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Clinical Trial Summary

Several studies evaluated the benefit of a short-term external ureteral catheter (UC) compared to double-J (DJ) ureteral stent after flexible ureteroscopy (URS); the results were controversial. These studies had combined analyses of ureteral and renal stones with a high risk of selection bias. Studies comparing external UC and DJ stent after flexible URS for isolated renal stones are lacking. In the present study, the investigators will compare the outcomes of using a one-day external UC versus a DJ internal ureteral stent for ureteral drainage after retrograde flexible URS (retrograde intrarenal surgery "RIRS") for renal stones. The investigators aim to identify the best ureteral drainage method after RIRS regarding stone clearance, complications, and stent-related symptoms.


Clinical Trial Description

n/a


Study Design


Related Conditions & MeSH terms


NCT number NCT05738304
Study type Interventional
Source Al-Azhar University
Contact Abul-fotouh Ahmed, MD
Phone 00201001066756
Email abulfotouhahmed@yahoo.com
Status Recruiting
Phase N/A
Start date January 12, 2021
Completion date December 1, 2023

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