Analysis Of Residual Factors Of Stones After Percutaneous Nephrolithotripsy

Objective: Through reviewed from January2012to December2014230cases treated with percutaneous nephrolithotripsy stone surgery in ourhospital, we search and analysis percutaneous nephrolithotripsy relatedfactors of postoperative residual stones, in order to improve the operationefficiency and reduce the residual stone rate reference.Methods: During our hospital from January2012-December2014period230cases of percutaneous nephrolithotripsy surgery retrospectiveanalysis of surgical cases,137cases were male, female93cases, with anaverage age of51.17years (13-80years old), accompanied by low backpain patients accounted for70.43%(162/230), preoperative stonestreatment history of patients34%(84/230) of patients with preoperativehypertension and other underlying diseases22.17%(51/230), surgery leftportion121cases,109cases of right side, staghorn calculi in30cases,166cases of multiple renal calculi, Upper ureteral calculi in34cases. Patientswith hydronephrosis90.43%(208/230) of which188cases ofhydronephrosis mild, moderate hydronephrosis18cases,2cases of severehydronephrosis preoperatively identified188cases with urinary tractinfection, the percutaneous nephrolithotripsy40patients with postoperativeresidual stones, no residues were190cases. Patients according to thepresence or absence of residual stones after percutaneous nephrolithotripsy,into stone residual group (A group)40cases and no residual stones (group B)190cases by summary comparison of preoperative general information,surgery related information using SPSS17.0software for statistical analysis,the residual stone group (A) and no residual stones (group B), age, stonesize of the patient (whichever is the longest diameter), duration of surgery,intraoperative bleeding, using the t test univariate analysis and comparison;other relevant items χ2test univariate analysis. α=0.05was the level oftest, P <0.05, that there is a difference between the individual comparison,the relations between the multiple factors and residual stones bymultivariate logistic regression analysis and by percutaneousnephrolithotripsy stone of postoperative residual stones related factors.Results: Single variable calculus residual group and no residual stonescomparison group analysis:(staghorn calculi)(P=0.003) type of stone,stone size (P=0.014), located in the renal pelvis and renal calyceal calculi(P=0.031), mild hydronephrosis (P=0.017) and operation of urinary tractinfection (P=0.003), surgery continuous time (P=0.001), intraoperativebleeding (P=0.022) respectively in PCNL postoperative residual stoneshave significant correlation.The Logistic regression analysis of multivariable results: stones type (staghorn calculi)(OR=1.183,95%CI:1.044-3.151), preoperative infection (OR=6.149,95%CI:1.357-27.857),operation time (OR=1.423,95%CI:1.248-1.722) had significant correlationwith residual calculi with percutaneous nephrolithotripsy. Conclusion:The percutaneous nephrolithotripsy with residual stones afterpreoperative patients with gallstone types (staghorn calculi), preoperativeexisting urinary tract infection, duration of operation has significantcorrelation.