[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100642239":3},{"organization":4,"armGroups":7,"interventions":19,"overallOfficials":30,"centralContacts":38,"locations":43,"responsibleParty":59,"collaborators":63,"id":65,"slug":66,"hasResults":67,"nctId":68,"briefTitle":69,"officialTitle":70,"acronym":71,"eligibilityCriteria":72,"healthyVolunteers":67,"sex":73,"minAge":74,"maxAge":75,"enrollmentInfo":76,"targetDuration":25,"studyType":79,"phases":80,"briefSummary":82,"conditions":83,"keywords":86,"overallStatus":45,"whyStopped":25,"lastUpdateSubmitDate":89,"lastUpdatePostDateStruct":90,"startDateStruct":93,"completionDateStruct":94,"leadSponsor":96,"locationsCount":97},{"fullName":5,"class":6},"Bursa Yuksek Ihtisas Training and Research Hospital","OTHER_GOV",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"RISS Block","EXPERIMENTAL","Patients will receive an ultrasound-guided rhomboid intercostal-subserratus plane (RISS) block before modified radical mastectomy for postoperative analgesia.",[13],"Procedure: Rhomboid Intercostal-Subserratus Plane Block",{"label":15,"type":10,"description":16,"interventionNames":17},"SPSIP Block","Patients will receive an ultrasound-guided serratus posterior superior intercostal plane (SPSIP) block before modified radical mastectomy for postoperative analgesia.",[18],"Procedure: Serratus Posterior Superior Intercostal Plane Block",[20,26],{"type":21,"name":22,"description":23,"armGroupLabels":24,"otherNames":25},"PROCEDURE","Rhomboid Intercostal-Subserratus Plane Block","Ultrasound-guided rhomboid intercostal-subserratus plane block performed before modified radical mastectomy for postoperative analgesia.",[9],null,{"type":21,"name":27,"description":28,"armGroupLabels":29,"otherNames":25},"Serratus Posterior Superior Intercostal Plane Block","Ultrasound-guided serratus posterior superior intercostal plane block performed before modified radical mastectomy for postoperative analgesia.",[15],[31,35],{"name":32,"affiliation":33,"role":34},"Mürsel Ekinci, MD","Bursa City Hospital","PRINCIPAL_INVESTIGATOR",{"name":36,"affiliation":33,"role":37},"Yusuf Alan, MD","STUDY_CHAIR",[39],{"name":36,"role":40,"phone":41,"phoneExt":25,"email":42},"CONTACT","+905396210977","dryusufalan@gmail.com",[44],{"facility":33,"status":45,"city":46,"state":47,"zip":48,"country":49,"countryCode":25,"cosmosGeoPoint":50,"geoPoint":55,"contacts":56},"RECRUITING","Bursa","Nilüfer","16100","Turkey (Türkiye)",{"type":51,"coordinates":52},"Point",[53,54],29.06013,40.19559,{"lat":54,"lon":53},[57],{"name":36,"role":40,"phone":58,"phoneExt":25,"email":42},"05396210977",{"type":60,"investigatorFullName":61,"investigatorTitle":62,"investigatorAffiliation":5,"oldNameTitle":25,"oldOrganization":25},"SPONSOR_INVESTIGATOR","Ferit Yetik","MD",[64],{"name":33,"class":6},"100642239","riss-versus-spsip-block-in-modified-radical-mastectomy-100642239",false,"NCT07659990","RISS Versus SPSIP Block in Modified Radical Mastectomy","Comparison of Rhomboid Intercostal-Subserratus Plane Block and Serratus Posterior Superior Intercostal Plane Block for Postoperative Analgesia and Dermatomal Spread After Modified Radical Mastectomy: A Randomized Double-Blind Trial","RSMRM","Inclusion Criteria:\n\n* Female patients aged 18-75 years\n* ASA physical status I-III\n* Scheduled for elective unilateral modified radical mastectomy with axillary dissection under general anesthesia\n* Provision of written informed consent\n\nExclusion Criteria:\n\n* Anticoagulant therapy\n* Bleeding diathesis\n* Known allergy to local anesthetics or opioids\n* Infection at the block application site or previous surgery in the block area\n* Cognitive impairment preventing NRS assessment\n* Pregnancy or lactation\n* Chronic opioid use\n* Severe hepatic or renal failure\n* Refusal to participate in the study\n* Technical inability to perform the block or failed block","FEMALE","18 Years","75 Years",{"count":77,"type":78},80,"ESTIMATED","INTERVENTIONAL",[81],"NA","This prospective randomized double-blind controlled trial aims to compare the postoperative analgesic efficacy and dermatomal spread of rhomboid intercostal-subserratus plane (RISS) block and serratus posterior superior intercostal plane (SPSIP) block in patients undergoing modified radical mastectomy. Postoperative pain scores, opioid consumption, rescue analgesic requirements, block-related complications, and quality of recovery outcomes will be evaluated.",[84,85],"Postoperative Pain","Breast Cancer",[87,84,88],"Breast Neoplasms","Anesthesia, Conduction","2026-06-19",{"date":91,"type":92},"2026-06-24","ACTUAL",{"date":89,"type":92},{"date":95,"type":78},"2026-11",{"name":61,"class":6},1]