J. Gómez-Sánchez, M. Cantellano-Orozco, J.G. Morales-Montor, G. Fernández-Noyola, C. Pacheco-Gahbler, V. Cornejo-Dávila, J.A. Herrera-Muñoz, D.A. Preciado-Estrella
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引用次数: 1
Abstract
Background
Percutaneous nephrolithotomy (PNL) is a procedure with precise indications. An evaluation method for predicting the stone-free rate after PNL is needed. The Guy's stone score and the S.T.O.N.E. score are based on stone number and size, kidney anatomy, tract length, obstruction, the calyces involved, and Hounsfield units.
Aim
To evaluate the Guy's stone score and the S.T.O.N.E. score as stone-free rate predictors in percutaneous nephrolithotomy.
Material and Methods
A retrospective study of patients managed with PNL within the time frame of January 2013 to June 2015 was conducted. The Guy's stone score and the S.T.O.N.E. score were evaluated as stone-free rate predictors. Statistical analysis was done using the chi-square test (SPSS).
Results
Twenty-two patients were included, 10 women (45%) and 12 men (55%), and their mean age was 44 years. The stone-free rate was 63%. The Guy's stone score was correlated with a stone-free rate (P=.04), whereas the S.T.O.N.E. score had no relation (P=.7). The absence of ectasia was correlated with a higher stone-free rate (42%). Eighty-five percent of the patients without nephrostomy at the time of surgery resulted stone-free. Mechanical energy was the most widely utilized form of energy for lithotomy, being used in 45% of the patients. One renal pelvis perforation and bleeding were the complications that prevented the procedure from being finished, but transfusion was not required.
Conclusions
Correlation was found with the Guy's stone score, but there was no statistically significant difference in the S.T.O.N.E. score. The Guy's stone score had statistical value, but a greater number of patients are needed to increase the correlation of the 2 scores in our hospital.
期刊介绍:
Revista Mexicana de Urología (RMU) [Mexican Journal of Urology] (ISSN: 0185-4542 / ISSN electronic: 2007-4085) is bimonthly publication that disseminates research by academicians and professionals of the international medical community interested in urological subjects, in the format of original articles, clinical cases, review articles brief communications and letters to the editor. Owing to its nature, it is publication with international scope that disseminates contributions in Spanish and English that are rigorously reviewed by peers under the double blind modality. Neither journalistic documents nor those that lack rigorous medical or scientific support are suitable for publication.