Stricture length and etiology as preoperative independent predictors of recurrence after urethroplasty: A multivariate analysis of 604 urethroplasties

Auteurs-es

  • Adam S. Kinnaird
  • Max A. Levine
  • Druvtej Ambati
  • Jeff D. Zorn
  • Keith Francis Rourke University of Alberta

DOI :

https://doi.org/10.5489/cuaj.1661

Mots-clés :

Urethroplasty, Urethra, Stricture recurrence, Multivariate analysis

Résumé

Introduction: We determine the preoperative identifiable risk factors during staging that predict stricture recurrence after urethroplasty.

Methods: We conducted a retrospective review of all urethroplasties performed at a Canadian tertiary referral centre from 2003 to 2012. Failure was defined as a recurrent stricture <16 Fr oncystoscopic assessment. Multivariate analysis was calculated by Cox proportional hazard regression.

Results: In total, 604 of 651 (93%) urethroplasties performed had adequate data with a mean follow-up of 52 months. Overall urethral patency was 90.7% with failures occurring between 2 weeks and 77 months postoperatively. The average time to recurrence was 11.7 months, with most patients with recurrence within 6 months (42/56; 75%). Multivariate regression identified Lichen sclerosus, iatrogenic, and infectious etiologies to be independently associated with stricture recurrence with hazard ratios (HR) (95% confidence interval) of 5.9 (2.1-16.5; p ≤ 0.001), 3.4 (1.2-10; p = 0.02), and 7.3 (2.3-23.7; p ≤ 0.001), respectively. Strictures ≥5 cm recurred significantly more often (13.8% vs. 5.9%) with a HR 2.3 (1.2-4.5; p ≤ 0.01). Comorbidities, smoking, previous urethroplasty, stricture location and an age ≥50 were not associated with recurrence.

Conclusion: Urethroplasty in general is an excellent treatment for urethral stricture with patency rates approaching 91%. While recurrences occur over 6 years after surgery, most (75%) recur within the first 6 months. Long segment strictures (≥5 cm), as well as Lichen sclerosus, infectious and iatrogenic etiologies, are associated with increased risk of recurrence. Limitations include the retrospective, single-centre nature of the study and the 7% loss to follow-up due to the centre being a regional referral one.

Téléchargements

Les données relatives au téléchargement ne sont pas encore disponibles.

Biographie de l'auteur-e

Keith Francis Rourke, University of Alberta

Associate Professor,

Division of Urology,

Department of Surgery,

University of Alberta

Téléchargements

Publié-e

2014-05-21

Comment citer

Kinnaird, A. S., Levine, M. A., Ambati, D., Zorn, J. D., & Rourke, K. F. (2014). Stricture length and etiology as preoperative independent predictors of recurrence after urethroplasty: A multivariate analysis of 604 urethroplasties. Canadian Urological Association Journal, 8(5-6), e296–300. https://doi.org/10.5489/cuaj.1661

Numéro

Rubrique

Original Research