Association of a 0.85 Ratio of Endoscope-Sheath Diameter Threshold with Infectious Complications after Retrograde Intrarenal Surgery: A Two-Institution Retrospective Cohort Study - PubMed
3 hours ago
- #Risk Stratification
- #Surgical Complications
- #Urology
- The study investigated the impact of the endoscope-sheath diameter ratio (RESD) on infectious complications after retrograde intrarenal surgery (RIRS).
- A threshold of RESD >0.85 was significantly associated with higher infection rates compared to ≤0.85 (14.6% vs. 4.1%), while a conventional threshold of <0.75 did not show significant risk discrimination.
- Infection rates increased stepwise across RESD categories: 2.6% (<0.75), 4.6% (0.75 to <0.85), and 14.6% (>0.85).
- Multivariable analysis confirmed RESD >0.85 and positive stone culture as independent predictors of infectious complications.
- The findings suggest that a RESD threshold of 0.85 offers better risk stratification for post-RIRS infections than the traditional target.