Ureteral Drainage After Flexible URS for Kidney Stones: External Catheter vs Internal Stent

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Researchers will compare two ureteral drainage methods after retrograde flexible intrarenal surgery for renal stones: a short external ureteral catheter placed temporarily versus a double-J internal ureteral stent. The goal is to see which method provides similar stone clearance but with fewer stent-related symptoms and complications. The trial will look at outcomes such as stone-free rate, postoperative complications, and patient experience related to stent symptoms. Eligible participants are adults undergoing RIRS for renal stones, with certain exclusions such as pregnancy or active infection. The study is sponsored by Al-Azhar University and conducted at its Cairo hospital.

Why it matters

Who can join: the full rules

Inclusion Criteria:

• Adult patients of either gender in whom RIRS was the primary modality.

Exclusion Criteria:

* Pregnant women
* Active urinary tract infection
* solitary kidney
* Concomitant pathology that need intervention in the same setting
* Patients with surgical incidents that indicate double-J stenting (Residual sizable fragments, ureteral false passage, ureteral mucosal laceration, ureteral perforation, and calyceal rupture).

Where it's running

• Urology Department, Al-Azhar University Hospital
  Cairo, Egypt Recruiting

Study contacts

• Principal investigator: Abul-fotouh Ahmed — Department of Urology, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
• Study coordinator: Abul-fotouh Ahmed, MD
• Email: abulfotouhahmed@yahoo.com
• Phone: 00201001066756

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

• Emergency urinary drainage followed by PCNL in obstructive urosepsis

  Doctors test whether the method of emergency drainage (retrograde ureteral stent or percutaneous nephrostomy) affects how well patients do after undergoing definitive PCNL.

  Recruiting Beni-Suef University · Banī Suwayf, Beni Suweif Governorate · NCT07826325

• Long-term safety of UAS-assisted vs sheathless RIRS in adults with kidney stones

  This study tests whether using a ureteral access sheath during the initial RIRS affects long-term safety and outcomes in adults with kidney stones ≤20 mm.

  Recruiting Al-Azhar University · Cairo · NCT07767773

• Observation vs Upfront Surgery for Asymptomatic Kidney Stones in Children and Adults

  This trial tests whether watching asymptomatic kidney stones or performing upfront surgery is better for reducing life disruption in patients aged 6 and older.

  Recruiting at 2 sites Children's Hospital of Philadelphia · Irvine, California and 3 other locations · NCT07718802

• Tamsulosin and intraureteral aminophylline to improve ureteral access during primary retrograde intrarenal surgery

  This trial tests whether taking tamsulosin before surgery, using aminophylline inside the ureter during the operation, or both, helps place the ureteral access sheath on the first try for adults with small unilateral kidney stones undergoing RIRS.

  Recruiting at 3 sites Phase 2 Beni-Suef University · Aswān, Aswan Governorate and 2 other locations · NCT07623876

• Two-Tier Virtual Reality Education to Reduce Anxiety Before Kidney Stone Surgery

  This study tests whether a two-tier VR preoperative education approach can lower anxiety and improve knowledge and self-care in adults undergoing urolithiasis surgery.

  Recruiting Chang Gung Memorial Hospital · Keelung · NCT07620873

• Tamsulosin 0.4 mg with Tadalafil 5 mg versus 2.5 mg to reduce symptoms from ureteral stents

  This will test whether adding Tadalafil at 5 mg or 2.5 mg to Tamsulosin 0.4 mg better reduces stent-related symptoms for adults with a double-J ureteral stent after stone removal.

  Recruiting Ain Shams University · Cairo, Abbasia · NCT07562282

How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.