An interventional study of without any preoperative stenting and (DJ) stent placed with sedation and undergo RIRS within 2-4 weeks in Stone, Urinary and Stone, Kidney, sponsored by Bedreddin Kalyenci. Completed at 1 site in Turkey (Türkiye). Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-05-13.
Sponsored by Bedreddin Kalyenci · Not applicable, Interventional, and Treatment
This study aims to evaluate how placing a stent before surgery (preoperative stenting or passive dilation) affects the success rate of retrograde intrarenal surgery (RIRS), which is performed for kidney stones. Specifically, we will examine whether stenting improves the chance of becoming stone-free after surgery and reduces the need for a second surgical procedure.
509 studies on the registry are indexed under Kidney Calculi; 146 are open to participants now.
This study's enrollment of 210 is above the median of 86 across 391 interventional studies indexed under Kidney Calculi.
Browse Kidney Calculi studies →This is the only study on the registry with Bedreddin Kalyenci as lead sponsor.
Compared within Kidney Calculi, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Urinary Calculi. The counts are of registry records indexed under each term, refreshed daily. How we classify →
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Procedure: without any preoperative stenting
Procedure: (DJ) stent placed with sedation and undergo RIRS within 2-4 weeks
Procedure: Patients will have a DJ stent placed with sedation and undergo RIRS within 4-6 weeks.
Patients will have RIRS without any preoperative stenting.
Patients will have a double-J (DJ) stent placed with sedation and undergo RIRS within 2-4 weeks.
Patients will have a DJ stent placed with sedation and undergo RIRS within 4-6 weeks
Number of Participants with stone-free
Time frame: in the first month after surgery
Number of Participants with additional surgery was needed
Time frame: in the first month after surgery
Number of Participants with postoperative complications
Time frame: within 1 month after surgery
Plan to share: Yes
Supporting information: Study protocol, Statistical analysis plan, Informed consent form, Clinical study report
Time frame: One year after the completion of the study
No publications or documents are linked to this record.
This study is completed, as verified in May 2026. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.