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The effect of short-term preoperative ureteral stenting on the outcomes of retrograde intrarenal surgery for renal stones

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Abstract

Objectives

To evaluate the effect of preoperative ureteral stenting duration on the outcomes of retrograde intrarenal surgery (RIRS).

Patients and methods

We reviewed our database of patients who underwent RIRS between May 2011 and April 2017 at our institution. The patients were divided into three groups according to preoperative ureteral stenting duration: group 1: no stenting, group 2: short preoperative stenting (< 7 days) and group 3: long preoperative stenting (≥ 7 days). We compared the rate of ureteral injury, other perioperative complications, ureteral dilation and readmission, stone-free rate (SFR) and operative time among the groups.

Results

A total of 560 patients (215 in group 1, 177 in group 2 and 168 in group 3) were included in this study. The mean of maximum stone size was 13.1 (± 6.2) mm, the mean number of stones was 2.3 (± 1.9) and preoperative ureteral stenting duration was 7.2 (± 3.7) days. There were no significant differences in operative time (75.6, 78.5 and 82.4 min, p = 0.280), SFR (79.1, 84.2 and 81.0%, p = 0.433), ureteral injury rate (7.0, 5.1 and 2.4%, p = 0.123) and other perioperative complication rates (12.1, 6.8 and 6.0%, p = 0.061). The only one case of grade IV ureteral injury occurred in group 1 and the rate of ureteral dilation was significantly higher than in group 2 and 3 (14.9, 5.7 and 6.0%, p < 0.001).

Conclusion

Although preoperative ureteral stenting duration has no significant effect on operative outcomes, it is an effective procedure for reducing the rate of intraoperative ureteral balloon dilation and preventing high-grade ureteral injuries.

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Authors and Affiliations

  1. Department of Urology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, 300, Gumi-dong, Bundang-gu, Seongnam, Gyeonggi-do, 463-707, South Korea

    Min Ho Lee, In Jae Lee, Tae Jin Kim, Sang Chul Lee, Chang Wook Jeong, Sung Kyu Hong, Seok-Soo Byun & Jong Jin Oh

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  1. Min Ho Lee
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  2. In Jae Lee
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  3. Tae Jin Kim
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  4. Sang Chul Lee
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  5. Chang Wook Jeong
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  6. Sung Kyu Hong
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  7. Seok-Soo Byun
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  8. Jong Jin Oh
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Contributions

MHL: project development, data analysis, manuscript writing/editing. IJL, TJK: data analysis. CWJ, SCL, SKH, SSB: data collection. JJO: project development, data collection, data analysis, manuscript editing

Corresponding author

Correspondence to Jong Jin Oh.

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Conflict of interest

The authors declare that they have no conflicts of interest with any institution or product.

Ethical approval

We obtained Institutional Review Board approval. All procedures performed in studies were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study formal consent is not required.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Lee, M.H., Lee, I.J., Kim, T.J. et al. The effect of short-term preoperative ureteral stenting on the outcomes of retrograde intrarenal surgery for renal stones. World J Urol 37, 1435–1440 (2019). https://doi.org/10.1007/s00345-018-2519-9

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  • DOI: https://doi.org/10.1007/s00345-018-2519-9

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