[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100644065":3},{"organization":4,"armGroups":7,"interventions":10,"overallOfficials":10,"centralContacts":15,"locations":22,"responsibleParty":38,"collaborators":10,"id":42,"slug":10,"hasResults":43,"nctId":44,"briefTitle":45,"officialTitle":46,"acronym":10,"eligibilityCriteria":47,"healthyVolunteers":43,"sex":48,"minAge":49,"maxAge":10,"enrollmentInfo":50,"targetDuration":10,"studyType":53,"phases":10,"briefSummary":54,"conditions":55,"keywords":57,"overallStatus":60,"whyStopped":10,"lastUpdateSubmitDate":61,"lastUpdatePostDateStruct":62,"startDateStruct":65,"completionDateStruct":67,"leadSponsor":69,"locationsCount":70},{"fullName":5,"class":6},"South Valley University","OTHER",[8,12],{"label":9,"type":10,"description":11,"interventionNames":10},"General Anesthesia",null,"patients in this group receive general anesthesia for RIRS: Intravenous anesthetic induction, Endotracheal intubation, controlled ventilation, muscle relaxation and inhalational anesthetic maintenance.",{"label":13,"type":10,"description":14,"interventionNames":10},"Spinal Anesthesia","patients in this group receive spinal anesthesia for RIRS: Standard spinal block using bupivacaine without sedation.",[16],{"name":17,"role":18,"phone":19,"phoneExt":20,"email":21},"Zeinab Mustafa Sayed, MD","CONTACT","01009071365","+02","zeinab5aton@gmail.com",[23],{"facility":24,"status":10,"city":25,"state":26,"zip":27,"country":28,"cosmosGeoPoint":29,"geoPoint":34,"contacts":35},"Qena University","Qina","Qena Governorate","83511","Egypt",{"type":30,"coordinates":31},"Point",[32,33],32.72671,26.16418,{"lat":33,"lon":32},[36],{"name":37,"role":18,"phone":19,"phoneExt":20,"email":21},"Zeinab Mustafa, MD",{"type":39,"investigatorFullName":40,"investigatorTitle":41,"investigatorAffiliation":5,"oldNameTitle":10,"oldOrganization":10},"PRINCIPAL_INVESTIGATOR","Zeinab Mustafa Sayed","Clinical professor in Anesthesia, Intensive Care and Pain Management","100644065",false,"NCT07664384","General Versus Spinal Anesthesia in RIRS","Comparative Study of General Versus Spinal Anesthesia in Retrograde Intrarenal Surgery: Impact of Stone Size on Perioperative Outcomes","Inclusion Criteria:\n\n* Adult patients (≥18 years) scheduled for elective RIRS for renal stones \\\u003C2 cm.\n* Written informed consent obtained.\n\nExclusion Criteria:\n\n* History of previous ureteral surgery or known ureteral stricture.\n* Multiple or bilateral renal stones requiring staged procedures.","ALL","18 Years",{"count":51,"type":52},80,"ESTIMATED","OBSERVATIONAL","The impact of anesthesia type on Retrograde Intrarenal Surgery (RIRS) outcomes remains a subject of ongoing debate. Several studies have compared general anesthesia (GA) and spinal anesthesia (SA) in endourological procedures, with conflicting results regarding operative time, complication rates, and stone-free outcomes. Importantly, the interaction between anesthesia type and stone characteristics-particularly stone size-has not been fully elucidated. Therefore, this study aims to conduct a retrospective comparative analysis of general versus spinal anesthesia in patients undergoing RIRS at Qena University Hospital, with particular emphasis on the effect of stone size stratification on perioperative outcomes.",[56],"Retrograde Intrarenal Surgery",[58,13,9,59],"RIRS","Perioperative Outcomes","NOT_YET_RECRUITING","2026-06-22",{"date":63,"type":64},"2026-06-25","ACTUAL",{"date":66,"type":52},"2026-07",{"date":68,"type":52},"2026-09",{"name":5,"class":6},1]