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Urinary Tract Infectious Complications After Retrograde Intrarenal Surgery: The RIRS-STAMP Risk Score from a

Mehmet Ozturk¹, Huseyin Cihan Demirel², Ilker Seckiner¹

¹Department of Urology, Gaziantep University, Gaziantep 27310, Türkiye.

Pathogens (Basel, Switzerland)

|May 27, 2026

Summary

This summary is machine-generated.

Postoperative infections after retrograde intrarenal surgery (RIRS) are a concern. A new RIRS-STAMP score identifies patients at high risk for infection, aiding personalized care.

Keywords:

retrograde intrarenal surgery urinary tract infection urosepsis

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Area of Science:

Urology
Surgical Infections
Medical Risk Stratification

Background:

Postoperative infectious complications following retrograde intrarenal surgery (RIRS) can lead to sepsis.
Identifying risk factors is crucial for managing these challenging complications.

Purpose of the Study:

To identify perioperative risk factors for infection after RIRS.
To develop a practical risk stratification model for predicting postoperative infection.

Main Methods:

Retrospective analysis of 1949 patients undergoing RIRS.
Evaluation of infectious outcomes including febrile urinary tract infection (UTI), sepsis, and septic shock.
Multivariable logistic regression to identify independent predictors of infection.

Main Results:

Infectious complications occurred in 8.1% of patients.
Independent predictors of infection included older age, preoperative JJ stenting, longer operative time, and prior UTI.
The RIRS-STAMP score demonstrated good predictive discrimination (AUC 0.84).

Conclusions:

Infection risk after RIRS is multifactorial, influenced by host and procedural factors.
The RIRS-STAMP score facilitates early identification of high-risk patients.
Prospective external validation is needed for routine clinical application.