[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100634542":3},{"organization":4,"armGroups":7,"interventions":18,"overallOfficials":26,"centralContacts":30,"locations":38,"responsibleParty":55,"collaborators":59,"id":60,"slug":59,"hasResults":61,"nctId":62,"briefTitle":63,"officialTitle":64,"acronym":59,"eligibilityCriteria":65,"healthyVolunteers":61,"sex":66,"minAge":67,"maxAge":68,"enrollmentInfo":69,"targetDuration":59,"studyType":72,"phases":73,"briefSummary":75,"conditions":76,"keywords":79,"overallStatus":41,"whyStopped":59,"lastUpdateSubmitDate":80,"lastUpdatePostDateStruct":81,"startDateStruct":84,"completionDateStruct":86,"leadSponsor":88,"locationsCount":89},{"fullName":5,"class":6},"Kocaeli City Hospital","OTHER_GOV",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"SPSIP Block","ACTIVE_COMPARATOR","Participants will receive an ultrasound-guided serratus posterior superior intercostal plane block (SPSIPB) with 30 mL of 0.25% bupivacaine prior to induction of general anesthesia.",[13],"Procedure: Serratus Posterior Superior Intercostal Plane Block",{"label":15,"type":10,"description":16,"interventionNames":17},"ESPB Block","Participants will receive an ultrasound-guided erector spinae plane block (ESPB) with 30 mL of 0.25% bupivacaine prior to induction of general anesthesia.",[13],[19],{"type":20,"name":21,"description":22,"armGroupLabels":23,"otherNames":24},"PROCEDURE","Serratus Posterior Superior Intercostal Plane Block","An ultrasound-guided interfascial plane block performed between the serratus posterior superior muscle and the underlying ribs prior to general anesthesia.",[15,9],[25],"SPSIPB",[27],{"name":28,"affiliation":5,"role":29},"Engin Çetin, M.D","PRINCIPAL_INVESTIGATOR",[31,37],{"name":32,"role":33,"phone":34,"phoneExt":35,"email":36},"Engin Çetin, M.D.","CONTACT","5321206004","90","Doccetin52@gmail.com",{"name":28,"role":33,"phone":34,"phoneExt":35,"email":36},[39],{"facility":40,"status":41,"city":42,"state":43,"zip":44,"country":45,"cosmosGeoPoint":46,"geoPoint":51,"contacts":52},"University of Health Sciences Kocaeli City Hospital","RECRUITING","İzmit","Kocaeli","41200","Turkey (Türkiye)",{"type":47,"coordinates":48},"Point",[49,50],29.92928,40.76499,{"lat":50,"lon":49},[53],{"name":28,"role":33,"phone":54,"phoneExt":35,"email":36},"532 120 60 04",{"type":56,"investigatorFullName":57,"investigatorTitle":58,"investigatorAffiliation":5,"oldNameTitle":59,"oldOrganization":59},"SPONSOR_INVESTIGATOR","Engin Çetin","principal investigator",null,"100634542",false,"NCT07541040","Serratus vs ESP Block for Postoperative Pain in Unilateral Breast Surgery","Comparison of Serratus Posterior Superior Intercostal Plane Block and Erector Spinae Plane Block for Postoperative Analgesia in Unilateral Breast Surgery: A Prospective, Randomized, Assessor-Blinded Trial","Inclusion Criteria:\n\n* Female patients aged 18-65 years\n* ASA physical status I-III\n* Body mass index (BMI) between 18 and 35 kg\u002Fm²\n* Scheduled for elective unilateral breast surgery (mastectomy with or without sentinel lymph node biopsy)\n* Ability to understand and provide written informed consent\n\nExclusion Criteria:\n\n* Infection at the site of block application\n* Known allergy to local anesthetics\n* Coagulopathy or anticoagulant therapy\n* Chronic opioid use\n* Pregnancy\n* Inability to communicate or cooperate\n* Refusal to participate\n* Failed block\n* Requirement of additional intraoperative analgesia outside the study protocol\n* Development of serious intraoperative complications","FEMALE","18 Years","65 Years",{"count":70,"type":71},54,"ESTIMATED","INTERVENTIONAL",[74],"NA","This prospective, randomized, assessor-blinded trial compares serratus posterior superior intercostal plane block (SPSIPB) and erector spinae plane block (ESPB) for postoperative analgesia in unilateral breast surgery. 54 patients will be randomized to receive either SPSIPB or ESPB before general anesthesia.\n\nThe primary outcome is postoperative pain scores within the first 24 hours. The secondary outcome is opioid consumption.",[77,78],"Post Operative Pain","Opioid Use",[77,78],"2026-06-22",{"date":82,"type":83},"2026-06-23","ACTUAL",{"date":85,"type":83},"2026-05-01",{"date":87,"type":71},"2026-08-01",{"name":57,"class":6},1]