Abstract：Objective To investigate the application value of the grading system of Guy's,the scoring system of S.T.O.N.E. and SHA.LIN in percutaneous nephrolithotomy.Methods The clinical data of patients with kidney calculi and treated with percutaneous nephrolithotomy(PCNL) from May 2018 to June 2016 were retrospectively collected.According to the criterion of the following three nephrolithometry scoring systems,we quantified the characteristics of preoperative stones in patients,analysed and compared the correlations between the following three scoring systems and the stone clearance rate,the perioperative complications, the total hemorrhages quantities and the operation time.Results A total of 142 patients were observed, who were treated with PCNL.The stone free rate was 66.9%(95/142) and complications occurred in 43 cases(30.3%).The three scoring systems were closely related to the postoperative clear stone rate,the intraoperative blood loss and the operation time(P＜0.05),but only the SHA.LIN neprolithometry score was associated with estimated blood loss(P=0.023).The scoring systems of Guy's,S.T.O.N.E. and SHA.LIN were different in areas under the curves(AUC),their values were 0.742,0.828,0.894,repestively.Conclusions The following three systems of kidney stones all have the ability to improve the assessment of the disease. The three scoring systems are closely related to the postoperative clear stone rate,the intraoperative blood loss and the operation time, however the scoring system of SHA.LIN is superior to the Guy's stone score and the S.T.O.N.E. nephrolithometry scoring systems in the aspects of estimating blood loss and clearing stone rate.
