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What is the best nomogram to predict percutaneous nephrolithotripsy success? Comparative study between the Guy's Stone Score, S.T.O.N.E. score and CROES nomogram

Grant number: 13/24960-3
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): April 01, 2014
Effective date (End): March 31, 2015
Field of knowledge:Health Sciences - Medicine - Surgery
Principal Investigator:Fabio Carvalho Vicentini
Grantee:Felipe Ribeiro Serzedello
Host Institution: Faculdade de Medicina (FM). Universidade de São Paulo (USP). São Paulo , SP, Brazil


Nephrolithiasis is a common disease in medical practice, with high prevalence and recurrence, constituting one of the most common disorders of the urinary tract, and generating high costs for the health system, and being a preventable cause of morbidity. Treating this disease is mainly surgical and advanced substantially in recent years. Among the minimally invasive techniques highlights the percutaneous nephrolithotripsy (PCNL), such as modality of choice for the treatment of complex renal calculi and/or high volume. Despite the establishment of PCNL as one of the most important methods for the treatment of renal lithiasis currently, no nomogram was standardized as the gold standard for predicting success and complications associated with this surgery. The primary objective of this study is to compare three nomograms that have been highlighted in the literature (Guy's Stone Score, S.T.O.N.E. Score, and CROES nomogram) for the ability to reliably predict the success rate and complications in PCNL, while the secondary objective is to compare the application time of the nomograms in each case, thereby evaluating the nomogram more effective and faster to use. (AU)

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