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 type | Interventional |
|---|---|
| Ages | 16 Years and up |
| Sex | All |
| Enrollment | 160 (estimated) |
| Sponsor | Ain Shams University Academic / other |
| Locations | 1 site (Cairo, Abbassia, Cairo) |
| Status | Recruiting |
| Started | March 1, 2025 |
| Main results expected | October 30, 2025 |
| Study ends | December 31, 2025 |
| Registry record updated | July 17, 2025 |
| Trial ID | NCT06860113 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
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AinShams university hospitals
Cairo, Abbassia, Cairo, Egypt Recruiting
Study contacts
- Study coordinator: Emad Tawfeik, MBBCH
- Email: emadmamdouh676@gmail.com
- Phone: +2001210235447
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Mini‑PCNL versus flexible ureteroscopy with a suction sheath for 2–3 cm kidney stones
This tests whether mini‑PCNL or flexible ureteroscopy with a suction sheath better clears 2–3 cm kidney stones and leads to fewer complications in adults.
-
Effect of surgical position on kidney stone removal success
This study tests whether changing the way patients are positioned during kidney stone surgery can help doctors remove stones more successfully and with fewer complications.
-
Using 3D imaging to improve kidney stone surgery training
This study is testing if using 3D imaging can help doctors learn to perform kidney stone surgery better for patients with larger stones.
-
Improving kidney stone clearance after surgery with home exercises
This study tests if doing specific exercises at home can help people pass kidney stones more easily after surgery.
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Self-posturotherapy to clear leftover fragments after lower-pole kidney stone treatment
This trial will test whether a simple home posturotherapy technique helps people treated with extracorporeal lithotripsy or flexible ureteroscopy for lower-pole kidney stones get rid of remaining fragments over three months.
-
Exploring the link between kidney stones, insulin resistance, and inflammation
This study is trying to see if people with kidney stones have more belly fat and inflammation compared to healthy individuals, to better understand how these factors are linked.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.