Factors affecting the durability of flexible ureteroscopes: An academic center review

Authors

  • Natsirin Hongviboonvate Division of Urology, Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand
  • Siros Jitprapai Division of Urology, Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand
  • Thawatchai Mankongsrisuk Division of Urology, Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand
  • Tawatchai Taweemonkongsap Division of Urology, Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand
  • Varat Woranisarakul Division of Urology, Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand
  • Chaiyong Naulyong Division of Urology, Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Thailand

Keywords:

Flexible ureteroscopes, durability, URF-V, holmium laser

Abstract

Objective:  To analyze the factors which affect the durability of the flexible ureteroscope and the causes of scope damage in a single academic center.

Material and Method:  Between March 2014 and August 2017, 479 flexible ureteroscopic procedures, using 6 flexible ureteroscopes (Olympus model URF-V),
were systematically reviewed. Data including indication for procedures, auxiliary device usage, the characteristics of scope damage, and the number of times a
scope was used before requiring major repair were gathered. Fisher exact test and Chi-square test were used to evaluate the factors which caused the damage.

Results:  The major flexible ureteroscopic procedure performed was treatment of renal calculi (81%). The most common auxiliary device used was the Holmium laser (70%). The most common cause of damage requiring repair was working channel leakage (93%). The factor that affected the durability of flexible ureteroscopes was the size of laser fiber. Utilizing laser fiber 200 nm decreased scope damage significantly compared to various other sizes (p-value=0.002 and p-value<0.001). However, the usage of nitinol basket and ureteral access sheath did not affect the durability of flexible ureteroscopes.

Conclusion:  Large laser fibers are a risk factor for flexible ureteroscope damage. Utilizing small laser fibers during flexible ureteroscopy can decrease scope damage significantly 

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References

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Published

2020-12-02

How to Cite

Hongviboonvate, N., Jitprapai, S., Mankongsrisuk, T., Taweemonkongsap, T., Woranisarakul, V., & Naulyong, C. (2020). Factors affecting the durability of flexible ureteroscopes: An academic center review. Insight Urology, 41(2), 88–94. Retrieved from https://he02.tci-thaijo.org/index.php/TJU/article/view/247865

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