Effect of surgical position on kidney stone removal success

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

This clinical trial investigates how the surgical position during retrograde intrarenal surgery (RIRS) influences the success rate of removing kidney stones in adults. Participants will be randomly assigned to either a standard lithotomy position or a modified lithotomy position, which includes a 30-degree Trendelenburg tilt. The study aims to compare stone-free rates and complication rates between the two positions after the procedure. Follow-up imaging will be conducted to evaluate the effectiveness of the surgical approach.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Presence of single or multiple kidney stones, with the largest stone ≤2 cm
* Age ≥18 years
* Provided written informed consent to participate in the study
* Indicated for retrograde intrarenal surgery (RIRS) as a treatment approach

Exclusion Criteria:

* Severe cardiovascular disease (e.g., heart failure)
* Congenital kidney anomalies (e.g., horseshoe kidney, ectopic kidney)
* Concurrent ureteral stones
* Pregnancy or planning pregnancy
* History of previous kidney surgery on the same side
* Active urinary tract infection (UTI)
* Coagulopathy or use of anticoagulant therapy that cannot be stopped before surgery

Where it's running

• Ondokuz Mayıs University
  Samsun, Turkey (Türkiye) Recruiting

Study contacts

• Principal investigator: Murat Gulsen — Ondokuz Mayıs University
• Study coordinator: Murat Gulsen
• Email: mglotr@gmail.com
• Phone: +905062357421

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

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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.