Renal infection after extracorporeal shock wave lithotripsy to treat renal colic period of ureteral calculi

Objective To study the factors of renal infection developed after extraeorporeal shock wave lithotripsy (ESWL) to treat ureteral calculi.Methods 278 patients with ureteral calculi were received ESWL to treat ureteral calculi at this hospital from June 2006 to June 2009,including 128 patients with renal colic(experimental group)and 150 patients without it(control group).The renal infection developed after ESWL was compared between the two groups.Results There was statistically significant difference in percentage of renal infection occurrence between the experimental group and the control group(P0.001).There was statistically signifieant difference between in percentage of renal infection occurrence between lower ureteral stone and upper or middle ureteral stone in experimental group(P=0.02).Conclusions Patients with ureteral stones and renal colic before ESWL have high percentage of renal infection occurrence.Patients with lower ureteral stones and renal colic before ESWL have high percentage of renal infection occurrence.