Clinical trial Recruiting at 1 site Interventional Ages 16 and up

Evaluating a new patient position for kidney stone surgery

Official title: Evaluation of the T-tilted Position in Retrograde Intrarenal Surgery Using Flexible and Navigable Suction Access Sheath.

Run by Ain Shams University · NCT06860113 · Data updated 2026-11-12

This study is testing if a new way of positioning patients during kidney stone surgery can help them get rid of stones more effectively than the usual position.

Quick facts

Study typeInterventional
Ages16 Years and up
SexAll
Enrollment160 (estimated)
SponsorAin Shams University
Academic / other
Locations1 site (Cairo, Abbassia, Cairo)
StatusRecruiting
StartedMarch 1, 2025
Main results expectedOctober 30, 2025
Study endsDecember 31, 2025
Registry record updatedJuly 17, 2025
Trial IDNCT06860113 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are patients over 16 years old with kidney stones up to 2.5 cm who do not have a pre-existing ureteral stent.

Probably not a fit

Patients with previous renal surgery, renal anomalies, active urinary tract infections, or medical conditions preventing the Trendelenburg position may not benefit from this study.

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

What this trial studies

This study evaluates the effectiveness of the T-tilted position during retrograde intrarenal surgery compared to the standard lithotomy position. The aim is to determine if this new positioning can improve the stone-free rate for patients undergoing surgery for kidney stones up to 2.5 cm in size. The research will involve patients aged 16 and older who meet specific eligibility criteria, and it will assess outcomes related to stone removal efficiency. The study is conducted at Ain Shams University hospitals in Cairo.

Why it matters

Potential benefit: If successful, this approach could lead to higher stone-free rates and improved surgical outcomes for patients with kidney stones.

How similar studies have gone: While variations in surgical positioning have been explored, the specific T-tilted approach is relatively novel and has not been extensively tested in prior studies.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* All patients above the age of 16 years of either sex who did not have a pre-existing ureteral stent presented to the Urology clinic in our university hospitals with kidney stones with size up to 2.5cm (estimated by CTUT as the greatest dimension or the summation of the greatest dimensions).

Exclusion Criteria:

* Previous open renal surgery or renal trauma.
* Patients with renal anomalies.
* Patients with untreated or active UTI.
* Patients who suffer from medical conditions that preclude the application of Trendelenburg position (lung disease, congestive heart failure).

Where it's running

  • AinShams university hospitals
    Cairo, Abbassia, Cairo, Egypt
    Recruiting

Study contacts

Similar studies

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

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.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.