Comparative study of microchannel percutaneous nephrolithotomy and flexible ureteroscope lithotripsy for renal calculi

Objectives To compare efficacy and complications of micro-channel percutaneous nephrolithotomy and flexible ureteroscope lithotripsy in the treatment of patients with renal calculi. Methods One hundred patients with renal calauli who underwent invalid extracorporeal shock wave lithotripsy were, divided into two groups of 51 patients underwent micro-channel percutaneous nephrolithotomy lithotripsy and 49 patients underwent combined flexible ureteroscope lithotripsy. The operation time, blood loss, intraoperative and postoperative complications, postoperative hospital stay and postoperative stone clearance rate were compared between the two groups. Results Operation time of the micro channel by percutaneous renal lens group was (53.5 ±19.6) min, blood loss was (75.0 ± 18.5) mL, postoperative hospital stay was (8.0 ± 1.5) d. The total complication rate was 80.4%, the total stone clearance rate was 92.16%(47/51). The operation time, blood loss and postoperative hospital stay in ureteral soft mirror group was (49 ± 25.6) min, (15.2 ± 2.9) mL, (4.5 ± 0.6) d, respectively, There were postoperative pain in 6 cases, antibiotic therapy in 10 cases of infection, 1 case of blood transfusion, perirenal hematoma in 1 case, complication rate was 30.6%, the total stone clearance rate was 65.31%(32/49). Conclusions There was no significant difference in operation time. Intraoperative bleeding volume, postoperative hospitalization time, postoperative complication rate, total stone clearance rate of micro channel by percutaneous renal mirror group were higher than that of modular flexible ureteroscope group. The packet layer found that stone clearance rate of combined ureter soft lens group was better than that of microchannel percutaneous nephrolithotomy group in multiple locations and complicated stone. Key words: Key words Kidney Calculi; Ureteroscopes; Nephrostomy, Percutaneous