Comparison of clinical effect of RIRS using for different size of rental stones

Abstract

Objective To investigate the application of different sizes of renal calculi retrograde intrarenal operation （ RIRS） in the clinical treatment effect.Methods 120 cases of the implementation of RIRS operation in patients with kidney stones were retrospectively analyzed, according to the size of stone were divided into A group （CM〈2 stone） in 59 cases,B group （2-3 cm 41 cases calculi）,group C （stone〉3cm） in 20 cases,comparison of different size of kidney stones in patients with a period of stone clearance rate, operation time and complications. Results With the increase of stones, prolonged operation time, operation time of up to C group （ 172.66 ± 13.21） min;C group for a period of stone clearance rate was 45%,significantly lower than those of A group 88.14%and 82.93%in the B group,the difference was statistically significant （χ2 =5.294,6.223,all P〈0.05）;group A and B group of stone clearance rate had no significant difference （ P 〉0.05 ）;C group, the complication rate was 25%,9.76%in B group,A group was 5.08%,A group,B group complications incidence was statistically significant difference （χ2 =4.048,P=0.034）,B group,C group complications had significant difference （χ2 =9.654,P=0.007）,A group,C group complications had significant difference （χ2 =11.421,P=0.002）.Conclusion Retro-grade intrarenal operation has a good stone clearance rate of diameter 〈3 cm stones,stones less than 2 cm of patients with postoperative complication rate is lowest,the effect is better. Key words: Renal calculus; Retrograde intrarenal operation; Flexible ureteroscope