[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"conditionNormalized\":\"upper-urinary-tract-stones\",\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:upper-urinary-tract-stones":28},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,1,0,[8],{"id":9,"slug":10,"hasResults":11,"nctId":12,"briefTitle":13,"officialTitle":14,"acronym":4,"eligibilityCriteria":15,"healthyVolunteers":11,"sex":16,"minAge":17,"maxAge":4,"enrollmentInfo":18,"targetDuration":4,"studyType":21,"phases":22,"briefSummary":24,"conditions":25,"keywords":4,"overallStatus":29,"whyStopped":4,"lastUpdateSubmitDate":30,"lastUpdatePostDateStruct":31,"startDateStruct":34,"completionDateStruct":36,"leadSponsor":38,"locationsCount":5},"100611979","flexible-vs-semi-rigid-urs-100611979",false,"NCT07247617","Flexible vs Semi-rigid URS","Semi-rigid Ureteroscopy Versus Flexible Ureteroscopy in Upper Third Ureteric Stones Management: a Prospective Randomized Trial","Inclusion Criteria:\n\n* Patients ≥18 years\n* upper ureteric stone\n* ≤20 mm\n\nExclusion Criteria:\n\n* Associated renal stones\n* Any contraindications to Anesthesia","ALL","18 Years",{"count":19,"type":20},100,"ESTIMATED","INTERVENTIONAL",[23],"NA","To compare the efficacy, safety, success rate, operative time, and cost-effectiveness of flexible ureteroscopy versus semirigid ureteroscopy in the management of upper ureteric stones smaller than 2 cm.\n\nThe investigators' main concern in this study is Upper third ureteric stones to determine which cases can be treated with Semi-Rigid Ureteroscopy, and which one needs flexible ureteroscopy. This depends on several factors:\n\n1. Division of the upper third of the ureter\n2. Stone size\n3. Stone impaction\n4. Surgeon experience\n5. Anesthesia\n6. Ureteric dilatation above the stone\n7. Mini endoscopy",[26,27,28],"Ureteric Stone","Flexible Ureteroscopy","Upper Urinary Tract Stones","RECRUITING","2025-11-22",{"date":32,"type":33},"2025-11-25","ACTUAL",{"date":35,"type":33},"2025-10-01",{"date":37,"type":20},"2027-01-01",{"name":39,"class":40},"Assiut University","OTHER"]