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Novel method to decrease the exposure time of the extraction string of the ureteral stent and its efficiency and
WenGang Hu1,2,3, YaJun Song1, Yang Li4
1Urology Department, The 2nd Affiliated Hospital, The Army Medical University of China, No. 183, XinQiao Street, ShaPingBa District, Chongqing, 400037, People's Republic of China.
Scientific Reports
|November 17, 2021
Summary
A novel method for ureteral stent string management reduces external string exposure, improving patient comfort and lowering complication rates. This technique enhances safety and reduces overall medical costs for patients undergoing ureteroscopy.
Area of Science:
- Urology
- Minimally Invasive Surgery
- Medical Device Technology
Background:
- Ureteral stent removal using extraction strings offers advantages but poses risks due to prolonged external string exposure.
- Managing complications associated with indwelling ureteral stents and their extraction strings is crucial for patient outcomes.
- Current methods for determining ureteral stent string length may lead to increased patient discomfort and potential complications.
Purpose of the Study:
- To introduce and evaluate a novel method for ureteral stent string management aimed at decreasing external string exposure time.
- To assess the efficiency and safety of this novel method compared to the standard approach in a retrospective study.
- To analyze the impact of the novel method on patient comfort, stent-related complications, and healthcare costs.
Main Methods:
- A retrospective study involving 231 male patients undergoing ureteroscopy (URS) with indwelling ureteral stents with strings.
- Patients were divided into two groups: Normal-S (standard string length determination) and Novel-S (novel method: Lstring = Lurethra + 2 cm).
- Key variables recorded included demographic data, stent indwelling and removal parameters, complication rates (e.g., UTI), pain scores (VAS), and medical costs.
Main Results:
- No significant differences were observed in demographic characteristics, UTI rates, URS operative duration, or stent removal pain scores between groups.
- The Novel-S group experienced longer stent dwelling times, reduced self-rated discomfort and symptoms, and lower stent dislodgement rates.
- The Novel-S group also showed fewer clinic/emergency visits and lower overall post-operative medical costs, despite a longer stent removal time and lower rate of manual stent removal.
Conclusions:
- The novel method for ureteral stent string length determination is safe, reliable, and improves patient comfort during stenting.
- This technique effectively reduces ureteral stent dislodgement, associated complications, and overall healthcare expenses.
- The proposed method merits widespread clinical application due to its demonstrated benefits in patient care and cost-effectiveness.

