• C Torrecilla, A J Vicéns-Morton, I A Meza, S Colom, B Etcheverry, H Vila, and E Franco.
• Servicio de Urología, Hospital Universitario de Bellvitge, Hospitalet de Llobregat, Barcelona, España.
• Actas Urol Esp. 2015 Apr 1; 39 (3): 169-74.

IntroductionClavien-Dindo classification system has been proposed to grade perioperative complications in percutaneous nephrolithotomy. The complications of this technique that have taken place in the last 2 years are reported in this paper according Clavien-Dindo classification.Materials And MethodsBetween 2011 and 2012 a total of 255 percutaneous nephrolithotomy were performed at our center for stones more than 2 cm in size. In order to determine the incidence of complications classified in the modified Clavien-Dindo system, statistical analysis of the data obtained was carried out.ResultsDuring the period analyzed, 255 percutaneous nephrolithotomy were performed in 249 patients, 41% of the right side, 57% of the left side and 2% bilateral and simultaneous. 137 and 112 patients were males and females, respectively. The most prevalent comorbidities were: hypertension (AHT) in 101 patients (40.6%), BMI>30 in 81 patients (32%), diabetes mellitus in 46 patients (18.5%) and coagulation abnormalities in 24 patients (9.6%). A total of 70 cases (27.4%) were distributed according to Clavien-Dindo classification: grade i, 8.4%, grade ii 8.4%, grade iiia 4.4%, grade iiib 6% grade iva .8%, grade ivb: 0% and grade v 0%.ConclusionsA graded classification scheme for reporting the complications of percutaneous nephrolithotomy is useful for monitoring and reporting outcomes. We propose a standardized use of this classification in order to make the results comparable among different centers performing the technique.Copyright © 2014 AEU. Publicado por Elsevier España, S.L.U. All rights reserved.

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