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• W1993429508 abstract "Background and Purpose: Operative time is an important perioperative factor and is related to postoperative complications and procedural cost-effectiveness. There are few studies, however, investigating factors that affect operative time during percutaneous nephrolithotomy (PCNL). In this study, patient and kidney stone-related factors that influence operative time were analyzed. Materials and Methods: Clinical records from 1897 patients with renal calculi who underwent PCNL were retrospectively reviewed, and these patients were divided into two groups based on their median operative time (group 1: ≤60 min; group 2: >60 min). Multivariate analyses as well as univariate analyses including chi-square, Fisher exact and Mann Whitney U tests were used to investigate the effects of independent variables on operative time, including patient and kidney stone-related factors such as age, sex, body mass index, history of ipsilateral open surgery, shockwave lithotripsy, presence of hydronephrosis, stone burden, stone type and opacity, and surgical experience. Results: The mean operative time was 64.9±27.6 minutes (range 10–220 min). Univariate analyses determined that a history of open surgery, presence of hydronephrosis, stone type and size, and surgical experience correlated with operative time (P<0.05 for all). Multivariate analyses revealed that presence of hydronephrosis (odds ratio [OR]: 1.44, 95% confidence interval [CI]: 1.17–1.78, P=0.002), stone type (OR: 2.12, 95% CI: 1.69–2.70, P<0.0001), stone burden (OR: 2.44, 95% CI: 1.85–3.12, P<0.0001), and surgical experience (OR: 0.56, 95% CI: 0.46–0.70, P<0.0001) were significant independent factors in influencing operative time. Conclusions: Presence of hydronephrosis, renal stone size and type significantly affect the operative time during PCNL. The duration of the operation was also observed to decrease with increased surgical experience." @default.
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• W1993429508 date "2011-08-01" @default.
• W1993429508 modified "2023-10-01" @default.
• W1993429508 title "Variables That Influence Operative Time During Percutaneous Nephrolithotomy: An Analysis of 1897 Cases" @default.
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• W1993429508 doi "https://doi.org/10.1089/end.2011.0061" @default.
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