[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100640169":3},{"organization":4,"armGroups":7,"interventions":19,"overallOfficials":30,"centralContacts":35,"locations":40,"responsibleParty":87,"collaborators":25,"id":90,"slug":91,"hasResults":92,"nctId":93,"briefTitle":94,"officialTitle":95,"acronym":25,"eligibilityCriteria":96,"healthyVolunteers":92,"sex":97,"minAge":98,"maxAge":25,"enrollmentInfo":99,"targetDuration":25,"studyType":102,"phases":103,"briefSummary":105,"conditions":106,"keywords":111,"overallStatus":43,"whyStopped":25,"lastUpdateSubmitDate":115,"lastUpdatePostDateStruct":116,"startDateStruct":119,"completionDateStruct":121,"leadSponsor":123,"locationsCount":124},{"fullName":5,"class":6},"Beni-Suef University","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"JJ Ureteral Stent Drainage Group","ACTIVE_COMPARATOR","Participants randomized to this arm will undergo emergency retrograde placement of a 6 Fr double-J ureteral stent under cystoscopic guidance for decompression of calculous anuria caused by a single upper ureteral stone in a solitary functioning kidney. After renal functional improvement, clinical stabilization, and appropriate urine culture management, definitive flexible ureteroscopy\u002Fretrograde intrarenal surgery will be performed according to the standardized study protocol.",[13],"Procedure: Initial JJ Ureteral Stent Drainage",{"label":15,"type":10,"description":16,"interventionNames":17},"Percutaneous Nephrostomy Drainage Group","Participants randomized to this arm will undergo emergency ultrasound-guided placement of an 8 Fr percutaneous nephrostomy tube for decompression of calculous anuria caused by a single upper ureteral stone in a solitary functioning kidney. After renal functional improvement, clinical stabilization, and appropriate urine culture management, definitive flexible ureteroscopy\u002Fretrograde intrarenal surgery will be performed according to the standardized study protocol.",[18],"Procedure: Initial Percutaneous Nephrostomy Drainage",[20,26],{"type":21,"name":22,"description":23,"armGroupLabels":24,"otherNames":25},"PROCEDURE","Initial JJ Ureteral Stent Drainage","Retrograde cystoscopic placement of a 6 Fr JJ ureteral stent for initial upper urinary tract decompression in patients presenting with calculous anuria due to a single upper ureteral stone in a solitary functioning kidney. After renal functional improvement, clinical stabilization, and appropriate urine culture management, participants will undergo standardized definitive flexible ureteroscopy\u002Fretrograde intrarenal surgery.",[9],null,{"type":21,"name":27,"description":28,"armGroupLabels":29,"otherNames":25},"Initial Percutaneous Nephrostomy Drainage","Ultrasound-guided placement of an 8 Fr percutaneous nephrostomy tube for initial upper urinary tract decompression in patients presenting with calculous anuria due to a single upper ureteral stone in a solitary functioning kidney. After renal functional improvement, clinical stabilization, and appropriate urine culture management, participants will undergo standardized definitive flexible ureteroscopy\u002Fretrograde intrarenal surgery.",[15],[31],{"name":32,"affiliation":33,"role":34},"Hany F Badawy, MD","Faculty of medicine BeniSuef University","PRINCIPAL_INVESTIGATOR",[36],{"name":32,"role":37,"phone":38,"phoneExt":25,"email":39},"CONTACT","+201149525028","HANYFATHY86@GMAIL.COM",[41,58,72],{"facility":42,"status":43,"city":44,"state":45,"zip":25,"country":46,"countryCode":47,"cosmosGeoPoint":48,"geoPoint":53,"contacts":54},"Department of Urology- Beni-Suef University Hospitals","RECRUITING","Banī Suwayf","Beni Suweif Governorate","Egypt","EG",{"type":49,"coordinates":50},"Point",[51,52],31.09785,29.07441,{"lat":52,"lon":51},[55,57],{"name":32,"role":37,"phone":38,"phoneExt":25,"email":56},"Hanyfathy86@gmail.com",{"name":32,"role":34,"phone":25,"phoneExt":25,"email":25},{"facility":59,"status":43,"city":60,"state":61,"zip":25,"country":46,"countryCode":47,"cosmosGeoPoint":62,"geoPoint":66,"contacts":67},"Department of Urology- Minia University Hospitals","Minya","Minya Governorate",{"type":49,"coordinates":63},[64,65],30.75813,28.09193,{"lat":65,"lon":64},[68,71],{"name":69,"role":37,"phone":70,"phoneExt":25,"email":25},"M