Semirigid ureteroscopy for ureteral stones: a multivariate analysis of unfavorable results

We determined the factors predicting unfavorable results of semirigid ureteroscopy for ureteral calculi. We reviewed the computerized files of 841 patients who underwent a total of 908 ureteroscopic procedures for ureteral stones from January 2003 through December 2006. A semirigid 6/7.5Fr ureterosc...

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Bibliographic Details
Published inThe Journal of urology Vol. 181; no. 3; p. 1158
Main Authors El-Nahas, Ahmed R, El-Tabey, Nasr A, Eraky, Ibrahim, Shoma, Ahmed M, El-Hefnawy, Ahmed S, El-Assmy, Ahmed M, Soliman, Shady, Youssef, Ramy F, El-Kenawy, Mahmoud R, Shokeir, Ahmed A, El-Kappany, Hamdy A
Format Journal Article
LanguageEnglish
Published United States 01.03.2009
Subjects
Adolescent
Adult
Aged
Aged, 80 and over
Child
Child, Preschool
Equipment Design
Female
Humans
Male
Middle Aged
Multivariate Analysis
Ureteral Calculi - therapy
Ureteroscopes
Ureteroscopy
Young Adult
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Summary:We determined the factors predicting unfavorable results of semirigid ureteroscopy for ureteral calculi. We reviewed the computerized files of 841 patients who underwent a total of 908 ureteroscopic procedures for ureteral stones from January 2003 through December 2006. A semirigid 6/7.5Fr ureteroscope was used in pediatric patients and an 8/10Fr or 8.5/11.5Fr ureteroscope was used in adults. Patients with favorable results were those who became stone-free after a single ureteroscopic procedure without any complications. They were compared with patients who had unfavorable results using univariate (chi-square and t tests) and multivariate (logistic regression) statistical tests to identify risk factors for unfavorable results. The study included 567 males and 274 females with a mean age of 48.5 years (range 2 to 81). The complication rate was 6.7% (61 procedures). The stone-free rate after a single ureteroscopic intervention was 87% (791 procedures). Favorable results were documented in 751 procedures (82.7%). Significant factors for unfavorable results were proximal ureteral stones, ureteroscopy done by surgeons other than experienced endourologists, stone impaction and stone width (relative risk 4, 2.5, 1.8 and 1.2, respectively). Semirigid ureteroscopy is a safe and highly effective treatment modality for ureteral stones.
ISSN:1527-3792
DOI:10.1016/j.juro.2008.10.167