[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100638175":3},{"organization":4,"armGroups":7,"interventions":20,"overallOfficials":29,"centralContacts":34,"locations":39,"responsibleParty":87,"collaborators":25,"id":90,"slug":91,"hasResults":92,"nctId":93,"briefTitle":94,"officialTitle":95,"acronym":96,"eligibilityCriteria":97,"healthyVolunteers":92,"sex":98,"minAge":99,"maxAge":25,"enrollmentInfo":100,"targetDuration":25,"studyType":103,"phases":104,"briefSummary":106,"conditions":107,"keywords":111,"overallStatus":42,"whyStopped":25,"lastUpdateSubmitDate":116,"lastUpdatePostDateStruct":117,"startDateStruct":120,"completionDateStruct":122,"leadSponsor":124,"locationsCount":125},{"fullName":5,"class":6},"Beni-Suef University","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"ComfiJ Ureteral Stent","EXPERIMENTAL","Patients randomized to this arm will receive a ComfiJ ureteral stent after unilateral ureteroscopy or retrograde intrarenal surgery when short-term postoperative ureteral stenting is clinically indicated. Planned stent removal will be performed on postoperative day 14 whenever clinically feasible.",[13],"Device: ComfiJ Ureteral Stent",{"label":15,"type":16,"description":17,"interventionNames":18},"Conventional Double-J Ureteral Stent","ACTIVE_COMPARATOR","Patients randomized to this arm will receive a conventional double-J ureteral stent after unilateral ureteroscopy or retrograde intrarenal surgery when short-term postoperative ureteral stenting is clinically indicated. Planned stent removal will be performed on postoperative day 14 whenever clinically feasible.",[19],"Device: Conventional Double-J Ureteral Stent",[21,26],{"type":22,"name":9,"description":23,"armGroupLabels":24,"otherNames":25},"DEVICE","Placement of a ComfiJ ureteral stent after unilateral ureteroscopy or retrograde intrarenal surgery for urinary stones when short-term postoperative ureteral stenting is clinically indicated.",[9],null,{"type":22,"name":15,"description":27,"armGroupLabels":28,"otherNames":25},"Placement of a conventional double-J ureteral stent after unilateral ureteroscopy or retrograde intrarenal surgery for urinary stones when short-term postoperative ureteral stenting is clinically indicated.",[15],[30],{"name":31,"affiliation":32,"role":33},"Hany F Badawy, MD","Faculty of medicine Beni-Suef University","PRINCIPAL_INVESTIGATOR",[35],{"name":31,"role":36,"phone":37,"phoneExt":25,"email":38},"CONTACT","+201149525028","HANYFATHY86@GMAIL.COM",[40,57,72],{"facility":41,"status":42,"city":43,"state":44,"zip":45,"country":46,"countryCode":47,"cosmosGeoPoint":48,"geoPoint":53,"contacts":54},"Department of Urology- Beni-Suef University Hospitals","RECRUITING","Banī Suwayf","Beni Suweif Governorate","02456","Egypt","EG",{"type":49,"coordinates":50},"Point",[51,52],31.09785,29.07441,{"lat":52,"lon":51},[55,56],{"name":31,"role":36,"phone":37,"phoneExt":25,"email":38},{"name":31,"role":33,"phone":25,"phoneExt":25,"email":25},{"facility":58,"status":42,"city":59,"state":25,"zip":25,"country":46,"countryCode":47,"cosmosGeoPoint":60,"geoPoint":64,"contacts":65},"Department of Urology- Minia University Hospitals","Minya",{"type":49,"coordinates":61},[62,63],30.75813,28.09193,{"lat":63,"lon":62},[66,70],{"name":67,"role":36,"phone":68,"phoneExt":25,"email":69},"Ahmed M, MD","+20 11 00464753","a.m.abdelmalek@mu.edu.eg",{"name":71,"role":33,"phone":25,"phoneExt":25,"email":25},"M Abdelmalek, MD",{"facility":73,"status":42,"city":74,"state":25,"zip":25,"country":46,"countryCode":47,"cosmosGeoPoint":75,"geoPoint":79,"contacts":80},"Department of Urology- Tanra University Hospitals","Tanta",{"type":49,"coordinates":76},[77,78],31.00192,30.78847,{"lat":78,"lon":77},[81,84,86],{"name":82,"role":36,"phone":83,"phoneExt":25,"email":25},"I