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Войти в исследования Scandinavian journal of urology · 2015
Impact of hours worked by a urologist prior to performing ureteroscopy on its safety and efficacy.
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Seklehner Stephan, Heißler Ortwin, Engelhardt Paul F, Hruby Stephan, Riedl Claus
Аннотация
OBJECTIVE: The aim of this study was to evaluate the impact of hours worked by a urologist before performing ureteroscopy on its safety and efficacy.
MATERIALS AND METHODS: Patients treated at a single institution from January 2010 to December 2013 were analyzed. The study assessed patient, stone and surgical parameters, stone-free rates and intraoperative complications performed in three work duration categories: less than 6 h, 6-12 h and more than 12 h of urologist's work. Statistical analyses included the chi-squared test, Kruskal-Wallis test, and univariate and multivariate logistic regression analyses.
RESULTS: In total, 469 ureteroscopies were analyzed. Intraoperative complications differed non-significantly in the corresponding time categories: ureteral perforations (< 6 h 4.4%, 6-12 h 3.2%, > 12 h 7%, p = 0.46) and avulsions (all 0%). Rates for complete stone removal were 82% within the first 12 h vs 70.2% after 12 h (p = 0.03). Corresponding partial stone-free rates were 4.1% vs 3.5% (p = 0.83) and rates of unsuccessful ureteroscopy were 13.8% vs 26.3% (p = 0.01). In multivariate regression analysis, patients treated after 12 h of urologist's work had a 2.4 times higher risk of an unsuccessful ureteroscopy [odds ratio (OR) = 2.4, 95% confidence interval (CI) 1.2-4.7, p = 0.001] and lower chances of complete stone removal (OR = 0.46, 95% CI 0.24-0.89, p = 0.02). The odds of ureteral perforations were similar (p = 0.28).
CONCLUSION: Work duration before ureteroscopy did not affect its safety. Stone-free rates decreased with increasing working time. Working time exceeding 12 h was identified as an independent risk factor for impaired stone-free rates.
MATERIALS AND METHODS: Patients treated at a single institution from January 2010 to December 2013 were analyzed. The study assessed patient, stone and surgical parameters, stone-free rates and intraoperative complications performed in three work duration categories: less than 6 h, 6-12 h and more than 12 h of urologist's work. Statistical analyses included the chi-squared test, Kruskal-Wallis test, and univariate and multivariate logistic regression analyses.
RESULTS: In total, 469 ureteroscopies were analyzed. Intraoperative complications differed non-significantly in the corresponding time categories: ureteral perforations (< 6 h 4.4%, 6-12 h 3.2%, > 12 h 7%, p = 0.46) and avulsions (all 0%). Rates for complete stone removal were 82% within the first 12 h vs 70.2% after 12 h (p = 0.03). Corresponding partial stone-free rates were 4.1% vs 3.5% (p = 0.83) and rates of unsuccessful ureteroscopy were 13.8% vs 26.3% (p = 0.01). In multivariate regression analysis, patients treated after 12 h of urologist's work had a 2.4 times higher risk of an unsuccessful ureteroscopy [odds ratio (OR) = 2.4, 95% confidence interval (CI) 1.2-4.7, p = 0.001] and lower chances of complete stone removal (OR = 0.46, 95% CI 0.24-0.89, p = 0.02). The odds of ureteral perforations were similar (p = 0.28).
CONCLUSION: Work duration before ureteroscopy did not affect its safety. Stone-free rates decreased with increasing working time. Working time exceeding 12 h was identified as an independent risk factor for impaired stone-free rates.