Abdelmalek, MD","+20 11 00464753",{"name":69,"role":34,"phone":25,"phoneExt":25,"email":25},{"facility":73,"status":43,"city":74,"state":25,"zip":25,"country":46,"countryCode":47,"cosmosGeoPoint":75,"geoPoint":79,"contacts":80},"Department of Urology- Tanta University Hospitals","Tanta",{"type":49,"coordinates":76},[77,78],31.00192,30.78847,{"lat":78,"lon":77},[81,85],{"name":82,"role":37,"phone":83,"phoneExt":25,"email":84},"I, MD","+201060245430","MMohamed.elmaadawy@med.tanta.edu.eg",{"name":86,"role":34,"phone":25,"phoneExt":25,"email":25},"I Elmaadawy, MD",{"type":34,"investigatorFullName":88,"investigatorTitle":89,"investigatorAffiliation":5,"oldNameTitle":25,"oldOrganization":25},"Hany Fathy Badawy, MD","Lecturer of Urology, Faculty of Medicine, Beni-Suef University","100640169","initial-drainage-method-and-flexible-ureteroscopy-outcomes-in-calculous-anuria-100640169",false,"NCT07627880","Initial Drainage Method and Flexible Ureteroscopy Outcomes in Calculous Anuria","Impact of Initial Drainage Method on Flexible Ureteroscopy Outcomes in Patients Presenting With Calculous Anuria: A Multicenter Prospective Randomized Controlled Trial","Inclusion Criteria:\n\n* Adults aged 18 years or older.\n* Calculous anuria secondary to a single upper ureteral stone.\n* Solitary functioning kidney, whether anatomical or functional.\n* Single upper ureteral stone confirmed by non-contrast computed tomography.\n* Stone size from 6 mm to 20 mm in maximum diameter.\n* Patient considered suitable for either initial JJ ureteral stent drainage or percutaneous nephrostomy drainage.\n* Candidate for definitive treatment by flexible ureteroscopy\u002Fretrograde intrarenal surgery.\n* Documented renal functional improvement and clinical stabilization before definitive RIRS.\n* Negative or appropriately treated urine culture before definitive RIRS.\n* Ability and willingness to provide written informed consent.\n\nExclusion Criteria:\n\n* Multiple stones or bilateral stones not fitting the solitary-kidney study design.\n* Renal pelvic, distal ureteral, or multiple ipsilateral stones.\n* Stone burden greater than 20 mm.\n* Septic shock, hemodynamic instability, or need for emergency dialysis at presentation.\n* Pyonephrosis requiring a non-randomized drainage decision.\n* Anatomical abnormalities affecting endoscopic access, such as horseshoe kidney, pelvic kidney, ureterocele, or ureteral stricture.\n* Previous ipsilateral ureteral reconstructive surgery.\n* Uncorrected coagulopathy.\n* Pregnancy.\n* Genitourinary malignancy.\n* Inability to complete follow-up.","ALL","18 Years",{"count":100,"type":101},90,"ESTIMATED","INTERVENTIONAL",[104],"NA","Calculous anuria caused by obstructing upper ureteral stones in a solitary functioning kidney is a urological emergency requiring urgent decompression. Both retrograde JJ ureteral stenting and percutaneous nephrostomy are commonly used emergency drainage methods. However, limited evidence is available regarding whether the initial drainage method affects subsequent definitive flexible ureteroscopy\u002Fretrograde intrarenal surgery outcomes.\n\nThis multicenter prospective randomized controlled trial will compare emergency JJ ureteral stent drainage versus percutaneous nephrostomy drainage in adult patients presenting with calculous anuria due to a single upper ureteral stone in a solitary functioning kidney. After renal functional improvement, clinical stabilization, and appropriate urine culture management, all participants will undergo standardized definitive flexible ureteroscopy\u002Fretrograde intrarenal surgery. The study will assess renal functional recovery, first-session surgical success, stone-free rate, operative parameters, complications, and microbiological outcomes.",[107,108,109,110],"Calculous Anuria","Upper Ureteral Stone","Obstructive Uropathy","Acute Kidney Injury",[112,113,114],"Percutaneous nephrostomy","Double-J ureteral stent","Retrograde intrarenal surgery","2026-05-30",{"date":117,"type":118},"2026-06-04","ACTUAL",{"date":120,"type":118},"2026-05-06",{"date":122,"type":101},"2027-04",{"name":5,"class":6},3]