Clinical trials: Retrograde Intrarenal Surgery
Stone, Kidney, Ultrasound Therapy; Complications
Accuracy of Ultrasound for Detecting Residual Fragments During RIRS
The purpose of this study is to assess the accuracy of ultrasound and traditional fluoroscopy to find the residual fragments before retrograde intrarenal surgery is complete.
- Trial name
- NCT05535816
- Testing
- Ultrasound
- Where
- United States
- Volunteers
- 47 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
Renal Stone
Retrograde Intrarenal Surgery (RIRS) With Suction
Suction has been initially used in endoscopic stone management for more than 25 years during PCNL, but the emergence of new devices applying suction through patented ureteroscopes, ureteral access sheaths (UAS) and ureteral…
- Trial name
- NCT06786715
- Testing
- Retrograde intrarenal surgery using DISS, Retrograde intrarenal surgery using FANS
- Where
- Egypt
- Volunteers
- 100 people
- Sponsor
- Kafrelsheikh University
Pediatric Renal Stone
Retrograde Intrarenal Surgery Versus Mini Percutaneous Nephrolithotomy
Pediatric nephrolithiasis accounts for approximately 2-3% of all stone disease cases, with recent reports indicating a rising prevalence of up to 10.6%. This increasing incidence poses a growing public health concern.
- Trial name
- NCT07700251
- Testing
- Retrograde Intrarenal Surgery
- Where
- Egypt
- Volunteers
- 60 people
- Sponsor
- South Valley University
Kidney Stone
Outcomes in Lower Pole Kidney Stone Management Using Mini-PCNL Compared With Retrograde Intra Renal Surgery
Due to the anatomic characteristics of the lower calyx, lower pole stones are difficult to be eliminated through the ureter, even if the stones had been fragmented.
- Trial name
- NCT05714423
- Testing
- Mini-PCNL, RIRS
- Where
- Pakistan
- Volunteers
- 150 people
- Sponsor
- Services Hospital, Lahore
Renal Stones, Flexible Ureteroscopy
Criteria for DJ Stent Omission Following Retrograde Intrarenal Surgery Using Flexible and Navigable Suction Sheath: A Prospective Cohort Study
Retrograde intrarenal surgery is widely used for the treatment of upper urinary tract stones. Traditionally, ureteral stents are placed postoperatively to prevent complications such as pain and stone obstruction.
- Trial name
- NCT07826169
- Testing
- flexible ureteroscopy using flexible and navigable suction sheath
- Where
- Egypt
- Volunteers
- 140 people
- Sponsor
- Ain Shams University
Urolithiasis, Kidney Calculi
Human Voice vs AI-Cloned Voice Audio Added to Written Consent Before Ureteroscopy or Retrograde Intrarenal Surgery (AUDIO-CONSENT)
Before kidney stone surgery with a flexible or semirigid ureteroscope, patients must read and sign a written consent form, but many patients find these forms long and hard to understand.
- Conditions
- Urolithiasis, Kidney Calculi, Ureteral Calculi, Informed Consent
- Trial name
- AUDIO-CONSENT (NCT07859436)
- Testing
- Standard written informed consent, Human-voice audio consent recording, AI-cloned-voice audio consent recording
- Where
- 3 sites in Turkey (Türkiye)
- Volunteers
- 240 people
- Sponsor
- Aydin Adnan Menderes University
Urolithiasis
Analysis of the Effectiveness and Safety of RIRS Under Local Anesthesia and Its Influencing Factors
Retrograde intrarenal surgery (RIRS) is a well-established technique and is the first-line treatment option for upper urinary tract stones <2cm.
- Trial name
- NCT06737497
- Testing
- retrograde Intrarenal Surgery ( RIRS ) under local anesthesia
- Where
- China
- Volunteers
- 100 people
- Sponsor
- The First Affiliated Hospital of Guangzhou Medical University
Renal Calculi
Using Retrograde Intrarenal Surgery for Managing Staghorn Renal Stones.
This prospective, randomized study is comparing the safety and efficacy of using two types of ureteral access sheaths in managing staghorn renal stones by retrograde intrarenal surgery.
- Trial name
- NCT07342361
- Testing
- Retrograde intrarenal surgery
- Where
- Egypt
- Volunteers
- 100 people
- Sponsor
- Helwan University
Urolithiasis
Risk Factors for Postoperative Fever and Sepsis Following Retrograde Intrarenal Surgery
This prospective clinical study aims to evaluate preoperative, intraoperative, and postoperative characteristics of patients undergoing retrograde intrarenal surgery (RIRS) for urinary stone disease.
- Trial name
- SARIS (NCT07295925)
- Where
- Turkey (Türkiye)
- Volunteers
- 250 people
- Sponsor
- TC Erciyes University
Renal Calculi
External Physical Vibration Lithecbole(EPVL) Versus Traditional Row of Stone After Retrograde Intrarenal Surgery(RIRS)
The treatment of renal calculus by retrograde intrarenal surgery(RIRS) isn't able to eliminate stone completely, hastening fragments clearance just only rely on traditional expulsive methods such as high fluid intake ,increasing…
- Trial name
- NCT02645708
- Testing
- Retrograde Intrarenal Surgery, EPVL after RIRS
- Where
- China
- Volunteers
- 180 people
- Sponsor
- The First Affiliated Hospital of Guangzhou Medical University
Optic Nerve Cup, Intracranial Pressure Increase
Effect of Lithotomy Position on Optic Nerve Sheath Diameter
In this study, the effect of increased venous return and increased intra-abdominal pressure on intracranial pressure in the lithotomy position was evaluated.
