Category: Stones: Ureteroscopy

VS1-13 - Comparison of the Factors Affecting the Durability of Flexible Ureterorenoscope for Renal Stone Therapy Retrospectively

Fri, Sep 21
10:00 AM - 12:00 PM

Introduction & Objective :

Retrograde intra renal surgery (RIRS) is defined as the treatment of kidney stones by using a flexible ureterorenoscope (FURS) and laser energy being one of the most popular minimal invasive treatment methods. It has a high efficiency with low complication rates. However, higher costs of FURS and its short durability is one of the most debated disadvantages. In this study we aimed to evaluate the factors that are responsible for durability of FURS.


Methods :

The data of 559 patients who underwent RIRS with 9 separate FURS between 2010 and 2016 were investigated retrospectively. The mean stone surface, mean stone density, mean length of operation, stone localisations and presence of preoperative DoubleJ stents were compared in 9 separate FURS groups<./p>


Results :

A total of 22, 17, 18, 56, 111, 90, 96, 76 and 73 cases were performed in these 9 groups. Differences  were obtained regarding length of operation, stone surface, stone density and stone localizations within groups. First of all, we noticed mean operation time which was 76 minutes in group 1 which decreased to 37.5 minutes in group 3 making this change statistically significant. The mean stone surface in these two groups were statistically similar and also lower pole stone ratio was %72 and %22 (pic1). Second, we noticed that mean operation time which was 37.5 minutes in group 3 was statistically increased in group 4, 5, 6 and 7. Lower pole stone ratio was 22% in group 3, and it changes 40% to 60% in the other groups (pic2). Likewise we observed that the number of operations in the last groups tends to decrease, while mean stone surface increased. Stone localisations were similar in this last groups (pic3).


Conclusions :

Lower pole surgery causes longer operation time without adequate experience regardless of the stone area. Even in the hands of more experienced professionals, lower pole stones designate longer interventions  than other localizations. The Number of operations that we defined as durability of devices is affected by stone surface. However, no connection was found between stone density and the durability of the device.

Kadir Ö. Günseren

Specialist Doctor
Uludag University School of Medicine Department of Urology
bursa, Bursa, Turkey

I earned my degree in the İstanbul University of Medicine and Pharmacy. Currently, I am employed as a an urologist at Urology department of Uludag University of Medicine. İ am working for aproximately 9 years in this department (residency and the first part of my specialist career) i interest about laroscopic skills, transplantation, endourology procedures and open surgery.

Mehmet Ç.. Çicek

Bursa, Bursa, Turkey

Hakan Kılıçcarslan

Bursa, Bursa, Turkey