Elmaadawy, MD","+201060245430",{"name":25,"role":36,"phone":25,"phoneExt":25,"email":85},"Mohamed.elmaadawy@med.tanta.edu.eg",{"name":82,"role":33,"phone":25,"phoneExt":25,"email":25},{"type":33,"investigatorFullName":88,"investigatorTitle":89,"investigatorAffiliation":5,"oldNameTitle":25,"oldOrganization":25},"Hany Fathy Badawy, MD","Lecturer of Urology, Faculty of Medicine, Beni-Suef University","100638175","comfij-versus-conventional-double-j-stent-for-ureteral-stent-symptoms-100638175",false,"NCT07627828","ComfiJ Versus Conventional Double-J Stent for Ureteral Stent Symptoms","Evaluation of Stent-Related Symptoms After ComfiJ Ureteric Stent Versus Conventional Double-J Ureteric Stent: A Prospective Multicenter Randomized Controlled Trial","COMFIJ-DJS","Inclusion Criteria:\n\n* Age 18 to 80 years.\n* Adult patients undergoing unilateral ureteroscopy or retrograde intrarenal surgery for ureteric or renal stones.\n* Intraoperative confirmation that short-term postoperative ureteric stenting for approximately 2 weeks is clinically indicated.\n* Indications for postoperative stenting may include ureteric edema, minor ureteric mucosal trauma, need for ureteric dilatation, ureteral access sheath use with expected postoperative edema, impacted stone, residual dust or fragments requiring temporary drainage, or prolonged procedure.\n* Ability to understand and complete the Arabic Ureteral Stent Symptom Questionnaire.\n* Ability to provide written informed consent.\n\nExclusion Criteria:\n\n* Cases in which no postoperative ureteric stent is clinically indicated.\n* Cases requiring prolonged urinary drainage or major reconstructive decision-making.\n* Bilateral ureteroscopy or retrograde intrarenal surgery.\n* Solitary kidney.\n* Major ureteric injury or ureteric perforation.\n* Preoperative febrile urinary tract infection or sepsis.\n* Pregnancy or breastfeeding.\n* Neurogenic bladder.\n* Overactive bladder syndrome.\n* Major neurological disease or psychiatric disease affecting symptom reporting.\n* History of major bladder, prostate, or pelvic surgery likely to confound stent-related symptoms.\n* Concomitant use of alpha-blockers, anticholinergics, chronic analgesics, or other medications likely to alter symptom evaluation.\n* Other acute medical conditions that might influence the Ureteral Stent Symptom Questionnaire pain score, including acute pancreatitis, acute gastroenteritis, or musculoskeletal disorders.\n* Known allergy to any study-related medication or device material.\n* Inability to comply with the follow-up schedule.","ALL","18 Years",{"count":101,"type":102},150,"ESTIMATED","INTERVENTIONAL",[105],"NA","This prospective multicenter randomized controlled trial will compare stent-related symptoms after placement of a ComfiJ ureteral stent versus a conventional double-J ureteral stent in adult patients undergoing unilateral ureteroscopy or retrograde intrarenal surgery for urinary stones when short-term postoperative ureteral stenting is clinically indicated. Eligible patients will be randomized intraoperatively after the operating surgeon confirms the need for postoperative stenting. The primary outcome will be the Ureteral Stent Symptom Questionnaire urinary symptoms domain score on postoperative day 14 before planned stent removal.",[108,109,110],"Ureteral Stent-Related Symptoms","Ureteral Calculi","Urolithiasis",[112,113,114,115],"ComfiJ ureteral stent","Conventional double-J ureteral stent","Ureteral Stent Symptom Questionnaire","Ureteroscopy","2026-05-30",{"date":118,"type":119},"2026-06-04","ACTUAL",{"date":121,"type":119},"2026-05-02",{"date":123,"type":102},"2027-05",{"name":5,"class":6},3]