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논문 기본 정보

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학술저널
저자정보
Nariman Gadzhiev (The Nikiforov Russian Center of Emergency and Radiation Medicine) Brovkin Sergei (The Nikiforov Russian Center of Emergency and Radiation Medicine) Vladislav Grigoryev (The Nikiforov Russian Center of Emergency and Radiation Medicine) Zhamshid Okhunov (University of California) Arvind Ganpule (Muljibhai Patel Urological Hospital) Aleksei Pisarev (The Saint-Petersburg State University clinic) Yerbol Iskakov (Second City Hospital) Sergei Petrov (The Nikiforov Russian Center of Emergency and Radiation Medicine)
저널정보
대한비뇨기과학회 Investigative and Clinical Urology Investigative and Clinical Urology Vol.58 No.3
발행연도
2017.1
수록면
179 - 185 (7page)

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Purpose: To evaluate the effect of ‘Bernoulli maneuver’ (bringing the access sheath to horizontal plane) on operative time and stone free rates in patients undergoing mini-percutaneous nephrolithotomy (PCNL). Materials and Methods: All consecutive patients with a solitary kidney stone undergoing a mini-PCNL between 2015 and 2016 were included into this study. Patients were randomized either to standard prone or control (C) group patients or to tilted prone with ‘Bernoulli maneuver’ group (B) patients. Pre-, intra-, and postoperative characteristics of these 2 groups were recorded and analyzed. Results: A total of 67 patients were included in the study. Of these, 40 patients were randomized to group C and 27 to group B. The mean (95% confidence limits) stone size (mm) in group C and B was 14 (13, 15) and 13 (11, 14), respectively (p=0.26). Nephroscopy time was shorter in Bernoulli group (35 minutes vs. 23 minutes, p=1.5·10-5, and Bayes factor BF10=2,340, and Cohen standardized effect size dst=1.2). The difference made it up 12 minutes (with 95% confidence interval from 8 to 18 minutes). There were no statistically significant differences between groups regarding white blood cell, creatinine level and stone-free status defined by computed tomography on the first postoperative day. Conclusions: In our study the ‘Bernoulli maneuver’ led to a shorter nephroscopy time in mini-PCNL. This maneuver can significantly reduce nephroscopy time and save significant amount of operative time, especially in tertiary referral centers with high-volume mini-PCNL procedures.

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