": "Bilateral ultrasound guided Transversus Abdominis Plane Block",
          "type": "OTHER"
        },
        {
          "name": "Bilateral spermatic cord block",
          "type": "OTHER"
        },
        {
          "name": "Pecs I & II Block",
          "type": "OTHER"
        },
        {
          "name": "Local anesthetic",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Cedars-Sinai 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": 640,
      "start_date": "2021-11-11",
      "completion_date": "2026-09-30",
      "has_results": false,
      "last_update_posted_date": "2025-09-17",
      "last_synced_at": "2026-09-09T05:11:16.418Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04979338"
    },
    {
      "nct_id": "NCT03653988",
      "title": "Comparison of Pre-op and Post-op Pectoralis Nerve Block",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer",
        "Postoperative Pain",
        "Anesthesia",
        "Nerve Block"
      ],
      "interventions": [
        {
          "name": "PEC I/II blocks by anesthesiologist - pre-operative",
          "type": "PROCEDURE"
        },
        {
          "name": "PEC I/II blocks by surgeon - intra-operative",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Melinda Seering",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 80 Years · Female only"
      },
      "enrollment_count": 34,
      "start_date": "2019-03-12",
      "completion_date": "2021-10-31",
      "has_results": true,
      "last_update_posted_date": "2024-08-16",
      "last_synced_at": "2026-09-09T05:11:16.418Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03653988"
    },
    {
      "nct_id": "NCT07527039",
      "title": "Pectoral Block in Breast Reduction for Pain Control",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Macromastia (Symptomatic)"
      ],
      "interventions": [
        {
          "name": "Pectoral II Nerve Block",
          "type": "PROCEDURE"
        },
        {
          "name": "Post Operative Pain Relievers",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG"
      ],
      "sponsor": "Carilion Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 75 Years · Female only"
      },
      "enrollment_count": 80,
      "start_date": "2026-04-01",
      "completion_date": "2028-05",
      "has_results": false,
      "last_update_posted_date": "2026-04-14",
      "last_synced_at": "2026-09-09T05:11:16.418Z",
      "location_count": 1,
      "location_summary": "Roanoke, Virginia",
      "locations": [
        {
          "city": "Roanoke",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07527039"
    },
    {
      "nct_id": "NCT03656679",
      "title": "Paravertebral Versus Pectoralis Block for Post Mastectomy Pain",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pain, Postoperative",
        "Post-Mastectomy Chronic Pain Syndrome",
        "Opioid Use"
      ],
      "interventions": [
        {
          "name": "Pectoralis Blockade (PECs)",
          "type": "PROCEDURE"
        },
        {
          "name": "Paravertebral Blockade",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "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": 18,
      "start_date": "2018-10-18",
      "completion_date": "2020-02-28",
      "has_results": false,
      "last_update_posted_date": "2021-05-03",
      "last_synced_at": "2026-09-09T05:11:16.418Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03656679"
    },
    {
      "nct_id": "NCT03899701",
      "title": "Effective Use of Pecs and Transversus Thoracics Plane Blocks for Subcutaneous Cardiac Pacemaker Insertion: A Case Series",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Anesthesia, Local"
      ],
      "interventions": [
        {
          "name": "PEC I and PEC II blocks",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Montefiore Medical Center",
      "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": 0,
      "start_date": "2021-11",
      "completion_date": "2022-03",
      "has_results": false,
      "last_update_posted_date": "2022-01-20",
      "last_synced_at": "2026-09-09T05:11:16.418Z",
      "location_count": 1,
      "location_summary": "The Bronx, New York",
      "locations": [
        {
          "city": "The Bronx",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03899701"
    },
    {
      "nct_id": "NCT03084536",
      "title": "PECS Block vs. Multimodal Analgesia for Prevention of Persistent Postoperative Pain in Breast Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer",
        "Breast Cancer Female",
        "Cancer of Breast"
      ],
      "interventions": [
        {
          "name": "Bupivacaine",
          "type": "DRUG"
        },
        {
          "name": "Gabapentin",
          "type": "DRUG"
        },
        {
          "name": "Celecoxib",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "Midazolam",
          "type": "DRUG"
        },
        {
          "name": "Fentanyl",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Washington University School of Medicine",
      "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": 134,
      "start_date": "2017-06-07",
      "completion_date": "2021-02-25",
      "has_results": true,
      "last_update_posted_date": "2024-12-24",
      "last_synced_at": "2026-09-09T05:11:16.418Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03084536"
    },
    {
      "nct_id": "NCT06574022",
      "title": "Post-mastectomy Recovery: Comparing Preoperative PECS-II Blocks With Intraoperative Pectoral Blocks",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Mastectomy; Lymphedema",
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Bupivacain",
          "type": "DRUG"
        },
        {
          "name": "Exparel",
          "type": "DRUG"
        },
        {
          "name": "Intraoperative Pecs II block (IOB) & superior AT (EX or BP)",
          "type": "PROCEDURE"
        },
        {
          "name": "Preoperative Pecs II block (POB) & superior AT (EX or BP)",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "University of Cincinnati",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2024-09-25",
      "completion_date": "2026-12-01",
      "has_results": false,
      "last_update_posted_date": "2025-11-04",
      "last_synced_at": "2026-09-09T05:11:16.418Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06574022"
    }
  ]
}