Encrusted urinary stents: evaluation and endourologic management

Area of Science:

• Urology
• Endourology
• Biomaterials

Background:

• Ureteral stents and nephrostomy tubes are common urologic devices.
• These devices are associated with morbidities including pain, infection, and encrustation.
• Encrustation of indwelling urinary drainage devices is a significant clinical challenge.

Purpose of the Study:

• To review the literature on encrusted stents and drainage catheters.
• To discuss risk factors contributing to encrustation.
• To describe endourologic evaluation and management strategies for encrusted and retained urinary drainage devices.

Main Methods:

• Literature review of encrusted stents and drainage catheters.
• Discussion of risk factors for encrustation (material, urine composition, duration, urolithiasis history).
• Description of endourologic evaluation and management techniques (imaging, ESWL, ureteroscopy, percutaneous approaches).

Main Results:

• Stent encrustation is influenced by material, urine composition, and duration of use.
• Risk increases with a history of urolithiasis and longer indwelling times.
• Various endourologic interventions are effective depending on encrustation severity and location.

Conclusions:

• Effective management of encrusted stents requires understanding risk factors and appropriate endourologic intervention.
• Novel stent designs show promise in reducing morbidity.
• Clear patient communication and tracking systems are vital to prevent retained devices and complications.