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Articles

Surgical and radiological predictive factors for ureteric stricture formation in patients treated with ureteroscopy for ureteric stones

ORCID Icon, ORCID Icon, , , , , , & show all
Pages 394-398 | Received 01 Jun 2021, Accepted 05 Jul 2021, Published online: 06 Aug 2021
 

Abstract

Background

Ureteric stricture is a potential complication of impacted ureteric stones. This study investigates surgical and radiological factors that could predict ureteric stricture formation after ureteroscopic treatment of impacted ureteric stones.

Materials and method

Intraoperative and radiological data for patients who underwent ureteroscopic treatment of ureteric stones impaction over a 5-year period were reviewed retrospectively. Patients who had previous ureteroscopic treatment or strictures were excluded.

Results

Between January 2014 and May 2019, 1,340 patients presented as emergency renal colic secondary to ureteric stones. A total of 297 ureteroscopy procedures were performed for impacted calculi. The mean age was 53 years. The stricture rate was 3.3%. Analysis of radiological and surgical factors revealed that the degree of hydronephrosis, residual fragments and intraoperative ureteric injury were significant predictors for stricture formation (p = 0.018, 0.01 and 0.02, OR = 10, 47 and 1776, respectively). None of the other factors significantly predicted ureteric stricture formation.

Conclusion

Our study found the presence of severe hydronephrosis, residual stone fragments after surgery and intraoperative ureteric injury are significant predictive factors for ureteric stricture formation. The high-risk patients should be monitored with routine postoperative renal ultrasound.

Ethics approval

Registered locally as QI4600, the principles of the Helsinki Declaration were followed.

Disclosure statement

The authors report no conflicts of interest.

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