[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100578306":3},{"organization":4,"armGroups":7,"interventions":18,"overallOfficials":24,"centralContacts":28,"locations":33,"responsibleParty":46,"collaborators":12,"id":48,"slug":49,"hasResults":50,"nctId":51,"briefTitle":52,"officialTitle":53,"acronym":54,"eligibilityCriteria":55,"healthyVolunteers":50,"sex":56,"minAge":57,"maxAge":12,"enrollmentInfo":58,"targetDuration":12,"studyType":61,"phases":62,"briefSummary":64,"conditions":65,"keywords":12,"overallStatus":35,"whyStopped":12,"lastUpdateSubmitDate":69,"lastUpdatePostDateStruct":70,"startDateStruct":73,"completionDateStruct":75,"leadSponsor":77,"locationsCount":78},{"fullName":5,"class":6},"Ondokuz Mayıs University","OTHER",[8,13],{"label":9,"type":10,"description":11,"interventionNames":12},"Standard lithotomy position","NO_INTERVENTION","In this arm we will use standard lithotomy position as control group.",null,{"label":14,"type":15,"description":12,"interventionNames":16},"T-Tilt Lithotomy Position","ACTIVE_COMPARATOR",[17],"Procedure: The T-Tilt position",[19],{"type":20,"name":21,"description":22,"armGroupLabels":23,"otherNames":12},"PROCEDURE","The T-Tilt position","The T-Tilt position is a modified lithotomy position used during retrograde intrarenal surgery (RIRS). In this position:\n\nThe patient is placed in a 30-degree Trendelenburg position, meaning the head is slightly lower than the feet.\n\nThe surgical side is elevated at a 30-degree angle to improve access to the kidney.\n\nThis modified positioning is designed to enhance stone clearance, particularly by facilitating the movement of stone fragments away from the lower kidney calyces, where residual stones often remain. Researchers will compare this position to the standard lithotomy position to determine its impact on stone-free rates and surgical outcomes.",[14],[25],{"name":26,"affiliation":5,"role":27},"Murat Gulsen","PRINCIPAL_INVESTIGATOR",[29],{"name":26,"role":30,"phone":31,"phoneExt":12,"email":32},"CONTACT","+905062357421","mglotr@gmail.com",[34],{"facility":5,"status":35,"city":36,"state":12,"zip":12,"country":37,"countryCode":12,"cosmosGeoPoint":38,"geoPoint":43,"contacts":44},"RECRUITING","Samsun","Turkey (Türkiye)",{"type":39,"coordinates":40},"Point",[41,42],36.3361,41.27976,{"lat":42,"lon":41},[45],{"name":26,"role":30,"phone":31,"phoneExt":12,"email":32},{"type":27,"investigatorFullName":26,"investigatorTitle":47,"investigatorAffiliation":5,"oldNameTitle":12,"oldOrganization":12},"Assistant professor","100578306","impact-of-surgical-position-on-stone-free-rates-in-retrograde-intrarenal-surgery-100578306",false,"NCT06809582","Impact of Surgical Position on Stone-Free Rates in Retrograde Intrarenal Surgery","Does the Positioning in Retrograde Intrarenal Surgery Affect Stone-Free Rates? A Prospective Randomized Controlled Trial","POS-RIRS-RCT","Inclusion Criteria:\n\n* Presence of single or multiple kidney stones, with the largest stone ≤2 cm\n* Age ≥18 years\n* Provided written informed consent to participate in the study\n* Indicated for retrograde intrarenal surgery (RIRS) as a treatment approach\n\nExclusion Criteria:\n\n* Severe cardiovascular disease (e.g., heart failure)\n* Congenital kidney anomalies (e.g., horseshoe kidney, ectopic kidney)\n* Concurrent ureteral stones\n* Pregnancy or planning pregnancy\n* History of previous kidney surgery on the same side\n* Active urinary tract infection (UTI)\n* Coagulopathy or use of anticoagulant therapy that cannot be stopped before surgery","ALL","18 Years",{"count":59,"type":60},128,"ESTIMATED","INTERVENTIONAL",[63],"NA","The goal of this clinical trial is to determine whether the surgical position during retrograde intrarenal surgery (RIRS) affects stone-free rates in adults with kidney stones. The main questions it aims to answer are:\n\n* Does the modified lithotomy position result in a higher stone-free rate compared to the standard lithotomy position?\n* Are there differences in complication rates between the two surgical positions?\n\nResearchers will compare patients undergoing RIRS in the standard lithotomy position to those in the modified lithotomy position (30-degree Trendelenburg with elevated surgical side) to assess its impact on stone clearance and surgical outcomes.\n\nParticipants will:\n\n* Be randomly assigned to one of two surgical positions\n* Undergo RIRS with standard surgical procedures\n* Have follow-up imaging to assess stone clearance after surgery\n\nThis study aims to improve surgical techniques and patient outcomes in kidney stone treatment.",[66,67,68],"Stone, Kidney","Stones, Kidney","Stone;Renal","2025-08-14",{"date":71,"type":72},"2025-08-15","ACTUAL",{"date":74,"type":72},"2025-01-01",{"date":76,"type":60},"2026-06-01",{"name":5,"class":6},1]