- Trial name
- NCT06464419
- Testing
- ultrasound
- Where
- Turkey (Türkiye)
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- Başakşehir Çam & Sakura City Hospital
Renal Stones
PCNL Versus RIRS for Management of Stones in Solitary Kidney
Few studies compared PCNL and RIRS for stones in solitary kidney. Current guidelines do not provide clear recommendations concerning the management of renal stones in patients with solitary kidney.
- Trial name
- NCT07730892
- Testing
- retrograde intra renal surgery (RIRS), percutaneous nephrolithotomy (PCNL)
- Where
- Egypt
- Volunteers
- 83 people
- Sponsor
- Mansoura University
Stone, Kidney, Stones, Kidney
Impact of Surgical Position on Stone-Free Rates in Retrograde Intrarenal Surgery
The goal of this clinical trial is to determine whether the surgical position during retrograde intrarenal surgery (RIRS) affects stone-free rates in adults with kidney stones.
- Conditions
- Stone, Kidney, Stones, Kidney, Stone;Renal
- Trial name
- POS-RIRS-RCT (NCT06809582)
- Testing
- The T-Tilt position
- Where
- Turkey (Türkiye)
- Volunteers
- 128 people
- Sponsor
- Ondokuz Mayıs University
Kidney Stone, Retrograde Intrarenal Surgery
Ureteral Stenting After Retrograde Intrarenal Surgery for Renal Stones
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.
- Conditions
- Kidney Stone, Retrograde Intrarenal Surgery, Ureteral Stent
- Trial name
- NCT05738304
- Testing
- Retrograde intrarenal surgery with external ureteral catheter, Retrograde intrarenal surgery with double J internal ureteral stent
- Where
- Egypt
- Volunteers
- 250 people
- Sponsor
- Al-Azhar University
Renal Stone
Prospective Assessment of Procedure-Related and Patient-Reported Outcomes After Retrograde Intrarenal Surgery (RIRS) for Renal Calculi Less Than 20 mm
The investigators aim at this study to prospectively assess procedure-related outcomes after RIRS for renal calculi less than 20 mm, including stone free rate (SFR), predictors of successful outcome, complications types/rate…
- Trial name
- NCT03719456
- Testing
- Retrograde Intrarenal Surgery
- Where
- 2 sites in Egypt
- Volunteers
- 340 people, healthy volunteers welcome
- Sponsor
- Mansoura University
Surgery--Complications, Renal Calculus
Evaluation of Two Different Treatments for Lower Pore Renal Stone: Microperc Vs FURS
This is a prospect, randomized control trial to evaluate merits between microperc and FURS for lower pole renal stone
- Conditions
- Surgery--Complications, Renal Calculus, Nephrolithiasis, Urolithiasis
- Trial name
- NCT03307096
- Testing
- Microperc surgery, FURS
- Where
- China
- Sponsor
- Ningbo No. 1 Hospital
Calculous Anuria, Upper Ureteral Stone
Initial Drainage Method and Flexible Ureteroscopy Outcomes in Calculous Anuria
Calculous anuria caused by obstructing upper ureteral stones in a solitary functioning kidney is a urological emergency requiring urgent decompression.
- Conditions
- Calculous Anuria, Upper Ureteral Stone, Obstructive Uropathy, Acute Kidney Injury
- Trial name
- NCT07627880
- Testing
- Initial JJ Ureteral Stent Drainage, Initial Percutaneous Nephrostomy Drainage
- Where
- 3 sites in Egypt
- Volunteers
- 90 people
- Sponsor
- Beni-Suef University
Renal Stone Disease, Ureteral Stricture
Long-term Safety of UAS-assisted vs Sheathless RIRS in Non-prestented Patients
This retrospective comparative cohort study will include adult patients who underwent primary RIRS for renal stones ≤20 mm at Al-Azhar University Hospitals between January 2020 and December 2025.
- Conditions
- Renal Stone Disease, Ureteral Stricture, Hydronephrosis, Urolithiasis
- Trial name
- NCT07767773
- Testing
- Ureteral access sheath-assisted RIRS, Sheathless RIRS
- Where
- Egypt
- Volunteers
- 1,200 people
- Sponsor
- Al-Azhar University
Urolithiasis, Ureteral Injury
Effect of Preoperative Alpha-blockers on Successful Insertion Ureteral Access Sheath and Reduce Ureteral Injury in Non-prestented Patients During RIRS. Assessment of Factors for Successful Ureteral Access Sheath Insertion.
The aim of the study is to evaluate the effect of preoperative taking alpha-blockers (tamsulosin or silodosin) on the success rate of ureteral access sheath (UAS) insertion and the degree of ureteral injury during RIRS in…
- Conditions
- Urolithiasis, Ureteral Injury, Ureteral Access Sheath, Retrograde Intrarenal Surgery
- Trial name
- NCT07202923
- Where
- Russia
- Volunteers
- 140 people
- Sponsor
- St. Luke's Clinical Hospital, Russia
Kidney Calculi, Kidney Stones
Comparison of Vacuum-Assisted and Conventional Ureteral Access Sheath in Retrograde Intrarenal Surgery
This study aims to compare the efficacy and safety, the ratio of stone-free rates, and complications of two types of access sheaths used in retrograde intrarenal surgery to treat upper urothelial stones.
- Trial name
- NCT06684756
- Testing
- Retrograde intrarenal surgery
- Where
- Turkey (Türkiye)
- Volunteers
- 150 people
- Sponsor
- Namik Kemal University