Application of memory metallic stents to urinary tract disorders in pediatric patients

Area of Science:

• Urology
• Pediatric Surgery
• Biomaterials

Background:

• Urinary tract disorders in children can lead to significant complications.
• The use of memory metallic stents in pediatric urinary tract applications has not been previously documented.
• Nickel-titanium alloy stents offer unique thermoexpandable properties.

Purpose of the Study:

• To evaluate the safety and efficacy of memory metallic stents in pediatric patients with urinary tract disorders.
• To report the outcomes of using thermoexpandable nickel-titanium alloy stents in two pediatric cases.

Main Methods:

• A thermoexpandable, nickel-titanium alloy stent was utilized.
• In one case, the stent was placed at the urethroureteral junction for ureteral stenosis associated with cloacal exstrophy.
• In the second case, the stent was inserted into the urethra for ischuria following cloacal anomaly repair.

Main Results:

• Successful treatment outcomes were achieved in both pediatric patients.
• The stent placement was effective in managing ureteral stenosis and ischuria.
• Temporary insertion of the memory metallic stent proved to be a viable solution.

Conclusions:

• Temporary insertion of memory metallic stents is a safe and effective alternative for pediatric urinary tract strictures or functional obstructions.
• This innovative approach addresses a gap in the reported literature for pediatric urinary tract interventions.
• Memory metallic stents represent a promising therapeutic option for complex pediatric urological conditions.