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International Urology and Nephrology
Published in: International Urology and Nephrology 5/2024

20-12-2023 | Ureterorenoscopy | Urology - Original Paper

Ureteral stone volume and female gender predicts perioperative complications after complete ipsilateral upper urinary tract stone removal using flexible ureterorenoscopy

Authors: Takahiko Watanabe, Mitsuru Komeya, Hisakazu Odaka, Hirokazu Kiuchi, Yusuke Saigusa, Kazuhide Makiyama, Junichi Matsuzaki

Published in: International Urology and Nephrology | Issue 5/2024

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Abstract

Purpose

To identify the risk factors for perioperative complications to prevent perioperative complications after complete ipsilateral upper urinary stone removal using flexible ureterorenoscopy.

Materials and methods

We retrospectively examined 111 patients who underwent flexible ureterorenoscopy for ipsilateral renal stones with a diameter ≥ 5 mm at the same time as ureterorenoscopy for ureteric stones. The flexible ureterorenoscopy procedures were performed following the fragmentation technique. Patients who experienced (complication group) and did not experience (non-complication group) perioperative complications were compared. The complication group included 33 patients with Clavien–Dindo classification scores of I, II, III, or IV and/or those with a body temperature of > 37.5 ℃ during hospitalization.

Results

The overall stone volume, stone-free rate and procedure duration were 1.71 mL, 96.4% and 77 min, respectively. The rate of perioperative complications was 29.7% (grade 1, 2 and 3 was 23.4%, 5.4% and 0.9%, respectively). Severe complications (Clavien–Dindo grade 4) were not observed. Multivariable analysis revealed that ureteral stone volume and female patients were independent predictors of perioperative complications after flexible ureterorenoscopy (p = 0.015 and 0.017, respectively).

Conclusions

This study showed that ureteral stone volume and female gender have the possibility to increase perioperative complications. These preliminary data help to select for patients who are at low risk of complications. Therefore, in these selected patients, complete ipsilateral upper urinary tract stone removal using flexible ureterorenoscopy may reduce the recurrence of urolithiasis without increasing perioperative complications.
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Metadata
Title
Ureteral stone volume and female gender predicts perioperative complications after complete ipsilateral upper urinary tract stone removal using flexible ureterorenoscopy
Authors
Takahiko Watanabe
Mitsuru Komeya
Hisakazu Odaka
Hirokazu Kiuchi
Yusuke Saigusa
Kazuhide Makiyama
Junichi Matsuzaki
Publication date
20-12-2023
Publisher
Springer Netherlands
Published in
International Urology and Nephrology / Issue 5/2024
Print ISSN: 0301-1623
Electronic ISSN: 1573-2584
DOI
https://doi.org/10.1007/s11255-023-03899-1

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