Factors Associated with Stone-Free Outcome After Retrograde Intrarenal Surgery . Simple model-based clinical decision rule vor RIRS using preoperative variables. Retrograde Intrarenal Surgery Stone-Free Outcome
Conditions
Interventions
Having no residual stone fragment measuring five millimeters or larger.,Retained any stone fragment measuring five millimeters or larger.
Treatment,Treatment
Stone Free group,Non Stone free group
Sponsors
Sichon Hospital
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: 1. Adults aged 18 years or older. 2. Patients who underwent retrograde intrarenal surgery (RIRS) at Sichon Hospital. 3. Complete medical records available, including demographics, stone characteristics, operative data, and postoperative outcomes. 4. RIRS performed between October 2022 and December 2024. 5. Single-stage RIRS only (bilateral allowed if treated within the same operative session). 6. Computed tomography performed at 3 months postoperatively for assessment of stone-free status.
Exclusion criteria
Exclusion criteria: 1. Incomplete or missing medical records. 2. Patients who underwent additional procedures during the same admission. 3. Inability to reliably assess postoperative stone-free status, such as missing or non-interpretable CT imaging. 4. Clinical conditions that interfere with accurate outcome evaluation. 5. Staged or multi-stage RIRS performed on different days (not included in the analysis).
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Preoperative factors At 3 months after end of the operation. Stone free status | — |
Secondary
| Measure | Time frame |
|---|---|
| Clinical decision rule At 3 months after end of the operation. Stone-free status | — |
Countries
Thailand
Contacts
Public ContactAnupong Sawasdee
Sichon Hospital
Outcome results
None listed