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ORIGINAL ARTICLE
Year : 2019  |  Volume : 30  |  Issue : 6  |  Page : 272-275

Safety and efficacy of percutaneous nephrolithotomy in patients with large stones: A retrospective study


1 Department of Urology, Ditmanson Medical Foundation ChiaYi Christian Hospital, Chiayi, Taiwan
2 Department of Urology, Ditmanson Medical Foundation ChiaYi Christian Hospital, Chiayi; Department of Food Nutrition and Health Biotechnology, Asia University, Taichung, Taiwan
3 Department of Urology, Ditmanson Medical Foundation ChiaYi Christian Hospital, Chiayi; Graduate Institute of Nursing, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan

Correspondence Address:
Prof. Cheng-Huang Shen
Department of Urology, Ditmanson Medical Foundation ChiaYi Christian Hospital, No. 539 Chung Hsiao Road, Chiayi
Taiwan
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/UROS.UROS_10_19

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Aims: The aim of the study is to evaluate the safety and efficacy of tubeless percutaneous nephrolithotomy (PCNL) in patients with large stones. Subjects and Methods: From January 2011 to June 2016, 425 tubeless PCNLs were performed at our hospital. All patients underwent a single-stage procedure with a metal dilator. Of the 425 patients, 93 had stone sizes ≥5 cm (mean: 7.77 cm, Group 1) and 332 patients had stone sizes <5 cm (mean: 2.75 cm, Group 2). Data analysis was performed using Statistical Package for the Social Sciences, V. 21.0. Numerical variables were compared by independent-samples t-test. Categorical variables were compared by Chi-square or Fisher's exact test as appropriate. P < 0.05 was deemed statistically significant. Results: The duration of surgery was longer in Group 1 than in Group 2 (93.6 vs. 70.4 min, P < 0.001). There were no significant differences between the two groups in the incidence of postoperative fever (8% vs. 7%) or sepsis (both 1%). In addition, no significant difference was observed in the length of postoperative hospital stays (3.05 vs. 3.2 days) although the transfusion rate was higher in Group 1 (6/93 vs. 4/332, P = 0.003). No other major complications or conversion to open surgery occurred in either group. Conclusions: Tubeless PCNL performed in patients with stones ≥5 cm in size has a reasonable and acceptably higher transfusion rate, with no other associated major complications.


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