RESUMO
Objective To evaluate the relationship between the early incidence of postoperative complications and renal pelvic pressure during minimally invasive percutaneous nephrolithotomy. Methods 133 renal calculi patients were monitored during MPCNL. Then the patients were separated into two groups according to the renal pelvic pressure,and the postoperative fever,the perirenal fluid and impairment of renal function were analyzed. Results The average body temperature was higher in high pelvic pressure group than that in low pelvic pressure group from the first day to the fourth day after operation(P<0. 05). The urinary protein of all patients raised obviously after the op-eration while it decreased gradually afterward. The urinary protein of the high pelvic pressure group was much higher than that of the low pel-vic pressure group in same day with a significant difference (P<0. 05). The incidence of perirenal fluid was much higher in high pelvic pres-sure group than that in low pelvic pressure group (P<0. 05). Conclusion The incidence of early postoperative complications was related to renal pelvic pressure during MPCNL.