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Ureteral stent failure in pediatric patients under 10 years: occurrence and risk factors
Yong Seung Lee1, Young Jae Im1, Sang Woon Kim1
1Department of Urology and Urological Science Institute, Yonsei University College of Medicine, Seoul, Republic of Korea.
Insights
Ureteral stent failure occurred in 9.6% of pediatric patients under 10 years old. A 3-Fr stent significantly increased failure risk, necessitating careful consideration and close monitoring.
Area of Science:
- Pediatric Urology
- Medical Device Performance
- Surgical Outcomes
Background:
- Ureteral stenting is a common procedure in pediatric patients.
- Understanding stent failure rates and risk factors is crucial for optimizing patient care.
Purpose of the Study:
- To investigate ureteral stent failure occurrence in children under 10 years.
- To identify specific risk factors associated with stent failure in this age group.
Main Methods:
- Retrospective cohort analysis of 100 pediatric patients (<10 years) undergoing ureteral stent insertion.
- Data collected included demographics, stent characteristics, and outcomes.
- Risk factors for stent failure were statistically analyzed.
Main Results:
- A 9.6% ureteral stent failure rate was observed in 114 ureter units.
- The use of a 3-Fr ureteral stent was identified as the sole significant risk factor for failure.
- Stents with a 3-Fr diameter had a 20.0% failure rate.
Conclusions:
- Ureteral stenting demonstrates a high success rate in pediatric patients.
- The 3-Fr stent diameter presents a substantial risk for failure and warrants cautious use.
- Close follow-up and re-evaluation are essential post-stent insertion, particularly for 3-Fr stents.
Objective:
To examine the occurrence of ureteral stent failure in pediatric patients aged <10 years and to determine risk factors for failure.
Methods:
We performed a retrospective cohort analysis of 100 patients who underwent ureteral stent insertion between January 2006 and December 2013. All patients were aged <10 years and were followed up until ureteral stent removal. Information regarding patient demographics, reason for stent insertion, duration of stent maintenance, stent diameter and length, and postoperative results was collected. Risk factors for stent failure were analyzed.
Results:
Ureteral stenting was performed in 114 ureter units. The median age at stenting was 34.1 months (interquartile range [IQR], 8.1-71.2 months), and the median duration of stent maintenance was 35.0 days (IQR, 21.0-44.3 days). A 3-Fr stent was used in 39.5% of patients. Stent failure was observed in 11 ureter units (9.6%) at a median of 11.5 days (IQR, 7.8-24.5 days) after insertion, and the stent was subsequently removed. Use of a 3-Fr ureteral stent was the only risk factor for the development of stent failure; the failure rate was 20.0% with this stent diameter.
Conclusion:
Ureteral stenting was a useful procedure with a high success rate, even in patients aged <10 years. A 3-Fr ureteral stent was the only risk factor for stent failure; its substantial failure rate should be considered when deciding whether to insert a stent. Also, short-term re-evaluation after ureteral stent insertion is mandatory, especially with 3-Fr ureteral stents.
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