Overview
The goal of this clinical trial is to determine whether the surgical position during retrograde intrarenal surgery (RIRS) affects stone-free rates in adults with kidney stones. The main questions it aims to answer are:
- Does the modified lithotomy position result in a higher stone-free rate compared to the standard lithotomy position?
- Are there differences in complication rates between the two surgical positions?
Researchers will compare patients undergoing RIRS in the standard lithotomy position to those in the modified lithotomy position (30-degree Trendelenburg with elevated surgical side) to assess its impact on stone clearance and surgical outcomes.
Participants will:
- Be randomly assigned to one of two surgical positions
- Undergo RIRS with standard surgical procedures
- Have follow-up imaging to assess stone clearance after surgery
This study aims to improve surgical techniques and patient outcomes in kidney stone treatment.
Eligibility
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