Clinical trials: Ureteral Access Sheath Placement
Urolithiasis, Tamsulosin
Medication Facilitated Ureteral Access Sheath Deployment During Ureteroscopy: The Impact of One Week of Preoperative Tamsulosin
The goal of this clinical trial is to assess whether tamsulosin given one week prior to renal or ureteric stone surgery would improve the success rate of ureteral access sheath deployment and decrease ureteral injury
- Conditions
- Urolithiasis, Tamsulosin, Pre-operative, Ureteral Access Sheath Placement
- Trial name
- NCT07847866
- Testing
- Tamsulosin 0.4 MG, Control
- Where
- 2 sites in Singapore
- Volunteers
- 111 people
- Sponsor
- Singapore General Hospital
Kidney Calculi
Failed Insertion of Ureteral Access Sheath During Flexible Ureterorenoscopy
Percutaneous nephrolithotomy (PNL) is the gold standard recommended treatment technique for kidney stones larger than 20 mm. For kidney stones between 10 - 20 mm, both shock wave lithotripsy (SWL) or flexible ureterorenoscopy…
- Trial name
- NCT05911945
- Testing
- Flexible Ureterorenoscopy, Mini Percutaneous Nephrolithotomy
- Where
- Turkey (Türkiye)
- Volunteers
- 48 people
- Sponsor
- Haseki Training and Research Hospital
Urolithiasis
Measurement of Resistance During UAS Insertion Procedure in RIRS
Retrograde intrarenal surgery (RIRS) has been considered as the first-line choice for the management of <20mm kidney stones. Insertion of a ureteral access sheath (UAS) before RIRS surgery is currently accepted as an effective…
- Trial name
- NCT03919227
- Testing
- empty bladder before inserting UAS, do not interfere with the filling degree of bladder
- Where
- China
- Volunteers
- 120 people
- Sponsor
- Guohua Zeng
Kidney Stone, Retrograde Intrarenal Surgery (RIRS)
MIRABEGRON AND UAS OUTCOMES DURING RIRS
The aim of this study is to evaluate whether there is a difference in the passage rate of the ureteral access sheath between patients who used mirabegron (a beta-3 receptor agonist) for overactive bladder and those who underwent…
- Conditions
- Kidney Stone, Retrograde Intrarenal Surgery (RIRS), Ureteral Access Sheath
- Trial name
- NCT07566416
- Testing
- Retrograde intrarenal surgery
- Where
- Turkey (Türkiye)
- Volunteers
- 131 people
- Sponsor
- Ankara Training and Research Hospital
Urolithiasis
Under Direct Vision vs Under Non Direct Vision of Insertion of UAS in RIRS
Retrograde intrarenal surgery (RIRS) has been considered as the first-line choice for the management of <20mm kidney stones. Insertion of a ureteral access sheath (UAS) before RIRS surgery is currently accepted as an effective…
- Trial name
- NCT03717285
- Testing
- Insert the UAS under direct vision, Insert the UAS under non direct vision
- Where
- China
- Volunteers
- 129 people
- Sponsor
- Guohua Zeng
Renal Stone, Retrograde Intrarenal Surgery
Tamsulosin Assisted Ureteral Access Sheath Insertion
Aim is to study if 1 week of pre operative tamsulosin would enable easier insertion of ureteral access sheath in primary retrograde intrarenal surgery for renal stone disease
- Conditions
- Renal Stone, Retrograde Intrarenal Surgery, Urolithiasis
- Trial name
- NCT05197088
- Testing
- Tamsulosin
- Where
- Singapore
- Volunteers
- 110 people
- Sponsor
- Sengkang General Hospital
Renal Stone, Nephrolithiasis
Impact Ureteral Sheath Design During Ureteroscopy
The purpose of this study is to assess whether one of two ureteral access sheaths is safer for patients undergoing ureteroscopy. Both sheaths are FDA approved devices and commercially available.
- Conditions
- Renal Stone, Nephrolithiasis, Urolithiasis
- Trial name
- NCT03349099
- Testing
- Cook Flexor, Boston Scientific Navigator
- Volunteers
- 95 people
- Sponsor
- The Cleveland Clinic
Nephrolithiasis, Alpha Blocker
Alpha-Blockers Prior to Ureteral Access Sheath Placement in Flexible Ureteroscopy: A Randomized Prospective Study
This study aims to evaluate whether the use of alpha-blockers before flexible ureterorenolithotripsy facilitates the passage of the ureteral access sheath.
- Conditions
- Nephrolithiasis, Alpha Blocker, Ureteral Access Sheath
- Trial name
- ALFA-URS (NCT07124299)
- Testing
- Experimental: Alpha-blocker group, No intervention (observational study)
- Where
- Brazil
- Volunteers
- 140 people
- Sponsor
- Pedro de Figueiredo Buchalla
Renal Stone
Effect of Preoperative Silodosin on Feasibility of Ureteral Access Sheath Insertion
The ureteral access sheath (UAS) is an ancillary device widely used by urologists to facilitate fast, repeatable, and safe access to ureters and collecting systems; improve visibility; reduce the risk of infection by reducing…
- Trial name
- NCT05833386
- Testing
- Ureteral access sheath placement during flexible ureteroscope for renal stones
- Where
- Egypt
- Volunteers
- 2,000 people
- Sponsor
- Al-Azhar University
Renal Stones, Retrograde Intrarenal Surgery
Tamsulosin and Intraureteral Aminophylline for Ureteral Access During RIRS
This multicenter randomized controlled trial will evaluate whether preoperative tamsulosin, intraureteral aminophylline, or their combination can improve ureteral access during primary retrograde intrarenal surgery for renal…
- Conditions
- Renal Stones, Retrograde Intrarenal Surgery, Ureteral Access Sheath Placement
- Trial name
- TAM-AMIN-UAS (NCT07623876)
- Testing
- Tamsulosin, Intraureteral Aminophylline
- Where
- 3 sites in Egypt
- Volunteers
- 322 people
- Sponsor
- Beni-Suef 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